initial buildroot for linux 5.15

toolchain/Config.in

@@ -0,0 +1,831 @@
+menu "Toolchain"
+
+# Invisible option that makes sure the toolchain package always gets
+# built
+config BR2_TOOLCHAIN
+	bool
+	default y
+
+# Should be selected for glibc or eglibc
+config BR2_TOOLCHAIN_USES_GLIBC
+	bool
+	select BR2_USE_WCHAR
+	select BR2_ENABLE_LOCALE
+	select BR2_TOOLCHAIN_HAS_FULL_GETTEXT
+	select BR2_TOOLCHAIN_HAS_THREADS
+	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
+	select BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	select BR2_TOOLCHAIN_HAS_UCONTEXT
+	select BR2_TOOLCHAIN_SUPPORTS_PIE
+
+config BR2_TOOLCHAIN_USES_UCLIBC
+	bool
+	# ucontext is only available for a subset of the supported
+	# architectures
+	select BR2_TOOLCHAIN_HAS_UCONTEXT if BR2_ARM_CPU_HAS_ARM || BR2_i386 \
+		|| BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el \
+		|| BR2_sparc || BR2_x86_64
+	select BR2_TOOLCHAIN_SUPPORTS_PIE if !BR2_m68k && !BR2_microblaze && !BR2_STATIC_LIBS
+
+config BR2_TOOLCHAIN_USES_MUSL
+	bool
+	select BR2_USE_WCHAR
+	select BR2_ENABLE_LOCALE
+	select BR2_TOOLCHAIN_HAS_THREADS
+	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
+	select BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	select BR2_TOOLCHAIN_HAS_UCONTEXT
+	select BR2_TOOLCHAIN_SUPPORTS_PIE if !BR2_STATIC_LIBS
+
+choice
+	prompt "Toolchain type"
+	help
+	  Select whether to use the toolchain provided by buildroot
+	  or an external toolchain.
+
+	  Some vendors provide toolchains in binary form, some in
+	  source form.
+
+config BR2_TOOLCHAIN_BUILDROOT
+	bool "Buildroot toolchain"
+	depends on BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT
+
+config BR2_TOOLCHAIN_EXTERNAL
+	bool "External toolchain"
+	help
+	  Select if you want to use an existing cross-compiling
+	  toolchain. Buildroot can either download automatically a
+	  toolchain, or use an already installed toolchain.
+
+endchoice
+
+source "toolchain/toolchain-buildroot/Config.in"
+source "toolchain/toolchain-external/Config.in"
+
+# Generic toolchain options
+
+# we want gdb config in the middle of both source and external
+# toolchains, but mconf won't let us source the same file twice,
+# so put it here instead
+source "package/gdb/Config.in.host"
+
+comment "Toolchain Generic Options"
+
+# https://sourceware.org/bugzilla/show_bug.cgi?id=21464
+# Affect toolchains built with binutils 2.31.1, still not fixed.
+config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464
+	bool
+	default y if BR2_or1k
+
+# https://sourceware.org/bugzilla/show_bug.cgi?id=27597
+# Affect toolchains built with binutils 2.36.1, still not fixed.
+config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597
+	bool
+	default y if BR2_nios2
+
+# Atomic types can be:
+#  - never lock-free
+#  - sometimes lock-free
+#  - always lock-free
+# see https://en.cppreference.com/w/c/atomic/ATOMIC_LOCK_FREE_consts
+#
+# On most architectures, gcc provides "always lock-free" atomic types,
+# but a few architectures are limited to "sometimes lock-free"
+# types. This hidden option allows to know if the architecture
+# provides "always lock-free" atomic types.
+config BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
+	bool
+	default y
+	depends on !BR2_nios2
+	depends on !BR2_ARM_CPU_ARMV4
+	depends on !BR2_ARM_CPU_ARMV5
+	depends on !BR2_sparc_v8
+	depends on !BR2_m68k_cf5208
+
+# GCC uses thunk functions to adjust the 'this' pointer when calling
+# C++ member functions in classes derived with multiple inheritance.
+# Generation of thunk functions requires support from the compiler
+# back end. In the absence of that support target-independent code
+# in the C++ front end is used to generate thunk functions, but it
+# does not support vararg functions.
+# or1k will support it in the gcc mainline starting with gcc-9.
+config BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK
+	bool
+	default y
+	depends on !BR2_or1k
+	depends on !BR2_xtensa
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43744. This bug no
+# reappeared on gcc 9.x and is still not fixed on gcc 11.x
+config BR2_TOOLCHAIN_HAS_GCC_BUG_43744
+	bool
+	default y if BR2_sh4
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8 || \
+		BR2_TOOLCHAIN_GCC_AT_LEAST_9 || \
+		BR2_TOOLCHAIN_GCC_AT_LEAST_10 || \
+		BR2_TOOLCHAIN_GCC_AT_LEAST_11
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63261. This bug no
+# longer exists in gcc 8.x.
+config BR2_TOOLCHAIN_HAS_GCC_BUG_63261
+	bool
+	default y if BR2_microblaze
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8
+
+# Prior to gcc 7.x, exception_ptr, nested_exception and future from
+# libstdc++ would only be provided on architectures that support
+# always lock-free atomic ints. See
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735. This issue has
+# been removed in GCC 7.x, where exception propagation is now
+# supported without lock-free atomic int.
+config BR2_TOOLCHAIN_HAS_GCC_BUG_64735
+	bool
+	default y if !BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS && \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_7
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68485. This bug still
+# exists in gcc 9.x
+config BR2_TOOLCHAIN_HAS_GCC_BUG_68485
+	bool
+	default y if BR2_microblaze
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83143
+# Error: invalid operands (*UND* and .text sections) for `-' on sh4.
+# This bug no longer exists in gcc 10.x but reappeared on gcc 11.x and
+# it still not been fixed yet.
+config BR2_TOOLCHAIN_HAS_GCC_BUG_83143
+	bool
+	default y if BR2_sh
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_10 || BR2_TOOLCHAIN_GCC_AT_LEAST_11
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85180. This bug no
+# longer exists in gcc 8.x.
+config BR2_TOOLCHAIN_HAS_GCC_BUG_85180
+	bool
+	default y if BR2_microblaze
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85862
+# An infinite loop exists in the find_base_term() logic of 6.x
+# on microblaze.  http://autobuild.buildroot.net/results/158e8ebb39713e1b436a5cc1a1916f46c30694df/
+config BR2_TOOLCHAIN_HAS_GCC_BUG_85862
+	bool
+	default y if BR2_microblaze
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_7
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90620
+# ICE: in do_output_reload, at reload1.c:7978 on microblaze.
+# This bug no longer exists in gcc 10.x
+config BR2_TOOLCHAIN_HAS_GCC_BUG_90620
+	bool
+	default y if BR2_microblaze
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_10
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93847
+# ICE: compiler error: Segmentation fault on Nios II. This bug
+# no longer exists in gcc 9.x.
+config BR2_TOOLCHAIN_HAS_GCC_BUG_93847
+	bool
+	default y if BR2_nios2 && !BR2_TOOLCHAIN_GCC_AT_LEAST_9
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99410
+# Error: branch offset out of range on Nios II. This bug
+# no longer exists in gcc 8.x but reappeared on gcc 9.x and has been
+# fixed on gcc 10.x.
+config BR2_TOOLCHAIN_HAS_GCC_BUG_99140
+	bool
+	default y if !BR2_TOOLCHAIN_GCC_AT_LEAST_8
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_9 && !BR2_TOOLCHAIN_GCC_AT_LEAST_10
+	depends on BR2_nios2
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101737
+# ICE: SH4 -Os causes internal compiler error. This bug
+# still exists in gcc = 11.1.0
+config BR2_TOOLCHAIN_HAS_GCC_BUG_101737
+	bool
+	default y if BR2_sh4
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101915
+# ICE: in extract_insn, at recog.c:2294 on microblaze.
+# This bug still exists in gcc = 11.1.0
+config BR2_TOOLCHAIN_HAS_GCC_BUG_101915
+	bool
+	default y if BR2_microblaze
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101916
+# ICE: on SH4: Segmentation fault signal terminated program cc1.
+# This bug still exists in gcc = 11.1.0
+config BR2_TOOLCHAIN_HAS_GCC_BUG_101916
+	bool
+	default y if BR2_sh4
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101952
+# ICE: on SH4: unaligned opcodes detected in executable segment.
+# This bug still exists in gcc = 11.1.0
+config BR2_TOOLCHAIN_HAS_GCC_BUG_101952
+	bool
+	default y if BR2_sh4
+
+config BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	bool
+
+config BR2_USE_WCHAR
+	bool
+
+config BR2_ENABLE_LOCALE
+	bool
+
+config BR2_INSTALL_LIBSTDCPP
+	bool
+
+config BR2_TOOLCHAIN_HAS_DLANG
+	bool
+
+config BR2_TOOLCHAIN_HAS_FORTRAN
+	bool
+
+config BR2_TOOLCHAIN_HAS_THREADS
+	bool
+
+config BR2_TOOLCHAIN_HAS_THREADS_DEBUG
+	bool
+
+config BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	bool
+
+config BR2_TOOLCHAIN_HAS_SSP
+	bool
+
+config BR2_TOOLCHAIN_HAS_SSP_STRONG
+	bool
+	default y if BR2_TOOLCHAIN_HAS_SSP && BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+
+config BR2_TOOLCHAIN_HAS_UCONTEXT
+	bool
+
+config BR2_TOOLCHAIN_HAS_OPENMP
+	bool
+
+config BR2_TOOLCHAIN_SUPPORTS_PIE
+	bool
+
+config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
+	bool "Copy gconv libraries"
+	depends on BR2_TOOLCHAIN_USES_GLIBC
+	help
+	  The gconv libraries are used to convert between different
+	  character sets (charsets).
+
+	  Say 'y' if you need to store and/or display different
+	  charsets.
+
+config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST
+	string "Gconv libraries to copy"
+	depends on BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
+	help
+	  Set to the list of gconv libraries to copy.
+	  Leave empty to copy all gconv libraries.
+
+	  Specify only the basename of the libraries, leave
+	  out the .so extension. Eg.:
+	    IBM850 ISO8859-15 UNICODE
+
+	  Note: the full set of gconv libs are ~8MiB (on ARM).
+
+config BR2_TOOLCHAIN_EXTRA_LIBS
+	string "Extra toolchain libraries to be copied to target"
+	default BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS if BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS != "" # legacy
+	depends on !BR2_STATIC_LIBS
+	help
+	  If your toolchain provides extra libraries that need to be
+	  copied to the target filesystem, enter them here, separated
+	  by spaces. The library should not include a suffix or any
+	  type of pre/post wildcard.
+
+	  Examples where this can be useful is for adding debug
+	  libraries to the target like the GCC libsanitizer.
+	  e.g. "libasan liblsan libtsan libubsan"
+
+# This boolean is true if the toolchain provides a built-in full
+# featured gettext implementation (glibc), and false if only a stub
+# gettext implementation is provided (uclibc, musl)
+config BR2_TOOLCHAIN_HAS_FULL_GETTEXT
+	bool
+
+config BR2_USE_MMU
+	bool "Enable MMU support" if BR2_ARCH_HAS_MMU_OPTIONAL
+	default y if BR2_ARCH_HAS_MMU_OPTIONAL || BR2_ARCH_HAS_MMU_MANDATORY
+	help
+	  If your target has a MMU, you should say Y here.  If you
+	  are unsure, just say Y.
+
+config BR2_TARGET_OPTIMIZATION
+	string "Target Optimizations"
+	default ""
+	help
+	  Optimizations to use when building for the target host.
+	  NOTE: gcc optimization level is defined in build options.
+
+config BR2_TARGET_LDFLAGS
+	string "Target linker options"
+	help
+	  Extra options to pass to the linker when building for the
+	  target.
+
+	  Note that options with a '$' sign (eg.
+	  -Wl,-rpath='$ORIGIN/../lib') are not supported.
+
+config BR2_ECLIPSE_REGISTER
+	bool "Register toolchain within Eclipse Buildroot plug-in"
+	help
+	  This options tells Buildroot to generate the necessary
+	  configuration files to make your toolchain appear within
+	  Eclipse, through the Eclipse Buildroot plugin.
+
+# Options for packages to depend on, if they require at least a
+# specific version of the kernel headers.
+# Toolchains should choose the adequate option (ie. the highest
+# version, not all of them).
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
+	bool
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_8
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_9
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_8
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_9
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_11
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_12
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_11
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_13
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_12
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_14
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_13
+
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_15
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_14
+	select BR2_TOOLCHAIN_HEADERS_LATEST
+
+# This should be selected by the latest version, above, to indicate that
+# Buildroot does not know of more recent headers than the ones selected.
+# This allows using toolchains with headers more recent than Buildroot
+# knows about, while still enforcing strict check for older headers.
+config BR2_TOOLCHAIN_HEADERS_LATEST
+	bool
+
+# This order guarantees that the highest version is set, as kconfig
+# stops affecting a value on the first matching default.
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST
+	string
+	default "5.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_15
+	default "5.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_14
+	default "5.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_13
+	default "5.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_12
+	default "5.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_11
+	default "5.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10
+	default "5.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_9
+	default "5.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_8
+	default "5.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
+	default "5.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
+	default "5.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
+	default "5.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
+	default "5.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
+	default "5.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
+	default "5.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
+	default "5.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
+	default "4.20" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+	default "4.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
+	default "4.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
+	default "4.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
+	default "4.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
+	default "4.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
+	default "4.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
+	default "4.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
+	default "4.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
+	default "4.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
+	default "4.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
+	default "4.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
+	default "4.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
+	default "4.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
+	default "4.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
+	default "4.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
+	default "4.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
+	default "4.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
+	default "4.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
+	default "4.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
+	default "4.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
+	default "3.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
+	default "3.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
+	default "3.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
+	default "3.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
+	default "3.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
+	default "3.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
+	default "3.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
+	default "3.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
+	default "3.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
+	default "3.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
+	default "3.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
+	default "3.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
+	default "3.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
+	default "3.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
+	default "3.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
+	default "3.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
+	default "3.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
+	default "3.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
+	default "3.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
+	default "3.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
+	default "2.6"
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
+	bool
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_5
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_6
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_7
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_6
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_8
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_7
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_9
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_8
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_10
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_9
+
+config BR2_TOOLCHAIN_GCC_AT_LEAST_11
+	bool
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_10
+
+# This order guarantees that the highest version is set, as kconfig
+# stops affecting a value on the first matching default.
+config BR2_TOOLCHAIN_GCC_AT_LEAST
+	string
+	default "11"	if BR2_TOOLCHAIN_GCC_AT_LEAST_11
+	default "10"	if BR2_TOOLCHAIN_GCC_AT_LEAST_10
+	default "9"	if BR2_TOOLCHAIN_GCC_AT_LEAST_9
+	default "8"	if BR2_TOOLCHAIN_GCC_AT_LEAST_8
+	default "7"	if BR2_TOOLCHAIN_GCC_AT_LEAST_7
+	default "6"	if BR2_TOOLCHAIN_GCC_AT_LEAST_6
+	default "5"	if BR2_TOOLCHAIN_GCC_AT_LEAST_5
+	default "4.9"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+	default "4.8"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+	default "4.7"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
+	default "4.6"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
+	default "4.5"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
+	default "4.4"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
+	default "4.3"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
+
+config BR2_TOOLCHAIN_HAS_MNAN_OPTION
+	bool
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+
+config BR2_TOOLCHAIN_HAS_SYNC_1
+	bool
+	default y
+	depends on !BR2_m68k_cf
+	depends on !BR2_microblaze
+	depends on !BR2_sparc
+	depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
+
+config BR2_TOOLCHAIN_HAS_SYNC_2
+	bool
+	default y if BR2_TOOLCHAIN_HAS_SYNC_1
+
+config BR2_TOOLCHAIN_HAS_SYNC_4
+	bool
+	default y
+	depends on !BR2_m68k_cf
+	depends on !BR2_sparc
+	depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
+
+# The availability of __sync for 8-byte types on ARM is somewhat
+# complicated:
+#
+#  - It appeared in gcc starting with gcc 4.7.
+#
+#  - On ARMv7, there is no problem, it can be directly implemented in
+#    userspace.
+#
+#  - On < ARMv7, it requires help from the kernel. Unfortunately, the
+#    libgcc code implementing 8-byte __sync with the help from the
+#    kernel calls __write() when a failure occurs, which is a function
+#    internal to glibc, not available in uClibc and musl. This means
+#    that the 8-byte __sync operations are not available on < ARMv7
+#    with uClibc and musl. This problem was fixed as part of gcc
+#    PR68059, which was backported to the gcc 5 branch, but isn't yet
+#    part of any gcc 5.x release.
+#
+config BR2_TOOLCHAIN_ARM_HAS_SYNC_8
+	bool
+	default y
+	depends on BR2_arm || BR2_armeb
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
+	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_ARM_CPU_ARMV7A
+
+# 8-byte intrinsics available on most x86 CPUs, except a few old ones
+config BR2_TOOLCHAIN_X86_HAS_SYNC_8
+	bool
+	default y
+	depends on BR2_i386
+	depends on !BR2_x86_i486
+	depends on !BR2_x86_c3
+	depends on !BR2_x86_winchip_c6
+	depends on !BR2_x86_winchip2
+
+# 8-byte intrinsics available:
+#  - On all 64 bits architecture
+#  - On a certain combinations of ARM platforms
+#  - On certain x86 32 bits CPUs
+config BR2_TOOLCHAIN_HAS_SYNC_8
+	bool
+	default y if BR2_ARCH_IS_64
+	default y if BR2_TOOLCHAIN_ARM_HAS_SYNC_8
+	default y if BR2_TOOLCHAIN_X86_HAS_SYNC_8
+
+# libatomic is available since gcc 4.8, when thread support is
+# enabled. Also, libatomic doesn't recognize "uclinux" as a valid OS
+# part of the tuple, and is therefore not build on uclinux targets,
+# which is why BR2_BINFMT_FLAT configurations are excluded.
+config BR2_TOOLCHAIN_HAS_LIBATOMIC
+	bool
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 && \
+		!BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64 && \
+		BR2_TOOLCHAIN_HAS_THREADS && \
+		!BR2_BINFMT_FLAT
+
+# __atomic intrinsics are available:
+# - with gcc 4.8, either through built-ins or libatomic, on all
+#   architectures. Since we don't want to separate the cases where
+#   libatomic is needed vs. not needed, we simplify thing and only
+#   support situations where libatomic is available, even if on some
+#   architectures libatomic is not strictly needed as all __atomic
+#   intrinsics might be built-in. The only case where libatomic is
+#   missing entirely is when the toolchain does not have support for
+#   threads. However, a package that does not need threads but still
+#   uses atomics is quite a corner case, which does not warrant the
+#   added complexity.
+# - with gcc 4.7, libatomic did not exist, so only built-ins are
+#   available. This means that __atomic can only be used in a subset
+#   of the architectures
+config BR2_TOOLCHAIN_HAS_ATOMIC
+	bool
+	default y if BR2_TOOLCHAIN_HAS_LIBATOMIC
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_arm
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_armeb
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_xtensa
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_ARCH_IS_64
+
+# - libquadmath is not needed/available on all architectures (but gcc
+#   correctly handles this already).
+# - At least, libquadmath is available on:
+#   - i*86
+#   - x86_64
+# - When available, libquadmath requires wchar support.
+config BR2_TOOLCHAIN_HAS_LIBQUADMATH
+	bool
+	default y if BR2_i386 || BR2_x86_64
+
+endmenu

toolchain/helpers.mk

@@ -0,0 +1,531 @@
+# This Makefile fragment declares toolchain related helper functions.
+
+# The copy_toolchain_lib_root function copies a toolchain library and
+# its symbolic links from the sysroot directory to the target
+# directory. Note that this function is used both by the external
+# toolchain logic, and the glibc package, so care must be taken when
+# changing this function.
+#
+# $1: library name pattern (can include glob wildcards)
+#
+copy_toolchain_lib_root = \
+	LIBPATTERN="$(strip $1)"; \
+	LIBPATHS=`find $(STAGING_DIR)/ -name "$${LIBPATTERN}" 2>/dev/null` ; \
+	for LIBPATH in $${LIBPATHS} ; do \
+		while true ; do \
+			LIBNAME=`basename $${LIBPATH}`; \
+			DESTDIR=`echo $${LIBPATH} | sed "s,^$(STAGING_DIR)/,," | xargs dirname` ; \
+			mkdir -p $(TARGET_DIR)/$${DESTDIR}; \
+			rm -fr $(TARGET_DIR)/$${DESTDIR}/$${LIBNAME}; \
+			if test -h $${LIBPATH} ; then \
+				cp -d $${LIBPATH} $(TARGET_DIR)/$${DESTDIR}/$${LIBNAME}; \
+				LIBPATH="`readlink -f $${LIBPATH}`"; \
+			elif test -f $${LIBPATH}; then \
+				$(INSTALL) -D -m0755 $${LIBPATH} $(TARGET_DIR)/$${DESTDIR}/$${LIBNAME}; \
+				break ; \
+			else \
+				exit -1; \
+			fi; \
+		done; \
+	done
+
+#
+# Copy the full external toolchain sysroot directory to the staging
+# dir. The operation of this function is rendered a little bit
+# complicated by the support for multilib toolchains.
+#
+# We start by copying etc, 'lib', sbin, usr and usr/'lib' from the
+# sysroot of the selected architecture variant (as pointed to by
+# ARCH_SYSROOT_DIR). This allows to import into the staging directory
+# the C library and companion libraries for the correct architecture
+# variant. 'lib' may not be literally 'lib' but could be something else,
+# e.g. lib32-fp (as determined by ARCH_LIB_DIR) and we only want to copy
+# that lib directory and no other. When copying usr, we therefore need
+# to be extra careful not to include usr/lib* but we _do_ want to
+# include usr/libexec.
+# We are selective in the directories we copy since other directories
+# might exist for other architecture variants (on Codesourcery
+# toolchain, the sysroot for the default architecture variant contains
+# the armv4t and thumb2 subdirectories, which are the sysroot for the
+# corresponding architecture variants), and we don't want to import
+# them.
+#
+# If ARCH_LIB_DIR is not a singular directory component, e.g.
+# 'lib32/octeon2', then symbolic links in ARCH_LIB_DIR and
+# usr/ARCH_LIB_DIR may be broken because Buildroot will flatten the
+# directory structure (e.g. lib32/octeon2/foo is actually stored in
+# lib/foo). This is only relevant for links that contain one or more ../
+# components, as links to the current directory are always fine.
+# We need to fix the broken links by removing the right amount of ../
+# dots from the link destination.
+# Once the link destination is valid again, it can be simplified to
+# remove the dependency on intermediate directory symlinks.
+#
+# It is possible that ARCH_LIB_DIR does not contain the dynamic loader
+# (ld*.so or similar) because it (or the main symlink to it) normally
+# resides in /lib while ARCH_LIB_DIR may be something else (e.g. lib64,
+# lib/<tuple>, ...). Therefore, copy the dynamic loader separately.
+#
+# Then, if the selected architecture variant is not the default one
+# (i.e, if SYSROOT_DIR != ARCH_SYSROOT_DIR), then we :
+#
+#  * Import the header files from the default architecture
+#    variant. Header files are typically shared between the sysroots
+#    for the different architecture variants. If we use the
+#    non-default one, header files were not copied by the previous
+#    step, so we copy them here from the sysroot of the default
+#    architecture variant.
+#
+#  * Create a symbolic link that matches the name of the subdirectory
+#    for the architecture variant in the original sysroot. This is
+#    required as the compiler will by default look in
+#    sysroot_dir/arch_variant/ for libraries and headers, when the
+#    non-default architecture variant is used. Without this, the
+#    compiler fails to find libraries and headers.
+#
+# Some toolchains (i.e Linaro binary toolchains) store support
+# libraries (libstdc++, libgcc_s) outside of the sysroot, so we simply
+# copy all the libraries from the "support lib directory" into our
+# sysroot.
+#
+# Note that the 'locale' directories are not copied. They are huge
+# (400+MB) in CodeSourcery toolchains, and they are not really useful.
+#
+# $1: main sysroot directory of the toolchain
+# $2: arch specific sysroot directory of the toolchain
+# $3: arch specific subdirectory in the sysroot
+# $4: directory of libraries ('lib', 'lib32' or 'lib64')
+# $5: support lib directories (for toolchains storing libgcc_s,
+#     libstdc++ and other gcc support libraries outside of the
+#     sysroot)
+copy_toolchain_sysroot = \
+	SYSROOT_DIR="$(strip $1)"; \
+	ARCH_SYSROOT_DIR="$(strip $2)"; \
+	ARCH_SUBDIR="$(strip $3)"; \
+	ARCH_LIB_DIR="$(strip $4)" ; \
+	SUPPORT_LIB_DIR="$(strip $5)" ; \
+	for i in etc $${ARCH_LIB_DIR} sbin usr usr/$${ARCH_LIB_DIR}; do \
+		if [ ! -d $${ARCH_SYSROOT_DIR}/$$i ] ; then \
+			continue ; \
+		fi ; \
+		if [ "$$i" = "usr" ]; then \
+			rsync -au --chmod=u=rwX,go=rX --exclude 'locale/' \
+				--include '/libexec*/' --exclude '/lib*/' \
+				$${ARCH_SYSROOT_DIR}/$$i/ $(STAGING_DIR)/$$i/ ; \
+		else \
+			rsync -au --chmod=u=rwX,go=rX --exclude 'locale/' \
+				$${ARCH_SYSROOT_DIR}/$$i/ $(STAGING_DIR)/$$i/ ; \
+		fi ; \
+	done ; \
+	for link in $$(find $(STAGING_DIR) -type l); do \
+		target=$$(readlink $${link}) ; \
+		if [ "$${target}" == "$${target$(SHARP_SIGN)/}" ] ; then \
+			continue ; \
+		fi ; \
+		relpath="$(call relpath_prefix,$${target$(SHARP_SIGN)/})" ; \
+		echo "Fixing symlink $${link} from $${target} to $${relpath}$${target$(SHARP_SIGN)/}" ; \
+		ln -sf $${relpath}$${target$(SHARP_SIGN)/} $${link} ; \
+	done ; \
+	relpath="$(call relpath_prefix,$${ARCH_LIB_DIR})" ; \
+	if [ "$${relpath}" != "" ]; then \
+		for i in $$(find -H $(STAGING_DIR)/$${ARCH_LIB_DIR} $(STAGING_DIR)/usr/$${ARCH_LIB_DIR} -type l -xtype l); do \
+			LINKTARGET=`readlink $$i` ; \
+			NEWLINKTARGET=$${LINKTARGET\#$$relpath} ; \
+			ln -sf $${NEWLINKTARGET} $$i ; \
+			$(call simplify_symlink,$$i,$(STAGING_DIR)) ; \
+		done ; \
+	fi ; \
+	if [[ ! $$(find $(STAGING_DIR)/lib -name 'ld*.so.*' -print -quit) ]]; then \
+		find $${ARCH_SYSROOT_DIR}/lib -name 'ld*.so.*' -print0 | xargs -0 -I % cp % $(STAGING_DIR)/lib/; \
+	fi ; \
+	if [ `readlink -f $${SYSROOT_DIR}` != `readlink -f $${ARCH_SYSROOT_DIR}` ] ; then \
+		if [ ! -d $${ARCH_SYSROOT_DIR}/usr/include ] ; then \
+			cp -a $${SYSROOT_DIR}/usr/include $(STAGING_DIR)/usr ; \
+		fi ; \
+		mkdir -p `dirname $(STAGING_DIR)/$${ARCH_SUBDIR}` ; \
+		relpath="$(call relpath_prefix,$${ARCH_SUBDIR})./" ; \
+		ln -s $${relpath} $(STAGING_DIR)/$${ARCH_SUBDIR} ; \
+		echo "Symlinking $(STAGING_DIR)/$${ARCH_SUBDIR} -> $${relpath}" ; \
+	fi ; \
+	if test -n "$${SUPPORT_LIB_DIR}" ; then \
+		cp -a $${SUPPORT_LIB_DIR}/* $(STAGING_DIR)/lib/ ; \
+	fi ; \
+	find $(STAGING_DIR) -type d | xargs chmod 755
+
+#
+# Check the specified kernel headers version actually matches the
+# version in the toolchain.
+#
+# $1: build directory
+# $2: sysroot directory
+# $3: kernel version string, in the form: X.Y
+# $4: test to do for the latest kernel version, 'strict' or 'loose'
+#     always 'strict' if this is not the latest version.
+#
+check_kernel_headers_version = \
+	if ! support/scripts/check-kernel-headers.sh $(1) $(2) $(3) \
+		$(if $(BR2_TOOLCHAIN_HEADERS_LATEST),$(4),strict); \
+	then \
+		exit 1; \
+	fi
+
+#
+# Check the specific gcc version actually matches the version in the
+# toolchain
+#
+# $1: path to gcc
+# $2: expected gcc version
+#
+check_gcc_version = \
+	expected_version="$(strip $2)" ; \
+	if [ -z "$${expected_version}" ]; then \
+		exit 0 ; \
+	fi; \
+	real_version=`$(1) -dumpversion` ; \
+	if [[ ! "$${real_version}." =~ ^$${expected_version}\. ]] ; then \
+		printf "Incorrect selection of gcc version: expected %s.x, got %s\n" \
+			"$${expected_version}" "$${real_version}" ; \
+		exit 1 ; \
+	fi
+
+#
+# Check the availability of a particular glibc feature. This function
+# is used to check toolchain options that are always supported by
+# glibc, so we simply check that the corresponding option is properly
+# enabled.
+#
+# $1: Buildroot option name
+# $2: feature description
+#
+check_glibc_feature = \
+	if [ "$($(1))" != "y" ] ; then \
+		echo "$(2) available in C library, please enable $(1)" ; \
+		exit 1 ; \
+	fi
+
+#
+# Check the availability of RPC support in a glibc toolchain
+#
+# $1: sysroot directory
+#
+check_glibc_rpc_feature = \
+	IS_IN_LIBC=`test -f $(1)/usr/include/rpc/rpc.h && echo y` ; \
+	if [ "$(BR2_TOOLCHAIN_HAS_NATIVE_RPC)" != "y" -a "$${IS_IN_LIBC}" = "y" ] ; then \
+		echo "RPC support available in C library, please enable BR2_TOOLCHAIN_EXTERNAL_INET_RPC" ; \
+		exit 1 ; \
+	fi ; \
+	if [ "$(BR2_TOOLCHAIN_HAS_NATIVE_RPC)" = "y" -a "$${IS_IN_LIBC}" != "y" ] ; then \
+		echo "RPC support not available in C library, please disable BR2_TOOLCHAIN_EXTERNAL_INET_RPC" ; \
+		exit 1 ; \
+	fi
+
+#
+# Check the correctness of a glibc external toolchain configuration.
+#  1. Check that the C library selected in Buildroot matches the one
+#     of the external toolchain
+#  2. Check that all the C library-related features are enabled in the
+#     config, since glibc always supports all of them
+#
+# $1: sysroot directory
+#
+check_glibc = \
+	SYSROOT_DIR="$(strip $1)"; \
+	if test `find -L $${SYSROOT_DIR}/ -maxdepth 2 -name 'ld-linux*.so.*' -o -name 'ld.so.*' -o -name 'ld64.so.*' | wc -l` -eq 0 ; then \
+		echo "Incorrect selection of the C library"; \
+		exit -1; \
+	fi; \
+	$(call check_glibc_feature,BR2_USE_MMU,MMU support) ;\
+	$(call check_glibc_rpc_feature,$${SYSROOT_DIR})
+
+#
+# Check that the selected C library really is musl
+#
+# $1: cross-gcc path
+# $2: cross-readelf path
+check_musl = \
+	__CROSS_CC=$(strip $1) ; \
+	libc_a_path=`$${__CROSS_CC} -print-file-name=libc.a` ; \
+	if ! strings $${libc_a_path} | grep -q MUSL_LOCPATH ; then \
+		echo "Incorrect selection of the C library" ; \
+		exit -1; \
+	fi
+
+#
+# Check the conformity of Buildroot configuration with regard to the
+# uClibc configuration of the external toolchain, for a particular
+# feature.
+#
+# If 'Buildroot option name' ($2) is empty it means the uClibc option
+# is mandatory.
+#
+# $1: uClibc macro name
+# $2: Buildroot option name
+# $3: uClibc config file
+# $4: feature description
+#
+check_uclibc_feature = \
+	IS_IN_LIBC=`grep -q "\#define $(1) 1" $(3) && echo y` ; \
+	if [ -z "$(2)" ] ; then \
+		if [ "$${IS_IN_LIBC}" != "y" ] ; then \
+			echo "$(4) not available in C library, toolchain unsuitable for Buildroot" ; \
+			exit 1 ; \
+		fi ; \
+	else \
+		if [ "$($(2))" != "y" -a "$${IS_IN_LIBC}" = "y" ] ; then \
+			echo "$(4) available in C library, please enable $(2)" ; \
+			exit 1 ; \
+		fi ; \
+		if [ "$($(2))" = "y" -a "$${IS_IN_LIBC}" != "y" ] ; then \
+			echo "$(4) not available in C library, please disable $(2)" ; \
+			exit 1 ; \
+		fi ; \
+	fi
+
+#
+# Check the correctness of a uclibc external toolchain configuration
+#  1. Check that the C library selected in Buildroot matches the one
+#     of the external toolchain
+#  2. Check that the features enabled in the Buildroot configuration
+#     match the features available in the uClibc of the external
+#     toolchain
+#
+# $1: sysroot directory
+#
+check_uclibc = \
+	SYSROOT_DIR="$(strip $1)"; \
+	if ! test -f $${SYSROOT_DIR}/usr/include/bits/uClibc_config.h ; then \
+		echo "Incorrect selection of the C library"; \
+		exit -1; \
+	fi; \
+	UCLIBC_CONFIG_FILE=$${SYSROOT_DIR}/usr/include/bits/uClibc_config.h ; \
+	$(call check_uclibc_feature,__ARCH_USE_MMU__,BR2_USE_MMU,$${UCLIBC_CONFIG_FILE},MMU support) ;\
+	$(call check_uclibc_feature,__UCLIBC_HAS_LFS__,,$${UCLIBC_CONFIG_FILE},Large file support) ;\
+	$(call check_uclibc_feature,__UCLIBC_HAS_IPV6__,,$${UCLIBC_CONFIG_FILE},IPv6 support) ;\
+	$(call check_uclibc_feature,__UCLIBC_HAS_RPC__,BR2_TOOLCHAIN_HAS_NATIVE_RPC,$${UCLIBC_CONFIG_FILE},RPC support) ;\
+	$(call check_uclibc_feature,__UCLIBC_HAS_LOCALE__,BR2_ENABLE_LOCALE,$${UCLIBC_CONFIG_FILE},Locale support) ;\
+	$(call check_uclibc_feature,__UCLIBC_HAS_WCHAR__,BR2_USE_WCHAR,$${UCLIBC_CONFIG_FILE},Wide char support) ;\
+	$(call check_uclibc_feature,__UCLIBC_HAS_THREADS__,BR2_TOOLCHAIN_HAS_THREADS,$${UCLIBC_CONFIG_FILE},Thread support) ;\
+	$(call check_uclibc_feature,__PTHREADS_DEBUG_SUPPORT__,BR2_TOOLCHAIN_HAS_THREADS_DEBUG,$${UCLIBC_CONFIG_FILE},Thread debugging support) ;\
+	$(call check_uclibc_feature,__UCLIBC_HAS_THREADS_NATIVE__,BR2_TOOLCHAIN_HAS_THREADS_NPTL,$${UCLIBC_CONFIG_FILE},NPTL thread support)
+
+#
+# Check that the Buildroot configuration of the ABI matches the
+# configuration of the external toolchain.
+#
+# $1: cross-gcc path
+# $2: cross-readelf path
+#
+check_arm_abi = \
+	__CROSS_CC=$(strip $1) ; \
+	EXT_TOOLCHAIN_TARGET=`LANG=C $${__CROSS_CC} -v 2>&1 | grep ^Target | cut -f2 -d ' '` ; \
+	if ! echo $${EXT_TOOLCHAIN_TARGET} | grep -qE 'eabi(hf)?$$' ; then \
+		echo "External toolchain uses the unsuported OABI" ; \
+		exit 1 ; \
+	fi ; \
+	if ! echo 'int main(void) {}' | $${__CROSS_CC} -x c -o $(BUILD_DIR)/.br-toolchain-test.tmp - ; then \
+		rm -f $(BUILD_DIR)/.br-toolchain-test.tmp*; \
+		abistr_$(BR2_ARM_EABI)='EABI'; \
+		abistr_$(BR2_ARM_EABIHF)='EABIhf'; \
+		echo "Incorrect ABI setting: $${abistr_y} selected, but toolchain is incompatible"; \
+		exit 1 ; \
+	fi ; \
+	rm -f $(BUILD_DIR)/.br-toolchain-test.tmp*
+
+#
+# Check that the external toolchain supports C++
+#
+# $1: cross-g++ path
+#
+check_cplusplus = \
+	__CROSS_CXX=$(strip $1) ; \
+	$${__CROSS_CXX} -v > /dev/null 2>&1 ; \
+	if test $$? -ne 0 ; then \
+		echo "C++ support is selected but is not available in external toolchain" ; \
+		exit 1 ; \
+	fi
+
+#
+#
+# Check that the external toolchain supports D language
+#
+# $1: cross-gdc path
+#
+check_dlang = \
+	__CROSS_GDC=$(strip $1) ; \
+	__o=$(BUILD_DIR)/.br-toolchain-test-dlang.tmp ; \
+	printf 'import std.stdio;\nvoid main() { writeln("Hello World!"); }\n' | \
+	$${__CROSS_GDC} -x d -o $${__o} - ; \
+	if test $$? -ne 0 ; then \
+		rm -f $${__o}* ; \
+		echo "D language support is selected but is not available in external toolchain" ; \
+		exit 1 ; \
+	fi ; \
+	rm -f $${__o}* \
+
+#
+#
+# Check that the external toolchain supports Fortran
+#
+# $1: cross-gfortran path
+#
+check_fortran = \
+	__CROSS_FC=$(strip $1) ; \
+	__o=$(BUILD_DIR)/.br-toolchain-test-fortran.tmp ; \
+	printf 'program hello\n\tprint *, "Hello Fortran!\\n"\nend program hello\n' | \
+	$${__CROSS_FC} -x f95 -o $${__o} - ; \
+	if test $$? -ne 0 ; then \
+		rm -f $${__o}* ; \
+		echo "Fortran support is selected but is not available in external toolchain" ; \
+		exit 1 ; \
+	fi ; \
+	rm -f $${__o}* \
+
+#
+#
+# Check that the external toolchain supports OpenMP
+#
+# $1: cross-gcc path
+#
+check_openmp = \
+	__CROSS_CC=$(strip $1) ; \
+	__o=$(BUILD_DIR)/.br-toolchain-test-openmp.tmp ; \
+	printf '\#include <omp.h>\nint main(void) { return omp_get_thread_num(); }' | \
+	$${__CROSS_CC} -fopenmp -x c -o $${__o} - ; \
+	if test $$? -ne 0 ; then \
+		rm -f $${__o}* ; \
+		echo "OpenMP support is selected but is not available in external toolchain"; \
+		exit 1 ; \
+	fi ; \
+	rm -f $${__o}* \
+
+#
+# Check that the cross-compiler given in the configuration exists
+#
+# $1: cross-gcc path
+#
+check_cross_compiler_exists = \
+	__CROSS_CC=$(strip $1) ; \
+	$${__CROSS_CC} -v > /dev/null 2>&1 ; \
+	if test $$? -ne 0 ; then \
+		echo "Cannot execute cross-compiler '$${__CROSS_CC}'" ; \
+		exit 1 ; \
+	fi
+
+#
+# Check for toolchains known not to work with Buildroot.
+# - For the Angstrom toolchains, we check by looking at the vendor part of
+#   the host tuple.
+# - Exclude distro-class toolchains which are not relocatable.
+# - Exclude broken toolchains which return "libc.a" with -print-file-name.
+# - Exclude toolchains which doesn't support --sysroot option.
+#
+# $1: cross-gcc path
+#
+check_unusable_toolchain = \
+	__CROSS_CC=$(strip $1) ; \
+	vendor=`$${__CROSS_CC} -dumpmachine | cut -f2 -d'-'` ; \
+	if test "$${vendor}" = "angstrom" ; then \
+		echo "Angstrom toolchains are not pure toolchains: they contain" ; \
+		echo "many other libraries than just the C library, which makes" ; \
+		echo "them unsuitable as external toolchains for build systems" ; \
+		echo "such as Buildroot." ; \
+		exit 1 ; \
+	fi; \
+	with_sysroot=`$${__CROSS_CC} -v 2>&1 |sed -r -e '/.* --with-sysroot=([^[:space:]]+)[[:space:]].*/!d; s//\1/'`; \
+	if test "$${with_sysroot}"  = "/" ; then \
+		echo "Distribution toolchains are unsuitable for use by Buildroot," ; \
+		echo "as they were configured in a way that makes them non-relocatable,"; \
+		echo "and contain a lot of pre-built libraries that would conflict with"; \
+		echo "the ones Buildroot wants to build."; \
+		exit 1; \
+	fi; \
+	libc_a_path=`$${__CROSS_CC} -print-file-name=libc.a` ; \
+	if test "$${libc_a_path}" = "libc.a" ; then \
+		echo "Unable to detect the toolchain sysroot, Buildroot cannot use this toolchain." ; \
+		exit 1 ; \
+	fi ; \
+	sysroot_dir="$(call toolchain_find_sysroot,$${__CROSS_CC})" ; \
+	if test -z "$${sysroot_dir}" ; then \
+		echo "External toolchain doesn't support --sysroot. Cannot use." ; \
+		exit 1 ; \
+	fi
+
+#
+# Check if the toolchain has SSP (stack smashing protector) support
+#
+# $1: cross-gcc path
+# $2: gcc ssp option
+#
+check_toolchain_ssp = \
+	__CROSS_CC=$(strip $1) ; \
+	__HAS_SSP=`echo 'void main(){}' | $${__CROSS_CC} -Werror -fstack-protector -x c - -o $(BUILD_DIR)/.br-toolchain-test.tmp >/dev/null 2>&1 && echo y` ; \
+	if [ "$(BR2_TOOLCHAIN_HAS_SSP)" != "y" -a "$${__HAS_SSP}" = "y" ] ; then \
+		echo "SSP support available in this toolchain, please enable BR2_TOOLCHAIN_EXTERNAL_HAS_SSP" ; \
+		exit 1 ; \
+	fi ; \
+	if [ "$(BR2_TOOLCHAIN_HAS_SSP)" = "y" -a "$${__HAS_SSP}" != "y" ] ; then \
+		echo "SSP support not available in this toolchain, please disable BR2_TOOLCHAIN_EXTERNAL_HAS_SSP" ; \
+		exit 1 ; \
+	fi ; \
+	__SSP_OPTION=$(2); \
+	if [ -n "$${__SSP_OPTION}" ] ; then \
+		if ! echo 'void main(){}' | $${__CROSS_CC} -Werror $${__SSP_OPTION} -x c - -o $(BUILD_DIR)/.br-toolchain-test.tmp >/dev/null 2>&1 ; then \
+			echo "SSP option $${__SSP_OPTION} not available in this toolchain, please select another SSP level" ; \
+			exit 1 ; \
+		fi; \
+	fi; \
+	rm -f $(BUILD_DIR)/.br-toolchain-test.tmp*
+
+#
+# Generate gdbinit file for use with Buildroot
+#
+gen_gdbinit_file = \
+	mkdir -p $(STAGING_DIR)/usr/share/buildroot/ ; \
+	echo "add-auto-load-safe-path $(STAGING_DIR)" > $(STAGING_DIR)/usr/share/buildroot/gdbinit ; \
+	echo "set sysroot $(STAGING_DIR)" >> $(STAGING_DIR)/usr/share/buildroot/gdbinit
+
+# Given a path, determine the relative prefix (../) needed to return to the
+# root level. Note that the last component is treated as a file component; use a
+# trailing slash to force treating it as a directory. Examples:
+#     relpath_prefix(lib32) = ""
+#     relpath_prefix(lib32/octeon2) = "../"
+#     relpath_prefix(lib32/octeon2/) = "../../"
+#
+# $1: input path
+define relpath_prefix
+$$( \
+	prefix="" ; \
+	nbslashs=`printf $1 | sed 's%[^/]%%g' | wc -c` ; \
+	for slash in `seq 1 $${nbslashs}` ; do \
+		prefix=$${prefix}"../" ; \
+	done ; \
+	printf "$$prefix" ; \
+)
+endef
+
+# Replace the destination of a symbolic link with a simpler version
+# For example,
+#     usr/lib/libfoo.so -> ../../lib32/libfoo.so.1
+# becomes
+#     usr/lib/libfoo.so -> ../../lib/libfoo.so.1
+# since 'lib32' is a symlink to 'lib'.
+#
+# Likewise,
+#     usr/lib/octeon2/libbar.so -> ../../../lib32/octeon2/libbar.so.1
+# becomes
+#     usr/lib/octeon2/libbar.so -> ../../lib/libbar.so.1
+# assuming lib32->lib and lib/octeon2->lib.
+#
+# $1: symlink
+# $2: base path
+define simplify_symlink
+( \
+	FULL_SRC="$$(readlink -f $$(dirname $1))/$$(basename $1)" ; \
+	FULL_DEST="$$(readlink -f $1)" ; \
+	FULL_BASE="$$(readlink -f $2)" ; \
+	REL_SRC="$${FULL_SRC#$${FULL_BASE}/}" ; \
+	REL_DEST="$${FULL_DEST#$${FULL_BASE}/}" ; \
+	DOTS="$(call relpath_prefix,$${REL_SRC})" ; \
+	ln -sf "$${DOTS}$${REL_DEST}" "$${FULL_SRC}" ; \
+)
+endef

toolchain/toolchain-buildroot/Config.in

@@ -0,0 +1,117 @@
+# Config entries for internal toolchain backend
+
+if BR2_TOOLCHAIN_BUILDROOT
+
+comment "Toolchain Buildroot Options"
+
+config BR2_TOOLCHAIN_BUILDROOT_VENDOR
+	string "custom toolchain vendor name"
+	default "buildroot"
+	help
+	  This option allows to customize the "vendor" part of the
+	  toolchain tuple, where the toolchain tuple has the form
+	  <arch>-<vendor>-<os>-<libc>. The default value, "buildroot",
+	  is fine for most cases, except in very specific situations
+	  where gcc might make different decisions based on the vendor
+	  part of the tuple. The value "unknown" is not allowed, as the
+	  cross-compiling toolchain might then be confused with the
+	  native toolchain when the target and host architecture are
+	  identical. The value can not be empty either.
+
+	  If you're not sure, just leave the default "buildroot" value.
+
+choice
+	prompt "C library"
+	default BR2_TOOLCHAIN_BUILDROOT_UCLIBC
+	default BR2_TOOLCHAIN_BUILDROOT_GLIBC if BR2_powerpc64
+
+config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
+	bool "uClibc-ng"
+	depends on BR2_aarch64 || BR2_aarch64_be || BR2_arcle   || BR2_arceb  || \
+		   BR2_arm     || BR2_armeb    || \
+		   BR2_i386    || BR2_m68k   || BR2_microblaze || \
+		   BR2_mips    || BR2_mipsel || BR2_mips64 || BR2_mips64el || \
+		   BR2_or1k    || BR2_powerpc || BR2_RISCV_64 || BR2_sh2a   || \
+		   BR2_sh4     || BR2_sh4eb   || BR2_sparc || BR2_xtensa || \
+		   BR2_x86_64
+	select BR2_TOOLCHAIN_USES_UCLIBC
+	help
+	  This option selects uClibc-ng as the C library for the
+	  cross-compilation toolchain.
+
+	  http://uclibc-ng.org
+
+config BR2_TOOLCHAIN_BUILDROOT_GLIBC
+	bool "glibc"
+	depends on BR2_arm         || BR2_armeb      || BR2_aarch64 || \
+		   BR2_aarch64_be  || BR2_i386       || BR2_mips    || \
+		   BR2_mipsel      || BR2_mips64     || BR2_mips64el|| \
+		   BR2_powerpc     || BR2_powerpc64  || BR2_powerpc64le || \
+		   BR2_riscv       || BR2_s390x      || BR2_sh          || \
+		   BR2_sparc64     || BR2_x86_64     || BR2_microblaze  || \
+		   BR2_nios2       || (BR2_arc && BR2_ARC_ATOMIC_EXT)   || BR2_csky
+	depends on BR2_USE_MMU
+	depends on !BR2_STATIC_LIBS
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 || !BR2_powerpc64le
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 || !BR2_MIPS_NAN_2008
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0 || !BR2_RISCV_64
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1 || !BR2_arc
+	depends on !BR2_powerpc_SPE
+	depends on BR2_RISCV_ISA_RVA || !BR2_riscv
+	select BR2_TOOLCHAIN_USES_GLIBC
+	help
+	  This option selects glibc as the C library for the
+	  cross-compilation toolchain.
+
+	  http://www.gnu.org/software/libc/
+
+comment "glibc needs a toolchain w/ dynamic library, kernel headers >= 3.2"
+	depends on BR2_USE_MMU
+	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
+
+# glibc >= 2.26 require kernel headers >= 3.10 on powerpc64le.
+comment "glibc on powerpc64le needs a toolchain w/ headers >= 3.10"
+	depends on BR2_powerpc64le
+	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
+
+# Support for MIPS NAN2008 needs headers >= 4.5
+comment "glibc on MIPS w/ NAN2008 needs a toolchain w/ headers >= 4.5"
+	depends on BR2_MIPS_NAN_2008
+	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
+
+config BR2_TOOLCHAIN_BUILDROOT_MUSL
+	bool "musl"
+	depends on BR2_aarch64	   || BR2_arm   || BR2_armeb   || BR2_i386 || \
+		   BR2_microblaze  || BR2_mips  || BR2_mipsel  || BR2_mips64 || \
+		   BR2_mips64el    || BR2_or1k  || BR2_powerpc || BR2_powerpc64 || \
+		   BR2_powerpc64le || BR2_RISCV_64 || BR2_sh   || BR2_x86_64
+	depends on !BR2_powerpc_SPE # not supported, build breaks
+	depends on !(BR2_powerpc64 || BR2_powerpc64le) || BR2_POWERPC_CPU_HAS_ALTIVEC
+	# sh2 nommu is supported by musl, but we don't have support
+	# for it in Buildroot.
+	depends on BR2_USE_MMU
+	select BR2_TOOLCHAIN_USES_MUSL
+	help
+	  This option selects musl as the C library for the
+	  cross-compilation toolchain.
+
+	  https://www.musl-libc.org/
+
+endchoice
+
+config BR2_TOOLCHAIN_BUILDROOT_LIBC
+	string
+	default "uclibc" if BR2_TOOLCHAIN_BUILDROOT_UCLIBC
+	default "glibc"  if BR2_TOOLCHAIN_BUILDROOT_GLIBC
+	default "musl"	 if BR2_TOOLCHAIN_BUILDROOT_MUSL
+
+source "package/linux-headers/Config.in.host"
+source "package/linux-headers/Config.in"
+source "package/musl/Config.in"
+source "package/uclibc/Config.in"
+source "package/glibc/Config.in"
+source "package/binutils/Config.in.host"
+source "package/gcc/Config.in.host"
+source "package/elf2flt/Config.in.host"
+endif

toolchain/toolchain-buildroot/toolchain-buildroot.mk

@@ -0,0 +1,17 @@
+################################################################################
+#
+# toolchain-buildroot
+#
+################################################################################
+
+BR_LIBC = $(call qstrip,$(BR2_TOOLCHAIN_BUILDROOT_LIBC))
+
+# Triggering the build of the host-gcc-final will automatically do the
+# build of binutils, uClibc, kernel headers and all the intermediate
+# gcc steps.
+
+TOOLCHAIN_BUILDROOT_DEPENDENCIES = host-gcc-final
+
+TOOLCHAIN_BUILDROOT_ADD_TOOLCHAIN_DEPENDENCY = NO
+
+$(eval $(virtual-package))

toolchain/toolchain-external/Config.in

@@ -0,0 +1,165 @@
+if BR2_TOOLCHAIN_EXTERNAL
+
+comment "Toolchain External Options"
+
+choice
+	prompt "Toolchain"
+
+comment "glibc toolchains only available with shared lib support"
+	depends on BR2_STATIC_LIBS
+
+# Kept toolchains sorted by architecture in order to use some toolchain
+# as default choice
+
+# Aarch64 (use ARM toolchain by default)
+source "toolchain/toolchain-external/toolchain-external-arm-aarch64/Config.in"
+source "toolchain/toolchain-external/toolchain-external-linaro-aarch64/Config.in"
+source "toolchain/toolchain-external/toolchain-external-codesourcery-aarch64/Config.in"
+
+# Aarch64 big-endian
+source "toolchain/toolchain-external/toolchain-external-arm-aarch64-be/Config.in"
+source "toolchain/toolchain-external/toolchain-external-linaro-aarch64-be/Config.in"
+
+# ARC
+source "toolchain/toolchain-external/toolchain-external-synopsys-arc/Config.in"
+
+# Andes
+source "toolchain/toolchain-external/toolchain-external-andes-nds32/Config.in"
+
+# ARM (use ARM toolchain by default)
+source "toolchain/toolchain-external/toolchain-external-arm-arm/Config.in"
+source "toolchain/toolchain-external/toolchain-external-linaro-arm/Config.in"
+source "toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in"
+
+# ARM big-endian
+source "toolchain/toolchain-external/toolchain-external-linaro-armeb/Config.in"
+
+# MIPS (use codesourcery toolchain by default)
+source "toolchain/toolchain-external/toolchain-external-codesourcery-mips/Config.in"
+source "toolchain/toolchain-external/toolchain-external-codescape-img-mips/Config.in"
+source "toolchain/toolchain-external/toolchain-external-codescape-mti-mips/Config.in"
+
+# NIOSII
+source "toolchain/toolchain-external/toolchain-external-codesourcery-niosII/Config.in"
+
+# Bootlin toolchains, available for virtually all architectures
+source "toolchain/toolchain-external/toolchain-external-bootlin/Config.in"
+
+# Kept last, so it remains the non-default choice, unless there isn't
+# any available toolchain profile for the currently selected
+# architecture, but before toolchains from br2-external trees.
+source "toolchain/toolchain-external/toolchain-external-custom/Config.in"
+
+# Toolchains from br2-external trees, if any
+source "$BR2_BASE_DIR/.br2-external.in.toolchains"
+
+endchoice
+
+choice
+	prompt "Toolchain origin"
+	# Keep compatibility with old defconfig files that are using
+	# custom toolchains, and which are therefore assuming that
+	# "preinstalled" in the default choice.
+	default BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED if BR2_TOOLCHAIN_EXTERNAL_CUSTOM
+
+config BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD
+	bool "Toolchain to be downloaded and installed"
+	help
+	  Select this option if you want Buildroot to download and
+	  install the toolchain. If you have selected a custom
+	  toolchain, specify the URL in BR2_TOOLCHAIN_EXTERNAL_URL.
+
+config BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED
+	bool "Pre-installed toolchain"
+	help
+	  Select this option if you want to use a pre-installed
+	  toolchain. Specify the path to this toolchain in
+	  BR2_TOOLCHAIN_EXTERNAL_PATH.
+
+endchoice
+
+config BR2_TOOLCHAIN_EXTERNAL_PATH
+	string "Toolchain path"
+	default ""
+	depends on BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED
+	help
+	  Path to where the external toolchain is installed. The
+	  compiler itself is expected to be in the "bin" subdirectory
+	  of this path.
+
+	  If empty, the compiler will be searched in $PATH.
+
+config BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	bool
+	select BR2_TOOLCHAIN_USES_GLIBC
+
+config BR2_TOOLCHAIN_EXTERNAL_UCLIBC
+	bool
+	select BR2_TOOLCHAIN_USES_UCLIBC
+
+config BR2_TOOLCHAIN_EXTERNAL_MUSL
+	bool
+	select BR2_TOOLCHAIN_USES_MUSL
+	# Compatibility headers: cdefs.h, queue.h
+	select BR2_PACKAGE_MUSL_COMPAT_HEADERS
+
+# Make sure the virtual-package infra checks the provider
+config BR2_PACKAGE_HAS_TOOLCHAIN_EXTERNAL
+	bool
+	default y
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	string
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	string
+
+# Kept toolchains sorted as in the choice above
+# The toolchain Config.in.options must define
+# BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL and BR2_TOOLCHAIN_EXTERNAL_PREFIX
+
+# Aarch64
+source "toolchain/toolchain-external/toolchain-external-arm-aarch64/Config.in.options"
+source "toolchain/toolchain-external/toolchain-external-linaro-aarch64/Config.in.options"
+source "toolchain/toolchain-external/toolchain-external-codesourcery-aarch64/Config.in.options"
+
+# Aarch64 big-endian
+source "toolchain/toolchain-external/toolchain-external-arm-aarch64-be/Config.in.options"
+source "toolchain/toolchain-external/toolchain-external-linaro-aarch64-be/Config.in.options"
+
+# ARC
+source "toolchain/toolchain-external/toolchain-external-synopsys-arc/Config.in.options"
+
+# Andes
+source "toolchain/toolchain-external/toolchain-external-andes-nds32/Config.in.options"
+
+# ARM
+source "toolchain/toolchain-external/toolchain-external-arm-arm/Config.in.options"
+source "toolchain/toolchain-external/toolchain-external-linaro-arm/Config.in.options"
+source "toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in.options"
+
+# ARM big-endian
+source "toolchain/toolchain-external/toolchain-external-linaro-armeb/Config.in.options"
+
+# MIPS
+source "toolchain/toolchain-external/toolchain-external-codesourcery-mips/Config.in.options"
+source "toolchain/toolchain-external/toolchain-external-codescape-img-mips/Config.in.options"
+source "toolchain/toolchain-external/toolchain-external-codescape-mti-mips/Config.in.options"
+
+# NIOSII
+source "toolchain/toolchain-external/toolchain-external-codesourcery-niosII/Config.in.options"
+
+# Bootlin toolchains
+source "toolchain/toolchain-external/toolchain-external-bootlin/Config.in.options"
+
+# Custom toolchains
+source "toolchain/toolchain-external/toolchain-external-custom/Config.in.options"
+
+config BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY
+	bool "Copy gdb server to the Target"
+	depends on BR2_TOOLCHAIN_EXTERNAL
+	help
+	  Copy the gdbserver provided by the external toolchain to the
+	  target.
+
+endif # BR2_TOOLCHAIN_EXTERNAL

toolchain/toolchain-external/pkg-toolchain-external.mk

@@ -0,0 +1,632 @@
+################################################################################
+# External toolchain package infrastructure
+#
+# This package infrastructure implements the support for external
+# toolchains, i.e toolchains that are available pre-built, ready to
+# use. Such toolchain may either be readily available on the Web
+# (Linaro, Sourcery CodeBench, from processor vendors) or may be built
+# with tools like Crosstool-NG or Buildroot itself. So far, we have
+# tested this with:
+#
+#  * Toolchains generated by Crosstool-NG
+#  * Toolchains generated by Buildroot
+#  * Toolchains provided by Linaro for the ARM and AArch64
+#    architectures
+#  * Sourcery CodeBench toolchains (from Mentor Graphics) for the ARM,
+#    MIPS, PowerPC, x86_64 and NIOS 2 architectures. For the MIPS
+#    toolchain, the -muclibc variant isn't supported yet, only the
+#    default glibc-based variant is.
+#  * Synopsys DesignWare toolchains for ARC cores
+#
+# The basic principle is the following
+#
+#  1. If the toolchain is not pre-installed, download and extract it
+#  in $(TOOLCHAIN_EXTERNAL_INSTALL_DIR). Otherwise,
+#  $(TOOLCHAIN_EXTERNAL_INSTALL_DIR) points to were the toolchain has
+#  already been installed by the user.
+#
+#  2. For all external toolchains, perform some checks on the
+#  conformity between the toolchain configuration described in the
+#  Buildroot menuconfig system, and the real configuration of the
+#  external toolchain. This is for example important to make sure that
+#  the Buildroot configuration system knows whether the toolchain
+#  supports RPC, IPv6, locales, large files, etc. Unfortunately, these
+#  things cannot be detected automatically, since the value of these
+#  options (such as BR2_TOOLCHAIN_HAS_NATIVE_RPC) are needed at
+#  configuration time because these options are used as dependencies
+#  for other options. And at configuration time, we are not able to
+#  retrieve the external toolchain configuration.
+#
+#  3. Copy the libraries needed at runtime to the target directory,
+#  $(TARGET_DIR). Obviously, things such as the C library, the dynamic
+#  loader and a few other utility libraries are needed if dynamic
+#  applications are to be executed on the target system.
+#
+#  4. Copy the libraries and headers to the staging directory. This
+#  will allow all further calls to gcc to be made using --sysroot
+#  $(STAGING_DIR), which greatly simplifies the compilation of the
+#  packages when using external toolchains. So in the end, only the
+#  cross-compiler binaries remains external, all libraries and headers
+#  are imported into the Buildroot tree.
+#
+#  5. Build a toolchain wrapper which executes the external toolchain
+#  with a number of arguments (sysroot/march/mtune/..) hardcoded,
+#  so we're sure the correct configuration is always used and the
+#  toolchain behaves similar to an internal toolchain.
+#  This toolchain wrapper and symlinks are installed into
+#  $(HOST_DIR)/bin like for the internal toolchains, and the rest
+#  of Buildroot is handled identical for the 2 toolchain types.
+################################################################################
+
+#
+# Definitions of where the toolchain can be found
+#
+
+TOOLCHAIN_EXTERNAL_PREFIX = $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX))
+TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR = $(HOST_DIR)/opt/ext-toolchain
+
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y)
+TOOLCHAIN_EXTERNAL_INSTALL_DIR = $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR)
+else
+TOOLCHAIN_EXTERNAL_INSTALL_DIR = $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PATH))
+endif
+
+ifeq ($(TOOLCHAIN_EXTERNAL_INSTALL_DIR),)
+ifneq ($(TOOLCHAIN_EXTERNAL_PREFIX),)
+# if no path set, figure it out from path
+TOOLCHAIN_EXTERNAL_BIN := $(dir $(shell which $(TOOLCHAIN_EXTERNAL_PREFIX)-gcc))
+endif
+else
+TOOLCHAIN_EXTERNAL_REL_BIN_PATH = $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_REL_BIN_PATH))
+ifeq ($(TOOLCHAIN_EXTERNAL_REL_BIN_PATH),)
+TOOLCHAIN_EXTERNAL_REL_BIN_PATH = bin
+endif
+TOOLCHAIN_EXTERNAL_BIN = $(TOOLCHAIN_EXTERNAL_INSTALL_DIR)/$(TOOLCHAIN_EXTERNAL_REL_BIN_PATH)
+endif
+
+# If this is a buildroot toolchain, it already has a wrapper which we want to
+# bypass. Since this is only evaluated after it has been extracted, we can use
+# $(wildcard ...) here.
+TOOLCHAIN_EXTERNAL_SUFFIX = \
+	$(if $(wildcard $(TOOLCHAIN_EXTERNAL_BIN)/*.br_real),.br_real)
+
+TOOLCHAIN_EXTERNAL_CROSS = $(TOOLCHAIN_EXTERNAL_BIN)/$(TOOLCHAIN_EXTERNAL_PREFIX)-
+TOOLCHAIN_EXTERNAL_CC = $(TOOLCHAIN_EXTERNAL_CROSS)gcc$(TOOLCHAIN_EXTERNAL_SUFFIX)
+TOOLCHAIN_EXTERNAL_CXX = $(TOOLCHAIN_EXTERNAL_CROSS)g++$(TOOLCHAIN_EXTERNAL_SUFFIX)
+TOOLCHAIN_EXTERNAL_GDC = $(TOOLCHAIN_EXTERNAL_CROSS)gdc$(TOOLCHAIN_EXTERNAL_SUFFIX)
+TOOLCHAIN_EXTERNAL_FC = $(TOOLCHAIN_EXTERNAL_CROSS)gfortran$(TOOLCHAIN_EXTERNAL_SUFFIX)
+TOOLCHAIN_EXTERNAL_READELF = $(TOOLCHAIN_EXTERNAL_CROSS)readelf
+
+# Normal handling of downloaded toolchain tarball extraction.
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y)
+# As a regular package, the toolchain gets extracted in $(@D), but
+# since it's actually a fairly special package, we need it to be moved
+# into TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR.
+define TOOLCHAIN_EXTERNAL_MOVE
+	rm -rf $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR)
+	mkdir -p $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR)
+	mv $(@D)/* $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR)/
+endef
+endif
+
+#
+# Definitions of the list of libraries that should be copied to the target.
+#
+
+TOOLCHAIN_EXTERNAL_LIBS += ld*.so.* libgcc_s.so.* libatomic.so.*
+
+ifneq ($(BR2_SSP_NONE),y)
+TOOLCHAIN_EXTERNAL_LIBS += libssp.so.*
+endif
+
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC)$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC),y)
+TOOLCHAIN_EXTERNAL_LIBS += libc.so.* libcrypt.so.* libdl.so.* libm.so.* libnsl.so.* libresolv.so.* librt.so.* libutil.so.*
+ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
+TOOLCHAIN_EXTERNAL_LIBS += libpthread.so.*
+ifneq ($(BR2_PACKAGE_GDB)$(BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY),)
+TOOLCHAIN_EXTERNAL_LIBS += libthread_db.so.*
+endif # gdbserver
+endif # ! no threads
+endif
+
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC),y)
+TOOLCHAIN_EXTERNAL_LIBS += libnss_files.so.* libnss_dns.so.* libmvec.so.* libanl.so.*
+endif
+
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_MUSL),y)
+TOOLCHAIN_EXTERNAL_LIBS += libc.so
+endif
+
+ifeq ($(BR2_INSTALL_LIBSTDCPP),y)
+TOOLCHAIN_EXTERNAL_LIBS += libstdc++.so.*
+endif
+
+ifeq ($(BR2_TOOLCHAIN_HAS_FORTRAN),y)
+TOOLCHAIN_EXTERNAL_LIBS += libgfortran.so.*
+# fortran needs quadmath on x86 and x86_64
+ifeq ($(BR2_TOOLCHAIN_HAS_LIBQUADMATH),y)
+TOOLCHAIN_EXTERNAL_LIBS += libquadmath.so*
+endif
+endif
+
+ifeq ($(BR2_TOOLCHAIN_HAS_OPENMP),y)
+TOOLCHAIN_EXTERNAL_LIBS += libgomp.so.*
+endif
+
+ifeq ($(BR2_TOOLCHAIN_HAS_DLANG),y)
+TOOLCHAIN_EXTERNAL_LIBS += libgdruntime.so* libgphobos.so*
+endif
+
+TOOLCHAIN_EXTERNAL_LIBS += $(addsuffix .so*,$(call qstrip,$(BR2_TOOLCHAIN_EXTRA_LIBS)))
+
+
+#
+# Definition of the CFLAGS to use with the external toolchain, as well as the
+# common toolchain wrapper build arguments
+#
+
+# march/mtune/floating point mode needs to be passed to the external toolchain
+# to select the right multilib variant
+ifeq ($(BR2_x86_64),y)
+TOOLCHAIN_EXTERNAL_CFLAGS += -m64
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_64
+endif
+ifneq ($(GCC_TARGET_ARCH),)
+TOOLCHAIN_EXTERNAL_CFLAGS += -march=$(GCC_TARGET_ARCH)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_ARCH='"$(GCC_TARGET_ARCH)"'
+endif
+ifneq ($(GCC_TARGET_CPU),)
+TOOLCHAIN_EXTERNAL_CFLAGS += -mcpu=$(GCC_TARGET_CPU)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_CPU='"$(GCC_TARGET_CPU)"'
+endif
+ifneq ($(GCC_TARGET_ABI),)
+TOOLCHAIN_EXTERNAL_CFLAGS += -mabi=$(GCC_TARGET_ABI)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_ABI='"$(GCC_TARGET_ABI)"'
+endif
+ifeq ($(BR2_TOOLCHAIN_HAS_MNAN_OPTION),y)
+ifneq ($(GCC_TARGET_NAN),)
+TOOLCHAIN_EXTERNAL_CFLAGS += -mnan=$(GCC_TARGET_NAN)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_NAN='"$(GCC_TARGET_NAN)"'
+endif
+endif
+ifneq ($(GCC_TARGET_FP32_MODE),)
+TOOLCHAIN_EXTERNAL_CFLAGS += -mfp$(GCC_TARGET_FP32_MODE)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_FP32_MODE='"$(GCC_TARGET_FP32_MODE)"'
+endif
+ifneq ($(GCC_TARGET_FPU),)
+TOOLCHAIN_EXTERNAL_CFLAGS += -mfpu=$(GCC_TARGET_FPU)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_FPU='"$(GCC_TARGET_FPU)"'
+endif
+ifneq ($(GCC_TARGET_FLOAT_ABI),)
+TOOLCHAIN_EXTERNAL_CFLAGS += -mfloat-abi=$(GCC_TARGET_FLOAT_ABI)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_FLOAT_ABI='"$(GCC_TARGET_FLOAT_ABI)"'
+endif
+ifneq ($(GCC_TARGET_MODE),)
+TOOLCHAIN_EXTERNAL_CFLAGS += -m$(GCC_TARGET_MODE)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_MODE='"$(GCC_TARGET_MODE)"'
+endif
+ifeq ($(BR2_BINFMT_FLAT),y)
+TOOLCHAIN_EXTERNAL_CFLAGS += -Wl,-elf2flt
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_BINFMT_FLAT
+endif
+ifeq ($(BR2_mipsel)$(BR2_mips64el),y)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_MIPS_TARGET_LITTLE_ENDIAN
+TOOLCHAIN_EXTERNAL_CFLAGS += -EL
+endif
+ifeq ($(BR2_mips)$(BR2_mips64),y)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_MIPS_TARGET_BIG_ENDIAN
+TOOLCHAIN_EXTERNAL_CFLAGS += -EB
+endif
+ifeq ($(BR2_arceb),y)
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_ARC_TARGET_BIG_ENDIAN
+TOOLCHAIN_EXTERNAL_CFLAGS += -EB
+endif
+
+TOOLCHAIN_EXTERNAL_CFLAGS += $(call qstrip,$(BR2_TARGET_OPTIMIZATION))
+
+ifeq ($(BR2_SOFT_FLOAT),y)
+TOOLCHAIN_EXTERNAL_CFLAGS += -msoft-float
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_SOFTFLOAT=1
+endif
+
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += \
+	-DBR_CROSS_PATH_SUFFIX='"$(TOOLCHAIN_EXTERNAL_SUFFIX)"'
+
+ifeq ($(filter $(HOST_DIR)/%,$(TOOLCHAIN_EXTERNAL_BIN)),)
+# TOOLCHAIN_EXTERNAL_BIN points outside HOST_DIR => absolute path
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += \
+	-DBR_CROSS_PATH_ABS='"$(TOOLCHAIN_EXTERNAL_BIN)"'
+else
+# TOOLCHAIN_EXTERNAL_BIN points inside HOST_DIR => relative path
+TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += \
+	-DBR_CROSS_PATH_REL='"$(TOOLCHAIN_EXTERNAL_BIN:$(HOST_DIR)/%=%)"'
+endif
+
+
+#
+# The following functions creates the symbolic links needed to get the
+# cross-compilation tools visible in $(HOST_DIR)/bin. Some of
+# links are done directly to the corresponding tool in the external
+# toolchain installation directory, while some other links are done to
+# the toolchain wrapper (preprocessor, C, C++ and Fortran compiler)
+#
+# We skip gdb symlink when we are building our own gdb to prevent two
+# gdb's in $(HOST_DIR)/bin.
+#
+# The LTO support in gcc creates wrappers for ar, ranlib and nm which load
+# the lto plugin. These wrappers are called *-gcc-ar, *-gcc-ranlib, and
+# *-gcc-nm and should be used instead of the real programs when -flto is
+# used. However, we should not add the toolchain wrapper for them, and they
+# match the *cc-* pattern. Therefore, an additional case is added for *-ar,
+# *-ranlib and *-nm.
+define TOOLCHAIN_EXTERNAL_INSTALL_WRAPPER
+	$(Q)cd $(HOST_DIR)/bin; \
+	for i in $(TOOLCHAIN_EXTERNAL_CROSS)*; do \
+		base=$${i##*/}; \
+		case "$$base" in \
+		*-ar|*-ranlib|*-nm) \
+			ln -sf $$(echo $$i | sed 's%^$(HOST_DIR)%..%') .; \
+			;; \
+		*cc|*cc-*|*++|*++-*|*cpp|*-gfortran|*-gdc) \
+			ln -sf toolchain-wrapper $$base; \
+			;; \
+		*gdb|*gdbtui) \
+			if test "$(BR2_PACKAGE_HOST_GDB)" != "y"; then \
+				ln -sf $$(echo $$i | sed 's%^$(HOST_DIR)%..%') .; \
+			fi \
+			;; \
+		*) \
+			ln -sf $$(echo $$i | sed 's%^$(HOST_DIR)%..%') .; \
+			;; \
+		esac; \
+	done
+endef
+
+
+# Various utility functions used by the external toolchain package
+# infrastructure. Those functions are mainly responsible for:
+#
+#   - installation the toolchain libraries to $(TARGET_DIR)
+#   - copying the toolchain sysroot to $(STAGING_DIR)
+#   - installing a gdbinit file
+#
+# Details about sysroot directory selection.
+#
+# To find the sysroot directory, we use the trick of looking for the
+# 'libc.a' file with the -print-file-name gcc option, and then
+# mangling the path to find the base directory of the sysroot.
+#
+# Note that we do not use the -print-sysroot option, because it is
+# only available since gcc 4.4.x, and we only recently dropped support
+# for 4.2.x and 4.3.x.
+#
+# When doing this, we don't pass any option to gcc that could select a
+# multilib variant (such as -march) as we want the "main" sysroot,
+# which contains all variants of the C library in the case of multilib
+# toolchains. We use the TARGET_CC_NO_SYSROOT variable, which is the
+# path of the cross-compiler, without the --sysroot=$(STAGING_DIR),
+# since what we want to find is the location of the original toolchain
+# sysroot. This "main" sysroot directory is stored in SYSROOT_DIR.
+#
+# Then, multilib toolchains are a little bit more complicated, since
+# they in fact have multiple sysroots, one for each variant supported
+# by the toolchain. So we need to find the particular sysroot we're
+# interested in.
+#
+# To do so, we ask the compiler where its sysroot is by passing all
+# flags (including -march and al.), except the --sysroot flag since we
+# want to the compiler to tell us where its original sysroot
+# is. ARCH_SUBDIR will contain the subdirectory, in the main
+# SYSROOT_DIR, that corresponds to the selected architecture
+# variant. ARCH_SYSROOT_DIR will contain the full path to this
+# location.
+#
+# One might wonder why we don't just bother with ARCH_SYSROOT_DIR. The
+# fact is that in multilib toolchains, the header files are often only
+# present in the main sysroot, and only the libraries are available in
+# each variant-specific sysroot directory.
+
+
+# toolchain_find_sysroot returns the sysroot location for the given
+# compiler + flags. We need to handle cases where libc.a is in:
+#
+#  - lib/
+#  - usr/lib/
+#  - lib32/
+#  - lib64/
+#  - lib32-fp/ (Cavium toolchain)
+#  - lib64-fp/ (Cavium toolchain)
+#  - usr/lib/<tuple>/ (Linaro toolchain)
+#
+# And variations on these.
+define toolchain_find_sysroot
+$$(printf $(call toolchain_find_libc_a,$(1)) | sed -r -e 's:/(usr/)?lib(32|64)?([^/]*)?/([^/]*/)?libc\.a:/:')
+endef
+
+# Returns the lib subdirectory for the given compiler + flags (i.e
+# typically lib32 or lib64 for some toolchains)
+define toolchain_find_libdir
+$$(printf $(call toolchain_find_libc_a,$(1)) | sed -r -e 's:.*/(usr/)?(lib(32|64)?([^/]*)?(/[^/]*)?)/libc.a:\2:')
+endef
+
+# Returns the location of the libc.a file for the given compiler + flags
+define toolchain_find_libc_a
+$$(readlink -f $$(LANG=C $(1) -print-file-name=libc.a))
+endef
+
+# Integration of the toolchain into Buildroot: find the main sysroot
+# and the variant-specific sysroot, then copy the needed libraries to
+# the $(TARGET_DIR) and copy the whole sysroot (libraries and headers)
+# to $(STAGING_DIR).
+#
+# Variables are defined as follows:
+#
+# SYSROOT_DIR:          the main sysroot directory, deduced from the location of
+#                       the libc.a file in the default multilib variant, by
+#                       removing the usr/lib[32|64]/libc.a part of the path.
+#                       Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/
+#
+# ARCH_SYSROOT_DIR:     the sysroot of the selected multilib variant,
+#                       deduced from the location of the libc.a file in the
+#                       selected multilib variant (taking into account the
+#                       CFLAGS), by removing usr/lib[32|64]/libc.a at the end
+#                       of the path.
+#                       Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/mips16/soft-float/el/
+#
+# ARCH_LIB_DIR:         'lib', 'lib32' or 'lib64' depending on where libraries
+#                       are stored. Deduced from the location of the libc.a file
+#                       in the selected multilib variant, by looking at
+#                       usr/lib??/libc.a.
+#                       Ex: lib
+#
+# ARCH_SUBDIR:          the relative location of the sysroot of the selected
+#                       multilib variant compared to the main sysroot.
+#                       Ex: mips16/soft-float/el
+#
+# SUPPORT_LIB_DIR:      some toolchains, such as recent Linaro toolchains,
+#                       store GCC support libraries (libstdc++,
+#                       libgcc_s, etc.) outside of the sysroot. In
+#                       this case, SUPPORT_LIB_DIR is set to a
+#                       non-empty value, and points to the directory
+#                       where these support libraries are
+#                       available. Those libraries will be copied to
+#                       our sysroot, and the directory will also be
+#                       considered when searching libraries for copy
+#                       to the target filesystem.
+#
+# Please be very careful to check the major toolchain sources:
+# Buildroot, Crosstool-NG, CodeSourcery and Linaro
+# before doing any modification on the below logic.
+
+ifeq ($(BR2_STATIC_LIBS),)
+define TOOLCHAIN_EXTERNAL_INSTALL_TARGET_LIBS
+	$(Q)$(call MESSAGE,"Copying external toolchain libraries to target...")
+	$(Q)for libpattern in $(TOOLCHAIN_EXTERNAL_LIBS); do \
+		$(call copy_toolchain_lib_root,$$libpattern); \
+	done
+endef
+endif
+
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY),y)
+define TOOLCHAIN_EXTERNAL_INSTALL_TARGET_GDBSERVER
+	$(Q)$(call MESSAGE,"Copying gdbserver")
+	$(Q)ARCH_SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
+	ARCH_LIB_DIR="$(call toolchain_find_libdir,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
+	gdbserver_found=0 ; \
+	for d in $${ARCH_SYSROOT_DIR}/usr \
+		 $${ARCH_SYSROOT_DIR}/../debug-root/usr \
+		 $${ARCH_SYSROOT_DIR}/usr/$${ARCH_LIB_DIR} \
+		 $(TOOLCHAIN_EXTERNAL_INSTALL_DIR); do \
+		if test -f $${d}/bin/gdbserver ; then \
+			install -m 0755 -D $${d}/bin/gdbserver $(TARGET_DIR)/usr/bin/gdbserver ; \
+			gdbserver_found=1 ; \
+			break ; \
+		fi ; \
+	done ; \
+	if [ $${gdbserver_found} -eq 0 ] ; then \
+		echo "Could not find gdbserver in external toolchain" ; \
+		exit 1 ; \
+	fi
+endef
+endif
+
+define TOOLCHAIN_EXTERNAL_INSTALL_SYSROOT_LIBS
+	$(Q)SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC))" ; \
+	ARCH_SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
+	ARCH_LIB_DIR="$(call toolchain_find_libdir,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
+	SUPPORT_LIB_DIR="" ; \
+	if test `find $${ARCH_SYSROOT_DIR} -name 'libstdc++.a' | wc -l` -eq 0 ; then \
+		LIBSTDCPP_A_LOCATION=$$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS) -print-file-name=libstdc++.a) ; \
+		if [ -e "$${LIBSTDCPP_A_LOCATION}" ]; then \
+			SUPPORT_LIB_DIR=`readlink -f $${LIBSTDCPP_A_LOCATION} | sed -r -e 's:libstdc\+\+\.a::'` ; \
+		fi ; \
+	fi ; \
+	if [ "$${SYSROOT_DIR}" == "$${ARCH_SYSROOT_DIR}" ] ; then \
+		ARCH_SUBDIR="" ; \
+	elif [ "`dirname $${ARCH_SYSROOT_DIR}`" = "`dirname $${SYSROOT_DIR}`" ] ; then \
+		SYSROOT_DIR_DIRNAME=`dirname $${SYSROOT_DIR}`/ ; \
+		ARCH_SUBDIR=`echo $${ARCH_SYSROOT_DIR} | sed -r -e "s:^$${SYSROOT_DIR_DIRNAME}(.*)/$$:\1:"` ; \
+	else \
+		ARCH_SUBDIR=`echo $${ARCH_SYSROOT_DIR} | sed -r -e "s:^$${SYSROOT_DIR}(.*)/$$:\1:"` ; \
+	fi ; \
+	$(call MESSAGE,"Copying external toolchain sysroot to staging...") ; \
+	$(call copy_toolchain_sysroot,$${SYSROOT_DIR},$${ARCH_SYSROOT_DIR},$${ARCH_SUBDIR},$${ARCH_LIB_DIR},$${SUPPORT_LIB_DIR})
+endef
+
+# Create a symlink from (usr/)$(ARCH_LIB_DIR) to lib.
+# Note: the skeleton package additionally creates lib32->lib or lib64->lib
+# (as appropriate)
+#
+# $1: destination directory (TARGET_DIR / STAGING_DIR)
+create_lib_symlinks = \
+	$(Q)DESTDIR="$(strip $1)" ; \
+	ARCH_LIB_DIR="$(call toolchain_find_libdir,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
+	if [ ! -e "$${DESTDIR}/$${ARCH_LIB_DIR}" -a ! -e "$${DESTDIR}/usr/$${ARCH_LIB_DIR}" ]; then \
+		relpath="$(call relpath_prefix,$${ARCH_LIB_DIR})" ; \
+		ln -snf $${relpath}lib "$${DESTDIR}/$${ARCH_LIB_DIR}" ; \
+		ln -snf $${relpath}lib "$${DESTDIR}/usr/$${ARCH_LIB_DIR}" ; \
+	fi
+
+define TOOLCHAIN_EXTERNAL_CREATE_STAGING_LIB_SYMLINK
+	$(call create_lib_symlinks,$(STAGING_DIR))
+endef
+
+define TOOLCHAIN_EXTERNAL_CREATE_TARGET_LIB_SYMLINK
+	$(call create_lib_symlinks,$(TARGET_DIR))
+endef
+
+#
+# Generate gdbinit file for use with Buildroot
+#
+define TOOLCHAIN_EXTERNAL_INSTALL_GDBINIT
+	$(Q)if test -f $(TARGET_CROSS)gdb ; then \
+		$(call MESSAGE,"Installing gdbinit"); \
+		$(gen_gdbinit_file); \
+	fi
+endef
+
+# GCC installs a libstdcxx-...so-gdb.py file that gdb will load automatically,
+# but it contains hardcoded paths referring to the location where the (external)
+# toolchain was built. Fix up these paths so that the pretty printers can be
+# loaded automatically.
+# By default, the pretty printers are installed in
+# $(datadir)/gcc-$(gcc_version)/python but this could have been overwritten with
+# the gcc configure option: --with-python-dir. We thus have to search the
+# correct path first.
+define TOOLCHAIN_EXTERNAL_FIXUP_PRETTY_PRINTER_LOADER
+	$(Q)loadfiles=$$(find $(STAGING_DIR) -name 'libstdc++.so*-gdb.py' 2>/dev/null); \
+	pythondir=$$(find $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR) -path '*/libstdcxx/__init__.py' 2>/dev/null | sed 's%/libstdcxx/__init__.py%%' | head -n1); \
+	if [ -n "$$loadfiles" ] && [ -n "$$pythondir" ]; then \
+		echo "Fixing up hardcoded paths in GDB pretty-printer auto-load file(s) for libstdcxx: $$loadfiles"; \
+		sed -ri \
+			-e 's%^libdir\s*=.*%libdir = "$(STAGING_DIR)/lib"%' \
+			-e "s%^pythondir\s*=.*%pythondir = '$$pythondir'%" \
+			$$loadfiles; \
+	fi
+endef
+
+# uClibc-ng dynamic loader is called ld-uClibc.so.1, but gcc is not
+# patched specifically for uClibc-ng, so it continues to generate
+# binaries that expect the dynamic loader to be named ld-uClibc.so.0,
+# like with the original uClibc. Therefore, we create an additional
+# symbolic link to make uClibc-ng systems work properly.
+define TOOLCHAIN_EXTERNAL_FIXUP_UCLIBCNG_LDSO
+	$(Q)if test -e $(TARGET_DIR)/lib/ld-uClibc.so.1; then \
+		ln -sf ld-uClibc.so.1 $(TARGET_DIR)/lib/ld-uClibc.so.0 ; \
+	fi
+	$(Q)if test -e $(TARGET_DIR)/lib/ld64-uClibc.so.1; then \
+		ln -sf ld64-uClibc.so.1 $(TARGET_DIR)/lib/ld64-uClibc.so.0 ; \
+	fi
+endef
+
+define TOOLCHAIN_EXTERNAL_INSTALL_TARGET_LDD
+	$(Q)if test -f $(STAGING_DIR)/usr/bin/ldd ; then \
+		$(INSTALL) -D $(STAGING_DIR)/usr/bin/ldd $(TARGET_DIR)/usr/bin/ldd ; \
+		$(SED) 's:.*/bin/bash:#!/bin/sh:' $(TARGET_DIR)/usr/bin/ldd ; \
+	fi
+endef
+
+################################################################################
+# inner-toolchain-external-package -- defines the generic installation rules
+# for external toolchain packages
+#
+#  argument 1 is the lowercase package name
+#  argument 2 is the uppercase package name, including a HOST_ prefix
+#             for host packages
+#  argument 3 is the uppercase package name, without the HOST_ prefix
+#             for host packages
+#  argument 4 is the type (target or host)
+################################################################################
+define inner-toolchain-external-package
+
+$(2)_INSTALL_STAGING = YES
+$(2)_ADD_TOOLCHAIN_DEPENDENCY = NO
+
+# In fact, we don't need to download the toolchain, since it is already
+# available on the system, so force the site and source to be empty so
+# that nothing will be downloaded/extracted.
+ifeq ($$(BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED),y)
+$(2)_SITE =
+$(2)_SOURCE =
+endif
+
+ifeq ($$(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y)
+$(2)_EXCLUDES = usr/lib/locale/*
+
+$(2)_POST_EXTRACT_HOOKS += \
+	TOOLCHAIN_EXTERNAL_MOVE
+endif
+
+# Checks for an already installed toolchain: check the toolchain
+# location, check that it is usable, and then verify that it
+# matches the configuration provided in Buildroot: ABI, C++ support,
+# kernel headers version, type of C library and all C library features.
+define $(2)_CONFIGURE_CMDS
+	$$(Q)$$(call check_cross_compiler_exists,$$(TOOLCHAIN_EXTERNAL_CC))
+	$$(Q)$$(call check_unusable_toolchain,$$(TOOLCHAIN_EXTERNAL_CC))
+	$$(Q)SYSROOT_DIR="$$(call toolchain_find_sysroot,$$(TOOLCHAIN_EXTERNAL_CC))" ; \
+	$$(call check_kernel_headers_version,\
+		$$(BUILD_DIR),\
+		$$(call toolchain_find_sysroot,$$(TOOLCHAIN_EXTERNAL_CC)),\
+		$$(call qstrip,$$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)),\
+		$$(if $$(BR2_TOOLCHAIN_EXTERNAL_CUSTOM),loose,strict)); \
+	$$(call check_gcc_version,$$(TOOLCHAIN_EXTERNAL_CC),\
+		$$(call qstrip,$$(BR2_TOOLCHAIN_GCC_AT_LEAST))); \
+	if test "$$(BR2_arm)" = "y" ; then \
+		$$(call check_arm_abi,\
+			"$$(TOOLCHAIN_EXTERNAL_CC) $$(TOOLCHAIN_EXTERNAL_CFLAGS)") ; \
+	fi ; \
+	if test "$$(BR2_INSTALL_LIBSTDCPP)" = "y" ; then \
+		$$(call check_cplusplus,$$(TOOLCHAIN_EXTERNAL_CXX)) ; \
+	fi ; \
+	if test "$$(BR2_TOOLCHAIN_HAS_DLANG)" = "y" ; then \
+		$$(call check_dlang,$$(TOOLCHAIN_EXTERNAL_GDC)) ; \
+	fi ; \
+	if test "$$(BR2_TOOLCHAIN_HAS_FORTRAN)" = "y" ; then \
+		$$(call check_fortran,$$(TOOLCHAIN_EXTERNAL_FC)) ; \
+	fi ; \
+	if test "$$(BR2_TOOLCHAIN_HAS_OPENMP)" = "y" ; then \
+		$$(call check_openmp,$$(TOOLCHAIN_EXTERNAL_CC)) ; \
+	fi ; \
+	if test "$$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC)" = "y" ; then \
+		$$(call check_uclibc,$$$${SYSROOT_DIR}) ; \
+	elif test "$$(BR2_TOOLCHAIN_EXTERNAL_MUSL)" = "y" ; then \
+		$$(call check_musl,\
+			"$$(TOOLCHAIN_EXTERNAL_CC) $$(TOOLCHAIN_EXTERNAL_CFLAGS)") ; \
+	else \
+		$$(call check_glibc,$$$${SYSROOT_DIR}) ; \
+	fi
+	$$(Q)$$(call check_toolchain_ssp,$$(TOOLCHAIN_EXTERNAL_CC),$(BR2_SSP_OPTION))
+endef
+
+$(2)_TOOLCHAIN_WRAPPER_ARGS += $$(TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS)
+
+$(2)_BUILD_CMDS = $$(TOOLCHAIN_WRAPPER_BUILD)
+
+define $(2)_INSTALL_STAGING_CMDS
+	$$(TOOLCHAIN_WRAPPER_INSTALL)
+	$$(TOOLCHAIN_EXTERNAL_CREATE_STAGING_LIB_SYMLINK)
+	$$(TOOLCHAIN_EXTERNAL_INSTALL_SYSROOT_LIBS)
+	$$(TOOLCHAIN_EXTERNAL_INSTALL_WRAPPER)
+	$$(TOOLCHAIN_EXTERNAL_INSTALL_GDBINIT)
+	$$(TOOLCHAIN_EXTERNAL_FIXUP_PRETTY_PRINTER_LOADER)
+endef
+
+# Even though we're installing things in both the staging, the host
+# and the target directory, we do everything within the
+# install-staging step, arbitrarily.
+define $(2)_INSTALL_TARGET_CMDS
+	$$(TOOLCHAIN_EXTERNAL_CREATE_TARGET_LIB_SYMLINK)
+	$$(TOOLCHAIN_EXTERNAL_INSTALL_TARGET_LIBS)
+	$$(TOOLCHAIN_EXTERNAL_INSTALL_TARGET_GDBSERVER)
+	$$(TOOLCHAIN_EXTERNAL_FIXUP_UCLIBCNG_LDSO)
+	$$(TOOLCHAIN_EXTERNAL_INSTALL_TARGET_LDD)
+endef
+
+# Call the generic package infrastructure to generate the necessary
+# make targets
+$(call inner-generic-package,$(1),$(2),$(3),$(4))
+
+endef
+
+toolchain-external-package = $(call inner-toolchain-external-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)

toolchain/toolchain-external/toolchain-external-andes-nds32/Config.in

@@ -0,0 +1,15 @@
+config BR2_TOOLCHAIN_EXTERNAL_ANDES_NDS32
+	bool "Andes nds32"
+	depends on BR2_nds32
+	depends on !BR2_STATIC_LIBS
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	select BR2_HOSTARCH_NEEDS_IA32_LIBS
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_8
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_TOOLCHAIN_HAS_SSP
+	help
+	  nds32 toolchain for the nds32 architecture. It uses GCC
+	  8.2.1, GDB 8.1.1, glibc 2.28, Binutils 2.30. It generates
+	  code that runs on ae3xx platform

toolchain/toolchain-external/toolchain-external-andes-nds32/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_ANDES_NDS32
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "nds32le-linux"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-andes-nds32"
+
+endif

toolchain/toolchain-external/toolchain-external-andes-nds32/toolchain-external-andes-nds32.hash

@@ -0,0 +1,2 @@
+# From https://github.com/vincentzwc/prebuilt-nds32-toolchain/releases/download/20180521/nds32le-linux-glibc-v3-upstream.tar.gz
+sha256 6050601df85ad93a4c211c1d57ed3773edb62aa505f7e07d7d555652e83af2cc  nds32le-linux-glibc-v3-upstream.tar.gz

toolchain/toolchain-external/toolchain-external-andes-nds32/toolchain-external-andes-nds32.mk

@@ -0,0 +1,10 @@
+################################################################################
+#
+# toolchain-external-andes-nds32
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_ANDES_NDS32_SITE = https://github.com/vincentzwc/prebuilt-nds32-toolchain/releases/download/20180521
+TOOLCHAIN_EXTERNAL_ANDES_NDS32_SOURCE = nds32le-linux-glibc-v3-upstream.tar.gz
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-arm-aarch64-be/Config.in

@@ -0,0 +1,19 @@
+config BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE
+	bool "Arm AArch64 BE 2021.07"
+	depends on BR2_aarch64_be
+	depends on BR2_HOSTARCH = "x86_64"
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_10
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Arm toolchain for the AArch64 Big Endian architecture.
+
+	  This is the same toolchain that was previously distributed by
+	  Linaro.
+
+	  https://developer.arm.com/open-source/gnu-toolchain

toolchain/toolchain-external/toolchain-external-arm-aarch64-be/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "aarch64_be-none-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-arm-aarch64-be"
+
+endif

toolchain/toolchain-external/toolchain-external-arm-aarch64-be/toolchain-external-arm-aarch64-be.hash

@@ -0,0 +1,4 @@
+# From https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64_be-none-linux-gnu.tar.xz.asc
+md5  54cbaef7db7eb3de27732500f9da9c6f  gcc-arm-10.3-2021.07-x86_64-aarch64_be-none-linux-gnu.tar.xz
+# locally calculated
+sha256  63c34cac07ceadd74620ea87f27af1aa6a6f55c20a5bc116af21a59ddb6b6a6a  gcc-arm-10.3-2021.07-x86_64-aarch64_be-none-linux-gnu.tar.xz

toolchain/toolchain-external/toolchain-external-arm-aarch64-be/toolchain-external-arm-aarch64-be.mk

@@ -0,0 +1,12 @@
+################################################################################
+#
+# toolchain-external-arm-aarch64-be
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE_VERSION = 2021.07
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE_SITE = https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE_VERSION)/binrel
+
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE_SOURCE = gcc-arm-10.3-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE_VERSION)-x86_64-aarch64_be-none-linux-gnu.tar.xz
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-arm-aarch64/Config.in

@@ -0,0 +1,19 @@
+config BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64
+	bool "Arm AArch64 2021.07"
+	depends on BR2_aarch64
+	depends on BR2_HOSTARCH = "x86_64"
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_10
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Arm toolchain for the AArch64 architecture.
+
+	  This is the same toolchain that was previously distributed by
+	  Linaro.
+
+	  https://developer.arm.com/open-source/gnu-toolchain

toolchain/toolchain-external/toolchain-external-arm-aarch64/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "aarch64-none-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-arm-aarch64"
+
+endif

toolchain/toolchain-external/toolchain-external-arm-aarch64/toolchain-external-arm-aarch64.hash

@@ -0,0 +1,4 @@
+# From https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu.tar.xz.asc
+md5  07bbe2b5277b75ba36a924e9136366a4  gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu.tar.xz
+# locally calculated
+sha256  1e33d53dea59c8de823bbdfe0798280bdcd138636c7060da9d77a97ded095a84  gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu.tar.xz

toolchain/toolchain-external/toolchain-external-arm-aarch64/toolchain-external-arm-aarch64.mk

@@ -0,0 +1,12 @@
+################################################################################
+#
+# toolchain-external-arm-aarch64
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION = 2021.07
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_SITE = https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION)/binrel
+
+TOOLCHAIN_EXTERNAL_ARM_AARCH64_SOURCE = gcc-arm-10.3-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_VERSION)-x86_64-aarch64-none-linux-gnu.tar.xz
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-arm-arm/Config.in

@@ -0,0 +1,31 @@
+comment "Arm toolchains available for Cortex-A with NEON + EABIhf"
+	depends on BR2_arm
+	depends on !BR2_ARM_CPU_ARMV7A || !BR2_ARM_EABIHF || !BR2_ARM_CPU_HAS_NEON
+	depends on !BR2_STATIC_LIBS
+
+config BR2_TOOLCHAIN_EXTERNAL_ARM_ARM
+	bool "Arm ARM 2021.07"
+	depends on BR2_arm
+	depends on BR2_ARM_CPU_ARMV7A || BR2_ARM_CPU_ARMV8A
+	depends on BR2_ARM_CPU_HAS_NEON
+	depends on BR2_HOSTARCH = "x86_64"
+	depends on BR2_ARM_EABIHF
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_10
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Arm toolchain for the ARM architecture. It uses GCC 10.3,
+	  GDB 10.2, glibc 2.33, Binutils 2.36.1. It generates code
+	  that runs on all Cortex-A profile devices. The code
+	  generated uses the hard floating point calling convention,
+	  and uses the NEON FPU instructions.
+
+	  This is the same toolchain that was previously distributed by
+	  Linaro.
+
+	  https://developer.arm.com/open-source/gnu-toolchain

toolchain/toolchain-external/toolchain-external-arm-arm/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_ARM_ARM
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "arm-none-linux-gnueabihf"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-arm-arm"
+
+endif

toolchain/toolchain-external/toolchain-external-arm-arm/toolchain-external-arm-arm.hash

@@ -0,0 +1,4 @@
+# From https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf.tar.xz.asc
+md5  87ec580b290df2febc7c476f59484635  gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf.tar.xz
+# locally calculated
+sha256  aa074fa8371a4f73fecbd16bd62c8b1945f23289e26414794f130d6ccdf8e39c  gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf.tar.xz

toolchain/toolchain-external/toolchain-external-arm-arm/toolchain-external-arm-arm.mk

@@ -0,0 +1,12 @@
+################################################################################
+#
+# toolchain-external-arm-arm
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_ARM_ARM_VERSION = 2021.07
+TOOLCHAIN_EXTERNAL_ARM_ARM_SITE = https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-$(TOOLCHAIN_EXTERNAL_ARM_ARM_VERSION)/binrel
+
+TOOLCHAIN_EXTERNAL_ARM_ARM_SOURCE = gcc-arm-10.3-$(TOOLCHAIN_EXTERNAL_ARM_ARM_VERSION)-x86_64-arm-none-linux-gnueabihf.tar.xz
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-bootlin/Config.in

@@ -0,0 +1,9 @@
+config BR2_TOOLCHAIN_EXTERNAL_BOOTLIN
+	bool "Bootlin toolchains"
+	depends on BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARCH_SUPPORTS
+	depends on BR2_HOSTARCH = "x86_64"
+	help
+	  Bootlin toolchains are built using Buildroot for a large
+	  number of architectures and C libraries configurations.
+
+	  https://toolchains.bootlin.com

toolchain/toolchain-external/toolchain-external-bootlin/toolchain-external-bootlin.hash

@@ -0,0 +1,340 @@
+# This file was auto-generated by support/scripts/gen-bootlin-toolchains
+# Do not edit
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64/tarballs/aarch64--glibc--bleeding-edge-2020.08-1.sha256
+sha256  212f3c05f3b2263b0e2f902d055aecc2755eba10c0011927788a38faee8fc9aa  aarch64--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64/tarballs/aarch64--glibc--stable-2020.08-1.sha256
+sha256  8ab7a2f17cb96621b048ab0a872650dd62faa54cd74c961b9902b8c04bff7dd1  aarch64--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64/tarballs/aarch64--musl--bleeding-edge-2020.08-1.sha256
+sha256  3cf00c1ccaf16d0fbc526529789791de1cf98b918ff812e779f8400d40b6c048  aarch64--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64/tarballs/aarch64--musl--stable-2020.08-1.sha256
+sha256  8319d27e3e637f32ecbdf49ceee2e9b7768b32d3ec7c92c888ff52e6f062bde4  aarch64--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64/tarballs/aarch64--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  57fe5cecf37778b35dd09d9a016a1d6d9d7bb0e96ffcc5565e0aa483a46ea3db  aarch64--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64/tarballs/aarch64--uclibc--stable-2020.08-1.sha256
+sha256  04176f56ac977215c5257c307cece2d32e03770b96380e09c50379d4d84a5b39  aarch64--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64be/tarballs/aarch64be--glibc--bleeding-edge-2020.08-1.sha256
+sha256  9631a57809d2fc2c7bb82bdd79d7647ccabe193126cc59ff9721a573d8870510  aarch64be--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64be/tarballs/aarch64be--glibc--stable-2020.08-1.sha256
+sha256  71e24a2a205726d7d8ec56ead13b7eb427d5aed0e057a94ee06688334a07e6dd  aarch64be--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64be/tarballs/aarch64be--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  76017614f0e7770499b5d18943398e51ae1c36d075cf8fba90ea050a29cad747  aarch64be--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64be/tarballs/aarch64be--uclibc--stable-2020.08-1.sha256
+sha256  a3bff78e98b2e17ab142ec630f9184f0cd4be6f1f313fdc112d89a843d92cedc  aarch64be--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/arcle-750d/tarballs/arcle-750d--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  e33570bdddc08d01b0da81ef6c3b240c6e0a4948f0100314b0be63c18c5f75db  arcle-750d--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/arcle-750d/tarballs/arcle-750d--uclibc--stable-2020.08-1.sha256
+sha256  bae0cbcab3b3b0149503aef6003dd816102b261461e37d89d32ffe9eb7f5dab9  arcle-750d--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/arcle-hs38/tarballs/arcle-hs38--glibc--bleeding-edge-2020.08-1.sha256
+sha256  219be8c5390da6830e7529cb0a611996a8c9451bfa1560d7bda4ed5b182f7744  arcle-hs38--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/arcle-hs38/tarballs/arcle-hs38--glibc--stable-2020.08-1.sha256
+sha256  ca73399803b6bb46cf27aa2bef5f98eae05fb2fa547403777354067117b44f2f  arcle-hs38--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/arcle-hs38/tarballs/arcle-hs38--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  65e1408112518c1b31350285838f000a78a0dcd78880842933ef80d64d023967  arcle-hs38--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/arcle-hs38/tarballs/arcle-hs38--uclibc--stable-2020.08-1.sha256
+sha256  f0839aa541fe3f29660387c731b52e495bf1b285127b9fba91350b5b67f8ff3e  arcle-hs38--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/tarballs/armv5-eabi--glibc--bleeding-edge-2020.08-1.sha256
+sha256  261e73520fb211f63a88ecce0689d3647acf295527bd6bd16e88e1bd65b3c603  armv5-eabi--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/tarballs/armv5-eabi--glibc--stable-2020.08-1.sha256
+sha256  ed175329057693e496b0d6dbac1ff9db8f8f34737530ab38b5ed677afaefad03  armv5-eabi--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/tarballs/armv5-eabi--musl--bleeding-edge-2020.08-1.sha256
+sha256  486b2424321b9866c2677e1dccd3a999394a86f890542c0c63edd5f9456bc4f9  armv5-eabi--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/tarballs/armv5-eabi--musl--stable-2020.08-1.sha256
+sha256  732edab571d017c550d74b8c53dc703fc650de7aab66e68c70a0bc19d66d0a22  armv5-eabi--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/tarballs/armv5-eabi--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  5e11ec24b910c43f24577b41a38cded192e443c0606be60944fe85b0fbf4b2dd  armv5-eabi--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/tarballs/armv5-eabi--uclibc--stable-2020.08-1.sha256
+sha256  cf6a668d4f30a4a2e76a0e88177e1301342cc011e94ea399353e77ede0efbb22  armv5-eabi--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv6-eabihf/tarballs/armv6-eabihf--glibc--bleeding-edge-2020.08-1.sha256
+sha256  0c66147f05b21529311338e246ed285f9f0f4830af0d4db28e401160a81d1b4f  armv6-eabihf--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv6-eabihf/tarballs/armv6-eabihf--glibc--stable-2020.08-1.sha256
+sha256  539e31b3bdcf76c3d6710951c74fbe682e2de8da4d110b981e9108b656890f4a  armv6-eabihf--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv6-eabihf/tarballs/armv6-eabihf--musl--bleeding-edge-2020.08-1.sha256
+sha256  e8c05fb7b909dfd5a42f6de78d1b20605c453a9aea219981966d213ee98968e2  armv6-eabihf--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv6-eabihf/tarballs/armv6-eabihf--musl--stable-2020.08-1.sha256
+sha256  68e43e3cd0e1fdd5c2b3ab718368f6ee24824725c641e148ef0a0da57f872034  armv6-eabihf--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv6-eabihf/tarballs/armv6-eabihf--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  749bb97f7535414c3096564f6e790d1e43ab8c406282480937d8f34478ac7a35  armv6-eabihf--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv6-eabihf/tarballs/armv6-eabihf--uclibc--stable-2020.08-1.sha256
+sha256  680a3bf708cb792c74561514dcba882727086c9317397e8a3ebece1b50fbea4e  armv6-eabihf--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv7-eabihf/tarballs/armv7-eabihf--glibc--bleeding-edge-2020.08-1.sha256
+sha256  9f5c703cea20834276e1a81e2e54483d0f4fe0e57063ba4d058338ef9c858eb2  armv7-eabihf--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv7-eabihf/tarballs/armv7-eabihf--glibc--stable-2020.08-1.sha256
+sha256  7b6682603af9a9b5c0e46fd57165723483bb68295e827d14d238e63f33a147a8  armv7-eabihf--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv7-eabihf/tarballs/armv7-eabihf--musl--bleeding-edge-2020.08-1.sha256
+sha256  d9e71499cfb1790a31056ca9199981f699c7e4966b5854f7780d97f5a74d601e  armv7-eabihf--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv7-eabihf/tarballs/armv7-eabihf--musl--stable-2020.08-1.sha256
+sha256  5c4c9bce5a2a46a9ad46e49e86df708893a8907e702a8ee1b5febd3950e030ed  armv7-eabihf--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv7-eabihf/tarballs/armv7-eabihf--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  7c3ee9f3d6bd4eda38ec94a686a9e348b0f800214f1225c68d172e4ac6b81066  armv7-eabihf--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv7-eabihf/tarballs/armv7-eabihf--uclibc--stable-2020.08-1.sha256
+sha256  f61866b0e60da62eff92b197f0e2a72e8d023bf944a25eb97efc9f5d93680ed9  armv7-eabihf--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv7m/tarballs/armv7m--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  9ce29bbcbc0a2c4925e814a6332c2c71e9a13476040e1db0a5495c68d1566bee  armv7m--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/armv7m/tarballs/armv7m--uclibc--stable-2020.08-1.sha256
+sha256  c20df31191b88df09d8ff225ca82e3bb769b2b7ffd3827f6dbf77a6d23230339  armv7m--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/m68k-68xxx/tarballs/m68k-68xxx--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  49e26c831694d15bb023a0a36cf9d3967e0ab75c555d8d07bba3317a0a18aa40  m68k-68xxx--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/m68k-68xxx/tarballs/m68k-68xxx--uclibc--stable-2020.08-1.sha256
+sha256  b133663f5589c71315224792b7e542cfa578e4c354e4a2ac8afcd5ee77fd6f45  m68k-68xxx--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/m68k-coldfire/tarballs/m68k-coldfire--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  3efa687ca5d1c5f1ec53032e05a12467ec148c2328836754841f74be217bb035  m68k-coldfire--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/m68k-coldfire/tarballs/m68k-coldfire--uclibc--stable-2020.08-1.sha256
+sha256  f9879a167e2279fe925a3dc963d349d3d84c85866ec91512b5a7ce667318d716  m68k-coldfire--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazebe/tarballs/microblazebe--glibc--bleeding-edge-2020.08-1.sha256
+sha256  d9fb4403d14f53d5f4be18f38e9604244042ea33ad980ebf0b0057b70d603d16  microblazebe--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazebe/tarballs/microblazebe--glibc--stable-2020.08-1.sha256
+sha256  ea466445240a25ba98cd7b34f748afca151fc2479b187566f2faa98f586bfd93  microblazebe--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazebe/tarballs/microblazebe--musl--bleeding-edge-2020.08-1.sha256
+sha256  0157d051ac5e8b46b4eed7333c9323d1c1602ad5e958e2c12fe9b8dc3b6781c7  microblazebe--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazebe/tarballs/microblazebe--musl--stable-2020.08-1.sha256
+sha256  ec51b07f63cf6d0af1eaed10641d8690a350d879e4b74addca2b3f7992186ee2  microblazebe--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazebe/tarballs/microblazebe--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  3aaaab352ca31b2263e29c363609a363a38931f9733c8ad3a386c5cbb791f8e1  microblazebe--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazebe/tarballs/microblazebe--uclibc--stable-2020.08-1.sha256
+sha256  d2b31177c9c009cd70a9ad4af6e903dfdb5254e3f49fe9389e0e11af7a98e6b6  microblazebe--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazeel/tarballs/microblazeel--glibc--bleeding-edge-2020.08-1.sha256
+sha256  83a451601b24b6a9c609630119e100ef9f18408bdfe1241cc53a904d540e6936  microblazeel--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazeel/tarballs/microblazeel--glibc--stable-2020.08-1.sha256
+sha256  c168737ec92889e632673f826b13cf74cfe4ba3ad06cc9e328ee20268ec439e9  microblazeel--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazeel/tarballs/microblazeel--musl--bleeding-edge-2020.08-1.sha256
+sha256  47660f8a4d84c7b8cd7610b8ba9df5bbfba043b35ebc07d96468c950b282f44d  microblazeel--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazeel/tarballs/microblazeel--musl--stable-2020.08-1.sha256
+sha256  6a51e38fe3f72765ad1172488321b60c59867253edce7b6680500c4193a542f7  microblazeel--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazeel/tarballs/microblazeel--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  6005fa2b229be380a2e4b8227daa0b4be4739b7cda628679de6d0e048755c769  microblazeel--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/microblazeel/tarballs/microblazeel--uclibc--stable-2020.08-1.sha256
+sha256  845a4795cab5f88d96679945f7147c5dfe0dd19751b88734ef786bfd5ee5db67  microblazeel--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32/tarballs/mips32--glibc--bleeding-edge-2020.08-1.sha256
+sha256  63baffcf0a94d7f1b7421ad61ddb56ce5c05595acd09f482dffe13ddf17efd81  mips32--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32/tarballs/mips32--glibc--stable-2020.08-1.sha256
+sha256  90e300a2d224ea79b69cae68e93b0aab70858381b0d11bac846458c625d72653  mips32--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32/tarballs/mips32--musl--bleeding-edge-2020.08-1.sha256
+sha256  4ebc20461eafca9c9b50e36f81e13095229aac0cd1dd98a985060f2e95665983  mips32--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32/tarballs/mips32--musl--stable-2020.08-1.sha256
+sha256  1a544242e9aaaee75c240439a31d2f4304b97705ed2d9e9e38ca552c5f03dced  mips32--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32/tarballs/mips32--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  4e0e1bf24e74746775992efd8b8bafbf5b6dd56bfdd1421b2207e1ea23ba2eb3  mips32--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32/tarballs/mips32--uclibc--stable-2020.08-1.sha256
+sha256  4c1da37d131f4e66b07536707c6d1be3de29719f228346d4c860c4b3cb4fef31  mips32--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32el/tarballs/mips32el--glibc--bleeding-edge-2020.08-1.sha256
+sha256  617c845261bb0a00571c68f250c5a369e60a09164dd3316ab8126c327d911c4b  mips32el--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32el/tarballs/mips32el--glibc--stable-2020.08-1.sha256
+sha256  87875c25075b3850526a54c5e828ce489355d0d50107c262539ee5f577f38d6d  mips32el--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32el/tarballs/mips32el--musl--bleeding-edge-2020.08-1.sha256
+sha256  4c81898f2e484c1e1e7d7ac1ae80e0aca5619ef01190df37e41ca459a147e682  mips32el--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32el/tarballs/mips32el--musl--stable-2020.08-1.sha256
+sha256  02155c88e0bf92f63105803767ce457790bfd920297ef326c9920853b5a3fe20  mips32el--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32el/tarballs/mips32el--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  024b0e27fd0c9792bad1944e052768e03173b133079d7c95bf30435d05620152  mips32el--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32el/tarballs/mips32el--uclibc--stable-2020.08-1.sha256
+sha256  8398010ea3dbd43ee99b6be0e3340db44b32228bf063a9c13bf43a359e3d1f6e  mips32el--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r5el/tarballs/mips32r5el--glibc--bleeding-edge-2020.08-1.sha256
+sha256  f000e8a78a24671a6f87909156e0c2a7403ab5864001c1388faf60190f8594c8  mips32r5el--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r5el/tarballs/mips32r5el--glibc--stable-2020.08-1.sha256
+sha256  a52a115b852afce04732aa9460c58f30fbfdb17601f9bf32ea97a77d1a073a53  mips32r5el--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r5el/tarballs/mips32r5el--musl--bleeding-edge-2020.08-1.sha256
+sha256  2620edf1045c61ddaf12f979a86719fa83b6598eb10f358a379e52462bb734ba  mips32r5el--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r5el/tarballs/mips32r5el--musl--stable-2020.08-1.sha256
+sha256  0e03a5f2a7d8ba739f3ef53538d73c33bfc55f45522d4515688ebcb58005e5a1  mips32r5el--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r5el/tarballs/mips32r5el--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  585e252971553b52833d3970f709196707d908a84a5e1be8360e3019d6bb0da9  mips32r5el--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r5el/tarballs/mips32r5el--uclibc--stable-2020.08-1.sha256
+sha256  7ffccb1f86e7b0f1dd0d87f455ff5f2619a58724850b0b9f106b6545d4de8b3f  mips32r5el--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r6el/tarballs/mips32r6el--glibc--bleeding-edge-2020.08-1.sha256
+sha256  d6376aeb2b243a58a98c415f2ecf131e14ccdce849a76c0f01902ca4b02fc0ba  mips32r6el--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r6el/tarballs/mips32r6el--glibc--stable-2020.08-1.sha256
+sha256  8640635116e26e51d57b6d5dc1e3213528f742f0cf97cd326af4f5d8e17a63f2  mips32r6el--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r6el/tarballs/mips32r6el--musl--bleeding-edge-2020.08-1.sha256
+sha256  2647d34cb990bdab77efbcc6b4e3d5b1fd02c5032837b7a64bc52cef64aba4ec  mips32r6el--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r6el/tarballs/mips32r6el--musl--stable-2020.08-1.sha256
+sha256  24b1adfa2eb31f49ae5b4fce9ee9fcb30205ca6f29e423f77bd851070baaa255  mips32r6el--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r6el/tarballs/mips32r6el--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  18dee7e9de84f6e7d6c9d083decdd465ab08979ebd661d82efbe5dc93f11dcb0  mips32r6el--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips32r6el/tarballs/mips32r6el--uclibc--stable-2020.08-1.sha256
+sha256  28999f7474a84c3ec36b504c47cf671fc6e82d9b38580a0e2ebe495850ada097  mips32r6el--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64-n32/tarballs/mips64-n32--glibc--bleeding-edge-2020.08-1.sha256
+sha256  b5d90c06c894d841677da5f81e395113d22a79c53f934e12151128660dd08e76  mips64-n32--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64-n32/tarballs/mips64-n32--glibc--stable-2020.08-1.sha256
+sha256  7ed7a81f1a086e47ddb79d0bdc7142a6b7349feea20b05393be133cc4cf1fff5  mips64-n32--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64-n32/tarballs/mips64-n32--musl--bleeding-edge-2020.08-1.sha256
+sha256  937ce7ffda61c93489862122fe6dbfd53445afbdbfb615c06805b05497f336fb  mips64-n32--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64-n32/tarballs/mips64-n32--musl--stable-2020.08-1.sha256
+sha256  2a2acf732498b0acb22f815e1ce7c3ca8124719131febe95c723b1cbab76d947  mips64-n32--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64-n32/tarballs/mips64-n32--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  16ac2a957757f56e0414a638bb3bd526b2d1c3055dd7e036dcdec4bf950f0d1b  mips64-n32--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64-n32/tarballs/mips64-n32--uclibc--stable-2020.08-1.sha256
+sha256  10d9fb894e5e548e47e2930139117de9549ea49b971ca9fad12f56ef6d188b77  mips64-n32--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64el-n32/tarballs/mips64el-n32--glibc--bleeding-edge-2020.08-1.sha256
+sha256  7de65f68b14350670adbd0249562d69e75f7fc65b749284303c32f88112cb6b4  mips64el-n32--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64el-n32/tarballs/mips64el-n32--glibc--stable-2020.08-1.sha256
+sha256  a6eea19d94a7a953cac84670dcac3adb42dd3eb8950b1f7ca0f1ef37abc7e33f  mips64el-n32--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64el-n32/tarballs/mips64el-n32--musl--bleeding-edge-2020.08-1.sha256
+sha256  7cff57dd6d0ee7778c5b764a388bf9e997ba2349da5274b8d8598173030618be  mips64el-n32--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64el-n32/tarballs/mips64el-n32--musl--stable-2020.08-1.sha256
+sha256  3c42d88c84689703d5b1380f4cf5ad20872611d08ce5fac1a4375bfec80a6b27  mips64el-n32--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64el-n32/tarballs/mips64el-n32--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  5553a979238f6a25c4e965e18cfbebe36018041ba46968174063328c25e485fc  mips64el-n32--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64el-n32/tarballs/mips64el-n32--uclibc--stable-2020.08-1.sha256
+sha256  80e8fa6cca6e0267dad5376bca79ce7457b8d345d43a0d409e4820a791965db9  mips64el-n32--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64r6el-n32/tarballs/mips64r6el-n32--glibc--bleeding-edge-2020.08-1.sha256
+sha256  0f09da21d6069642064f767a25e64c89caad80660ea184345652301c41a30ac9  mips64r6el-n32--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64r6el-n32/tarballs/mips64r6el-n32--glibc--stable-2020.08-1.sha256
+sha256  7100d3862983c5fb8237386ff4148f6e550e6b299c8b7946a349dedef60f75c9  mips64r6el-n32--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64r6el-n32/tarballs/mips64r6el-n32--musl--bleeding-edge-2020.08-1.sha256
+sha256  a692687149e59fdb7ad780cfc51e4a7307ed599433280369fe9e43c63453e4ec  mips64r6el-n32--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64r6el-n32/tarballs/mips64r6el-n32--musl--stable-2020.08-1.sha256
+sha256  e7a35e063fcd748df6f347e5aa97d081f4422480fb02ce6925c4c351c9aca318  mips64r6el-n32--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64r6el-n32/tarballs/mips64r6el-n32--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  69d4287cb32413e054684db9545e6898c09cb90c86a0dce8bb9999498eb798ab  mips64r6el-n32--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/mips64r6el-n32/tarballs/mips64r6el-n32--uclibc--stable-2020.08-1.sha256
+sha256  4d9eb8900b99871e02ae17b823341189dce3aa592ee82864c73ca3164948aaae  mips64r6el-n32--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/nios2/tarballs/nios2--glibc--bleeding-edge-2020.08-1.sha256
+sha256  b3c7c24e08759af3ea13fc39e8bddb52e4528a05d4aee3c2f75733e067d12edc  nios2--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/nios2/tarballs/nios2--glibc--stable-2020.08-1.sha256
+sha256  a46d5ff90e3623d159f3b5be53493e13a2e78ebb733a1ccb68e829d6e28aa129  nios2--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/openrisc/tarballs/openrisc--musl--bleeding-edge-2020.08-1.sha256
+sha256  382ec04511d51f99028b6c568c909e4e010bcfe1d4a4c1ff6f10c7c07c24b3b2  openrisc--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/openrisc/tarballs/openrisc--musl--stable-2020.08-1.sha256
+sha256  697ef122917022f400003931bc6da75fe07bb5234ef8186cbe027e560f04a168  openrisc--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/openrisc/tarballs/openrisc--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  e45d02c9272c909db1c92b6403ed1e0813889ef0c22b2f5166d2675f62d3f20f  openrisc--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/openrisc/tarballs/openrisc--uclibc--stable-2020.08-1.sha256
+sha256  62c60f9f99828a01f3a16060ceba74b8e2603a8ca3585649434a66f721ecdf75  openrisc--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-440fp/tarballs/powerpc-440fp--glibc--bleeding-edge-2020.08-2.sha256
+sha256  7b7c2f66ccd3d44cd8a829b5879277be9cfb17f34a26d5055b29a6bab40ff9df  powerpc-440fp--glibc--bleeding-edge-2020.08-2.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-440fp/tarballs/powerpc-440fp--glibc--stable-2020.08-2.sha256
+sha256  ae7b3d06090dfcf54b1e3b4bd4fda9ae5aaaf34aba9118820e6e9d8f1b70c0c4  powerpc-440fp--glibc--stable-2020.08-2.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-440fp/tarballs/powerpc-440fp--musl--bleeding-edge-2020.08-2.sha256
+sha256  a6def102659538e3e5838bf4267cd33486d795db753a7109b5e413499ef5df89  powerpc-440fp--musl--bleeding-edge-2020.08-2.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-440fp/tarballs/powerpc-440fp--musl--stable-2020.08-2.sha256
+sha256  76de0310078633ff34654c8c54d7e80a609c58521a7f2a8041ae4a574889d38a  powerpc-440fp--musl--stable-2020.08-2.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-440fp/tarballs/powerpc-440fp--uclibc--bleeding-edge-2020.08-2.sha256
+sha256  abbe38fc92a71d568c08452f99fe3470e5ded9a666c6829d9104fcf06b984503  powerpc-440fp--uclibc--bleeding-edge-2020.08-2.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-440fp/tarballs/powerpc-440fp--uclibc--stable-2020.08-2.sha256
+sha256  d4346ce563ddfbd4946b2dfbc766cafebbf4b09488dc8b398ab8bb242bac9268  powerpc-440fp--uclibc--stable-2020.08-2.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e300c3/tarballs/powerpc-e300c3--glibc--bleeding-edge-2020.08-1.sha256
+sha256  fe4b9817f060d84118fff5b7d855eacac472975f2adfececb641d2999f94a7ea  powerpc-e300c3--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e300c3/tarballs/powerpc-e300c3--glibc--stable-2020.08-1.sha256
+sha256  77d215d650850af65c3ac1792dcf100322f3dfea78ba174118197ec0c8a49807  powerpc-e300c3--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e300c3/tarballs/powerpc-e300c3--musl--bleeding-edge-2020.08-1.sha256
+sha256  4aa2b5c3c2c3263edfdf95284f0774aed8a47446b7a362ee44dc24d83db06896  powerpc-e300c3--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e300c3/tarballs/powerpc-e300c3--musl--stable-2020.08-1.sha256
+sha256  129d9aab59e9edfc68739b612f2ee4abce5679830250fbcd50b89ec3d2c865c5  powerpc-e300c3--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e300c3/tarballs/powerpc-e300c3--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  54e6960edd6419bb268b651ffedc24af73a72ad9dd145c1849a6e0fb6f997b15  powerpc-e300c3--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e300c3/tarballs/powerpc-e300c3--uclibc--stable-2020.08-1.sha256
+sha256  1057b488623a80037558a1439555b1a15b25a4d7f42dc49d0169349592ad5b3e  powerpc-e300c3--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e500mc/tarballs/powerpc-e500mc--glibc--bleeding-edge-2020.08-1.sha256
+sha256  8cab4fbb645be782a6eaeb7b6afd75fda4c0dc8ca9a4095b0be9b6eeb29a9759  powerpc-e500mc--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e500mc/tarballs/powerpc-e500mc--glibc--stable-2020.08-1.sha256
+sha256  5bb9f6b10b9d2d1a90a1a96a477b90eea32a269c1afccd89284a38a63d7f1c82  powerpc-e500mc--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e500mc/tarballs/powerpc-e500mc--musl--bleeding-edge-2020.08-1.sha256
+sha256  36636df56a04e44ddb5bba2e0a30b1f3986618399381278cdb2be207a25825c0  powerpc-e500mc--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e500mc/tarballs/powerpc-e500mc--musl--stable-2020.08-1.sha256
+sha256  7f924fc3cc3c9070ea1c9d270fea71715bd52beac14649d8a00416dfde1b897b  powerpc-e500mc--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e500mc/tarballs/powerpc-e500mc--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  262a2bddd29d6c24cbc32a873e78895499732624923195a5e7ffe16b487dc461  powerpc-e500mc--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc-e500mc/tarballs/powerpc-e500mc--uclibc--stable-2020.08-1.sha256
+sha256  e817af2d5a0fba654e7766dcad89380e278af9feb35c2d0591a0f8d893defa48  powerpc-e500mc--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-e5500/tarballs/powerpc64-e5500--glibc--bleeding-edge-2020.08-1.sha256
+sha256  418b79f8313ac4ff29cb6c2d639848eb74a0245666142a307374513cffd472e6  powerpc64-e5500--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-e5500/tarballs/powerpc64-e5500--glibc--stable-2020.08-1.sha256
+sha256  a51ddba944394de41b2f7c001772bb68074175d65a0976749da5289a5e705f23  powerpc64-e5500--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-e6500/tarballs/powerpc64-e6500--glibc--bleeding-edge-2020.08-1.sha256
+sha256  c537c2ef618f767762295806658bb0add514453068ea72ce2bd6e6e805e64af5  powerpc64-e6500--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-e6500/tarballs/powerpc64-e6500--glibc--stable-2020.08-1.sha256
+sha256  1d8aaf1492f69496b01fc930fa928ffd3144d1465c7c954128ed31ce576306b6  powerpc64-e6500--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-e6500/tarballs/powerpc64-e6500--musl--bleeding-edge-2020.08-1.sha256
+sha256  c46c7595384929211ce2f54655ceb4eb1d32054923892cd5d10913be364fa6f2  powerpc64-e6500--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-e6500/tarballs/powerpc64-e6500--musl--stable-2020.08-1.sha256
+sha256  a295073db591ed16eec90caf5fdef62ccff5550166d36496ab24aa993bdb2a42  powerpc64-e6500--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-power8/tarballs/powerpc64-power8--glibc--bleeding-edge-2020.08-1.sha256
+sha256  cbe65abf36fa807176a01488751a2e45800791534400b803c024e4c29357862c  powerpc64-power8--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-power8/tarballs/powerpc64-power8--glibc--stable-2020.08-1.sha256
+sha256  a670ec95dbfb53a812e9f21aec2ad880a3349125f19219b9a0d139a7d5b9e83b  powerpc64-power8--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-power8/tarballs/powerpc64-power8--musl--bleeding-edge-2020.08-1.sha256
+sha256  1f5b3da078534f9e493f29956d3a1f31ad0539d26b8f83e55c271b6671021928  powerpc64-power8--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64-power8/tarballs/powerpc64-power8--musl--stable-2020.08-1.sha256
+sha256  12043ab87cd4ae0c4339cddcb3eb017eaae406bbb332bf3edebfd7f70ecd0a31  powerpc64-power8--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64le-power8/tarballs/powerpc64le-power8--glibc--bleeding-edge-2020.08-1.sha256
+sha256  14e3ff4afbf363decb2c0ddc33b75e41aad9748a65a445cc176215853d0d6185  powerpc64le-power8--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64le-power8/tarballs/powerpc64le-power8--glibc--stable-2020.08-1.sha256
+sha256  342442f0773cdf5091443ab06ecf9c3d3c05cf8e2464b82a54707bec90d2a358  powerpc64le-power8--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64le-power8/tarballs/powerpc64le-power8--musl--bleeding-edge-2020.08-1.sha256
+sha256  fab5f4bc6d219f53f8b15e0d49aea27cdbac9e08e05946577440329c003fc216  powerpc64le-power8--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/powerpc64le-power8/tarballs/powerpc64le-power8--musl--stable-2020.08-1.sha256
+sha256  47d184beca271c67bdb544fac87cb2126ea2b397d076a79dfaf9667e999fbccd  powerpc64le-power8--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/riscv32-ilp32d/tarballs/riscv32-ilp32d--glibc--bleeding-edge-2020.08-1.sha256
+sha256  18a47b0c221137f40720df08e9bbdc0bcb6e68cde3a30906681e4dec83eb7547  riscv32-ilp32d--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/riscv64/tarballs/riscv64--glibc--bleeding-edge-2020.08-1.sha256
+sha256  09818eccb414359b1df87ec347d94e7bfccc45f8a5eafe8791fddf8110fcc581  riscv64--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/riscv64/tarballs/riscv64--musl--bleeding-edge-2020.08-1.sha256
+sha256  2af03e220070eacf6eaf63ccb7442ca5af805caf96ae52fb3eb15370988f12cf  riscv64--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4/tarballs/sh-sh4--glibc--bleeding-edge-2020.08-1.sha256
+sha256  277e78c999c2cba42b25660bbbe0d105a80277c986e0807cfa16a6595af6ce9e  sh-sh4--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4/tarballs/sh-sh4--glibc--stable-2020.08-1.sha256
+sha256  256064f35b2759c71ac1bb6c9fe74a7c7c62f070746cfeb35ff0ecb40a91c2b4  sh-sh4--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4/tarballs/sh-sh4--musl--bleeding-edge-2020.08-1.sha256
+sha256  34bf211ea0456ef86bbe914e0755f18681531a015e33b8c26b97ca68e29a3ed5  sh-sh4--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4/tarballs/sh-sh4--musl--stable-2020.08-1.sha256
+sha256  d335189728a6bebd5d180c58c6dabd049500d57ae60fcc8fc51ba5aafafb21d3  sh-sh4--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4/tarballs/sh-sh4--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  89e42b9e7bc3f67660656690899b2fad4015af5c9084dad6624315c39b486d76  sh-sh4--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4/tarballs/sh-sh4--uclibc--stable-2020.08-1.sha256
+sha256  13a60cd5653c24491748388284080d5b8da649a63090c0d308c3a3b069b04f21  sh-sh4--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4aeb/tarballs/sh-sh4aeb--glibc--bleeding-edge-2020.08-1.sha256
+sha256  fe063dd95c71ab41145412faf5e4c2a1386efdda5d944ecc83121fb9b4e213f2  sh-sh4aeb--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4aeb/tarballs/sh-sh4aeb--glibc--stable-2020.08-1.sha256
+sha256  054e669a3165aff35539d3fb7cbde2650c79e5aa88a90a844488ba175a645a07  sh-sh4aeb--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4aeb/tarballs/sh-sh4aeb--musl--bleeding-edge-2020.08-1.sha256
+sha256  aa2c560ed4cf4dac8a8803b3fccf846472a226a1a22833c1cbe0d7fd347af3a7  sh-sh4aeb--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sh-sh4aeb/tarballs/sh-sh4aeb--musl--stable-2020.08-1.sha256
+sha256  89e7fa5792ed1c35bd57c65935888beafce9a81f84c7d73508b1582539415a3b  sh-sh4aeb--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sparc64/tarballs/sparc64--glibc--bleeding-edge-2020.08-1.sha256
+sha256  abba04fcfa11a1eedbf5f5ff38d69d793d394f08998f8374723358b3123cc113  sparc64--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sparc64/tarballs/sparc64--glibc--stable-2020.08-1.sha256
+sha256  57184f6edfba03ae9c098ad0bab6635475bb45a874982ad11c0b91bf6043dbc4  sparc64--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sparcv8/tarballs/sparcv8--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  210defc0781683a240bac25295ff612d6b6c875c7d938d11512f8ec9472245bc  sparcv8--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/sparcv8/tarballs/sparcv8--uclibc--stable-2020.08-1.sha256
+sha256  14d508510bf0ed813f6436718486cce7fc6ebfb29b46eea5e52a474b2d5eaa00  sparcv8--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-64-core-i7/tarballs/x86-64-core-i7--glibc--bleeding-edge-2020.08-1.sha256
+sha256  77935109bbd1bdb84813a588b807052823033ed9094131fdd56f558023a3de08  x86-64-core-i7--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-64-core-i7/tarballs/x86-64-core-i7--glibc--stable-2020.08-1.sha256
+sha256  3dd408e857f5c8e579748995477f2783fcf5ad0aac89719ea3c5c75446dfa63c  x86-64-core-i7--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-64-core-i7/tarballs/x86-64-core-i7--musl--bleeding-edge-2020.08-1.sha256
+sha256  5d2d13d56a76db30ec28a11a3d6219fe407c3d1b9bbcd4a7255a783da4fcdfcb  x86-64-core-i7--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-64-core-i7/tarballs/x86-64-core-i7--musl--stable-2020.08-1.sha256
+sha256  26ea3cc16c294663b64123c15a95d53f00419ef0f6bcdef489865835c6022650  x86-64-core-i7--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-64-core-i7/tarballs/x86-64-core-i7--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  d1ff16cde93c727b4b39844877f93d865d6945185e71dba4b6c07d2d725e2576  x86-64-core-i7--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-64-core-i7/tarballs/x86-64-core-i7--uclibc--stable-2020.08-1.sha256
+sha256  0fdcb93add6ff697b536198da76b4e93bd81efd67793d6640fd6bc1b216abc00  x86-64-core-i7--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-core2/tarballs/x86-core2--glibc--bleeding-edge-2020.08-1.sha256
+sha256  10e7b362008fc3057e9eb42a3fab5f0dc430e05b285dc4f2ec3367d5f36a3094  x86-core2--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-core2/tarballs/x86-core2--glibc--stable-2020.08-1.sha256
+sha256  18bbabb672df24bbc2646d94d23c47d16a6c0d8342d910bf441021fad4a82ce3  x86-core2--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-core2/tarballs/x86-core2--musl--bleeding-edge-2020.08-1.sha256
+sha256  81edcbd69f2fd479d9a25597d0515d42c9c891e1a534d947e87a2e9a3dc67924  x86-core2--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-core2/tarballs/x86-core2--musl--stable-2020.08-1.sha256
+sha256  9e23de3364e1aaec50945c70089273a025ff44815ce4632324d1950e7ba07e9a  x86-core2--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-core2/tarballs/x86-core2--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  717b6c103e8e50202a45277eef8f9b41b978b17a0110cacddd52a01b7eba3039  x86-core2--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-core2/tarballs/x86-core2--uclibc--stable-2020.08-1.sha256
+sha256  e23812719fa1027fa0e2a161216cf97ff14bf3bcc19bb400281060a40e762a0d  x86-core2--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-i686/tarballs/x86-i686--glibc--bleeding-edge-2020.08-1.sha256
+sha256  9e8c83479dc91e516ee66fe21ff8693afa380cfdb3192c5c1351430a035ab92a  x86-i686--glibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-i686/tarballs/x86-i686--glibc--stable-2020.08-1.sha256
+sha256  77362d37279636371a42b09bab4f8f1a51a786ed7ec316221786b279389c8008  x86-i686--glibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-i686/tarballs/x86-i686--musl--bleeding-edge-2020.08-1.sha256
+sha256  ccb6896f02be3444d6cabff0966a0b6f866ebc6d32b483031541626c2fc748fe  x86-i686--musl--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-i686/tarballs/x86-i686--musl--stable-2020.08-1.sha256
+sha256  bbbf8b7946e65f35366cb0371910fe3e95e6399c4e6a9cac8b0a4674bcadc36b  x86-i686--musl--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-i686/tarballs/x86-i686--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  bd57d5cd7958ba7469d74abdf93db1993042f30c774ec3d1fceff57d522a489c  x86-i686--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/x86-i686/tarballs/x86-i686--uclibc--stable-2020.08-1.sha256
+sha256  139c31c25f9834137bbbb4aadc9d78def2819d2c1b9e89dd2300b11fb4879bb4  x86-i686--uclibc--stable-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/xtensa-lx60/tarballs/xtensa-lx60--uclibc--bleeding-edge-2020.08-1.sha256
+sha256  46801fc1ae89f380c1b6e1bf8ea723f9d7b1590eea3a2d1218a0307cd4325bc8  xtensa-lx60--uclibc--bleeding-edge-2020.08-1.tar.bz2
+# From https://toolchains.bootlin.com/downloads/releases/toolchains/xtensa-lx60/tarballs/xtensa-lx60--uclibc--stable-2020.08-1.sha256
+sha256  b4b28d855594290c853292c9cce43bba573d4187ecb47d78f25411a7f4300d49  xtensa-lx60--uclibc--stable-2020.08-1.tar.bz2

toolchain/toolchain-external/toolchain-external-codescape-img-mips/Config.in

@@ -0,0 +1,65 @@
+config BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS
+	bool "Codescape IMG GNU Linux Toolchain 2018.09"
+	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_7
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on BR2_MIPS_CPU_MIPS32R6 || (BR2_MIPS_CPU_MIPS64R6 && !BR2_MIPS_SOFT_FLOAT)
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_6
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Codescape IMG GNU Linux Toolchain 2018.09 for the MIPS
+	  architecture, from MIPS Tech LLC. It uses gcc 6.3.0,
+	  binutils 2.28.51, glibc 2.20, gdb 7.9.1 and kernel headers
+	  4.7. It has support for the following variants:
+	    - MIPS32r6 - Big-Endian, Hard-Float, 2008 NaN, o32 ABI
+	      Select 'MIPS (big endian)' Target Architecture
+	      Select 'mips 32r6' Target Architecture Variant
+	      Disable 'Use soft-float'
+	    - MIPS32r6 - Big-Endian, Soft-Float, 2008 NaN, o32 ABI
+	      Select 'MIPS (big endian)' Target Architecture
+	      Select 'mips 32r6' Target Architecture Variant
+	      Enable 'Use soft-float'
+	    - MIPS32r6 - Little-Endian, Hard-Float, 2008 NaN, o32 ABI
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r6' Target Architecture Variant
+	      Disable 'Use soft-float'
+	    - MIPS32r6 - Little-Endian, Soft-Float, 2008 NaN, o32 ABI
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r6' Target Architecture Variant
+	      Enable 'Use soft-float'
+	    - MIPS32r6 - Little-Endian, Hard-Float, 2008 NaN, o32 ABI,
+	      microMIPS
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r6' Target Architecture Variant
+	      Disable 'Use soft-float'
+	      Set BR2_TARGET_OPTIMIZATION to '-mmicromips'
+	    - MIPS32r6 - Little-Endian, Soft-Float, 2008 NaN, o32 ABI,
+	      microMIPS
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r6' Target Architecture Variant
+	      Enable 'Use soft-float'
+	      Set BR2_TARGET_OPTIMIZATION to '-mmicromips'
+	    - MIPS64r6 - Big-Endian, Hard-Float, 2008 NaN, n32 ABI
+	      Select 'MIPS64 (big endian)' Target Architecture
+	      Select 'mips 64r6' Target Architecture Variant
+	      Select 'n32' Target ABI
+	      Disable 'Use soft-float'
+	    - MIPS64r6 - Little-Endian, Hard-Float, 2008 NaN, n32 ABI
+	      Select 'MIPS64 (little endian)' Target Architecture
+	      Select 'mips 64r6' Target Architecture Variant
+	      Select 'n32' Target ABI
+	      Disable 'Use soft-float'
+	    - MIPS64r6 - Big-Endian, Hard-Float, 2008 NaN, n64 ABI
+	      Select 'MIPS64 (big endian)' Target Architecture
+	      Select 'mips 64r6' Target Architecture Variant
+	      Select 'n64' Target ABI
+	      Disable 'Use soft-float'
+	    - MIPS64r6 - Little-Endian, Hard-Float, 2008 NaN, n64 ABI
+	      Select 'MIPS64 (little endian)' Target Architecture
+	      Select 'mips 64r6' Target Architecture Variant
+	      Select 'n64' Target ABI
+	      Disable 'Use soft-float'

toolchain/toolchain-external/toolchain-external-codescape-img-mips/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "mips-img-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-codescape-img-mips"
+
+endif

toolchain/toolchain-external/toolchain-external-codescape-img-mips/toolchain-external-codescape-img-mips.hash

@@ -0,0 +1,4 @@
+# Codescape toolchains from MIPS Tech LLC
+# From: https://codescape.mips.com/components/toolchain/nanomips/2018.09-02/downloads.html
+sha256 ac035f3b6a8767522977963d8e1490520d58bccca7956f4503a1eefff6492b71  Codescape.GNU.Tools.Package.2018.09-02.for.MIPS.IMG.Linux.CentOS-6.x86.tar.gz
+sha256 09280f4fcbb993607905bf9a43bf5f3db2beed85726f0675b8453e19a9ddc429  Codescape.GNU.Tools.Package.2018.09-02.for.MIPS.IMG.Linux.CentOS-6.x86_64.tar.gz

toolchain/toolchain-external/toolchain-external-codescape-img-mips/toolchain-external-codescape-img-mips.mk

@@ -0,0 +1,51 @@
+################################################################################
+#
+# toolchain-external-codescape-img-mips
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_VERSION = 2018.09-02
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_SITE = https://codescape.mips.com/components/toolchain/$(TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_VERSION)
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_STRIP_COMPONENTS = 2
+
+ifeq ($(HOSTARCH),x86)
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_SOURCE = Codescape.GNU.Tools.Package.$(TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_VERSION).for.MIPS.IMG.Linux.CentOS-6.x86.tar.gz
+else
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_SOURCE = Codescape.GNU.Tools.Package.$(TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_VERSION).for.MIPS.IMG.Linux.CentOS-6.x86_64.tar.gz
+endif
+
+# Special fixup for Codescape MIPS toolchains, that have bin-<abi> and
+# sbin-<abi> directories. We create symlinks bin -> bin-<abi> and sbin
+# -> sbin-<abi> so that the rest of Buildroot can find the toolchain
+# tools in the appropriate location.
+ifeq ($(BR2_MIPS_OABI32),y)
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_BIN_DIR_SUFFIX = o32
+else ifeq ($(BR2_MIPS_NABI32),y)
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_BIN_DIR_SUFFIX = n32
+else ifeq ($(BR2_MIPS_NABI64),y)
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_BIN_DIR_SUFFIX = n64
+endif
+
+define TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_STAGING_FIXUPS
+	rmdir $(STAGING_DIR)/usr/bin $(STAGING_DIR)/usr/sbin
+	ln -sf bin-$(TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_BIN_DIR_SUFFIX) $(STAGING_DIR)/usr/bin
+	ln -sf sbin-$(TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_BIN_DIR_SUFFIX) $(STAGING_DIR)/usr/sbin
+endef
+
+# The Codescape toolchain uses a sysroot layout that places them
+# side-by-side instead of nested like multilibs. A symlink is needed
+# much like for the nested sysroots which are handled in
+# copy_toolchain_sysroot but there is not enough information in there
+# to determine whether the sysroot layout was nested or side-by-side.
+# Add the symlink here for now.
+define TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_SYMLINK
+	$(Q)ARCH_SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))"; \
+	ARCH_SUBDIR=`basename $${ARCH_SYSROOT_DIR}`; \
+	ln -snf . $(STAGING_DIR)/$${ARCH_SUBDIR}
+endef
+
+TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_POST_INSTALL_STAGING_HOOKS += \
+	TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_STAGING_FIXUPS \
+	TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS_SYMLINK
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-codescape-mti-mips/Config.in

@@ -0,0 +1,76 @@
+config BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS
+	bool "Codescape MTI GNU Linux Toolchain 2018.09"
+	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_7
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on BR2_MIPS_CPU_MIPS32R2 || (BR2_MIPS_CPU_MIPS64R2 && !BR2_MIPS_SOFT_FLOAT) || \
+		BR2_MIPS_CPU_MIPS32R5 || (BR2_MIPS_CPU_MIPS64R5 && !BR2_MIPS_SOFT_FLOAT)
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_6
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Codescape MTI GNU Linux Toolchain 2018.09 for the MIPS
+	  architecture, from MIPS Tech LLC. It uses gcc 6.3.0,
+	  binutils 2.28.51, glibc 2.20, gdb 7.9.1 and kernel headers
+	  4.7. It has support for the following variants:
+	    - MIPS32r2 - Big-Endian, Hard-Float, Legacy NaN, o32 ABI
+	      Select 'MIPS (big endian)' Target Architecture
+	      Select 'mips 32r2' Target Architecture Variant
+	      Disable 'Use soft-float'
+	    - MIPS32r2 - Big-Endian, Hard-Float, 2008 NaN, o32 ABI
+	      Select 'MIPS (big endian)' Target Architecture
+	      Select 'mips 32r2' Target Architecture Variant
+	      Disable 'Use soft-float'
+	      Set BR2_TARGET_OPTIMIZATION to '-mnan=2008'
+	    - MIPS32r2 - Big-Endian, Soft-Float, Legacy NaN, o32 ABI
+	      Select 'MIPS (big endian)' Target Architecture
+	      Select 'mips 32r2' Target Architecture Variant
+	      Enable 'Use soft-float'
+	    - MIPS32r2 - Little-Endian, Hard-Float, Legacy NaN, o32 ABI
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r2' Target Architecture Variant
+	      Disable 'Use soft-float'
+	    - MIPS32r2 - Little-Endian, Hard-Float, 2008 NaN, o32 ABI
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r2' Target Architecture Variant
+	      Disable 'Use soft-float'
+	      Set BR2_TARGET_OPTIMIZATION to '-mnan=2008'
+	    - MIPS32r2 - Little-Endian, Soft-Float, Legacy NaN, o32 ABI
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r2' Target Architecture Variant
+	      Enable 'Use soft-float'
+	    - MIPS32r2 - Little-Endian, Hard-Float, 2008 NaN, o32 ABI,
+	      microMIPS
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r2' Target Architecture Variant
+	      Enable 'Use soft-float'
+	      Set BR2_TARGET_OPTIMIZATION to '-mmicromips'
+	    - MIPS32r2 - Little-Endian, Soft-Float, Legacy NaN, o32 ABI,
+	      microMIPS
+	      Select 'MIPS (little endian)' Target Architecture
+	      Select 'mips 32r2' Target Architecture Variant
+	      Disable 'Use soft-float'
+	      Set BR2_TARGET_OPTIMIZATION to '-mmicromips'
+	    - MIPS64r2 - Big-Endian, Hard-Float, Legacy NaN, n32 ABI
+	      Select 'MIPS64 (big endian)' Target Architecture
+	      Select 'mips 64r2' Target Architecture Variant
+	      Select 'n32' Target ABI
+	      Disable 'Use soft-float'
+	    - MIPS64r2 - Little-Endian, Hard-Float, Legacy NaN, n32 ABI
+	      Select 'MIPS64 (little endian)' Target Architecture
+	      Select 'mips 64r2' Target Architecture Variant
+	      Select 'n32' Target ABI
+	      Disable 'Use soft-float'
+	    - MIPS64r2 - Big-Endian, Hard-Float, Legacy NaN, n64 ABI
+	      Select 'MIPS64 (big endian)' Target Architecture
+	      Select 'mips 64r2' Target Architecture Variant
+	      Select 'n64' Target ABI
+	      Disable 'Use soft-float'
+	    - MIPS64r2 - Little-Endian, Hard-Float, Legacy NaN, n64 ABI
+	      Select 'MIPS64 (little endian)' Target Architecture
+	      Select 'mips 64r2' Target Architecture Variant
+	      Select 'n64' Target ABI
+	      Disable 'Use soft-float'

toolchain/toolchain-external/toolchain-external-codescape-mti-mips/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "mips-mti-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-codescape-mti-mips"
+
+endif

toolchain/toolchain-external/toolchain-external-codescape-mti-mips/toolchain-external-codescape-mti-mips.hash

@@ -0,0 +1,4 @@
+# Codescape toolchains from MIPS Tech LLC
+# From: https://codescape.mips.com/components/toolchain/nanomips/2018.09-02/downloads.html
+sha256 c883a404fd7ea5718e2249a530802e223381f2be52265f88e9b1ce7035c232f3  Codescape.GNU.Tools.Package.2018.09-02.for.MIPS.MTI.Linux.CentOS-6.x86.tar.gz
+sha256 d6310a970b0a8a19ad8e0a2b3ead8c38ee90d0e284a9b2511200ce447f460d2c  Codescape.GNU.Tools.Package.2018.09-02.for.MIPS.MTI.Linux.CentOS-6.x86_64.tar.gz

toolchain/toolchain-external/toolchain-external-codescape-mti-mips/toolchain-external-codescape-mti-mips.mk

@@ -0,0 +1,51 @@
+################################################################################
+#
+# toolchain-external-codescape-mti-mips
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_VERSION = 2018.09-02
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_SITE = https://codescape.mips.com/components/toolchain/$(TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_VERSION)
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_STRIP_COMPONENTS = 2
+
+ifeq ($(HOSTARCH),x86)
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_SOURCE = Codescape.GNU.Tools.Package.$(TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_VERSION).for.MIPS.MTI.Linux.CentOS-6.x86.tar.gz
+else
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_SOURCE = Codescape.GNU.Tools.Package.$(TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_VERSION).for.MIPS.MTI.Linux.CentOS-6.x86_64.tar.gz
+endif
+
+# Special fixup for Codescape MIPS toolchains, that have bin-<abi> and
+# sbin-<abi> directories. We create symlinks bin -> bin-<abi> and sbin
+# -> sbin-<abi> so that the rest of Buildroot can find the toolchain
+# tools in the appropriate location.
+ifeq ($(BR2_MIPS_OABI32),y)
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_BIN_DIR_SUFFIX = o32
+else ifeq ($(BR2_MIPS_NABI32),y)
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_BIN_DIR_SUFFIX = n32
+else ifeq ($(BR2_MIPS_NABI64),y)
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_BIN_DIR_SUFFIX = n64
+endif
+
+define TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_STAGING_FIXUPS
+	rmdir $(STAGING_DIR)/usr/bin $(STAGING_DIR)/usr/sbin
+	ln -sf bin-$(TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_BIN_DIR_SUFFIX) $(STAGING_DIR)/usr/bin
+	ln -sf sbin-$(TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_BIN_DIR_SUFFIX) $(STAGING_DIR)/usr/sbin
+endef
+
+# The Codescape toolchain uses a sysroot layout that places them
+# side-by-side instead of nested like multilibs. A symlink is needed
+# much like for the nested sysroots which are handled in
+# copy_toolchain_sysroot but there is not enough information in there
+# to determine whether the sysroot layout was nested or side-by-side.
+# Add the symlink here for now.
+define TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_SYMLINK
+	$(Q)ARCH_SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))"; \
+	ARCH_SUBDIR=`basename $${ARCH_SYSROOT_DIR}`; \
+	ln -snf . $(STAGING_DIR)/$${ARCH_SUBDIR}
+endef
+
+TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_POST_INSTALL_STAGING_HOOKS += \
+	TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_STAGING_FIXUPS \
+	TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS_SYMLINK
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-codesourcery-aarch64/Config.in

@@ -0,0 +1,20 @@
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64
+	bool "CodeSourcery AArch64 2014.11"
+	depends on BR2_aarch64
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_5
+	# a57/a53 and a72/a53 appeared in gcc-6 or were broken before
+	depends on !BR2_cortex_a57_a53 && !BR2_cortex_a72_a53
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_HOSTARCH_NEEDS_IA32_LIBS
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+	help
+	  Sourcery CodeBench toolchain for the AArch64 architecture,
+	  from Mentor Graphics. It uses gcc 4.9.1, binutils
+	  2.24.51.20140217, glibc 2.20, gdb 7.7.50 and kernel headers
+	  3.16.2.

toolchain/toolchain-external/toolchain-external-codesourcery-aarch64/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "aarch64-amd-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-codesourcery-aarch64"
+
+endif

toolchain/toolchain-external/toolchain-external-codesourcery-aarch64/toolchain-external-codesourcery-aarch64.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 405aada821146755c5f2df566375c2a682456d6b8451ee47b88cf1a52b093676  aarch64-amd-2014.11-95-aarch64-amd-linux-gnu-i686-pc-linux-gnu.tar.bz2
+sha256 3f50dd6ee433eb5b6992a1071b988e50379a738f54f58722bc60081613764716  aarch64-amd-2014.11-95-aarch64-amd-linux-gnu.src.tar.bz2

toolchain/toolchain-external/toolchain-external-codesourcery-aarch64/toolchain-external-codesourcery-aarch64.mk

@@ -0,0 +1,12 @@
+################################################################################
+#
+# toolchain-external-codesourcery-aarch64
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_SITE = https://sourcery.mentor.com/public/gnu_toolchain/$(TOOLCHAIN_EXTERNAL_PREFIX)
+TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_VERSION = 2014.11-95
+TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_SOURCE = aarch64-amd-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX)-i686-pc-linux-gnu.tar.bz2
+TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_ACTUAL_SOURCE_TARBALL = aarch64-amd-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX).src.tar.bz2
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in

@@ -0,0 +1,37 @@
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM
+	bool "Sourcery CodeBench ARM 2014.05"
+	depends on BR2_arm
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on BR2_ARM_EABI
+	# Unsupported ARM cores
+	depends on !BR2_cortex_a12 && !BR2_cortex_a17 && !BR2_ARM_CPU_ARMV8A
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_HOSTARCH_NEEDS_IA32_LIBS
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+	help
+	  Sourcery CodeBench toolchain for the ARM architecture, from
+	  Mentor Graphics. It uses gcc 4.8.3, binutils 2.24.51, glibc
+	  2.18 and gdb 7.7.50, kernel headers 3.13. It has support
+	  for the following variants:
+	    - ARMv5TE, little endian, soft-float, glibc
+	      Select ARM926T, ARM10T, XScale or another ARMv5 core
+	      Select BR2_SOFT_FLOAT
+	    - ARMv4T, little endian, soft-float, glibc
+	      Select ARM720T, ARM920T, ARM922T or another ARMv4 core
+	      Select BR2_SOFT_FLOAT
+	    - ARMv7-A, Thumb 2, little endian, soft-float, glibc
+	      Select Cortex-A8, Cortex-A9 or another ARMv7-A core
+	      Select BR2_SOFT_FLOAT
+	      Set BR2_TARGET_OPTIMIZATION to -mthumb
+
+comment "Sourcery CodeBench toolchains available for the EABI ABI"
+	depends on BR2_arm
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9
+	depends on !BR2_ARM_EABI
+	depends on !BR2_STATIC_LIBS

toolchain/toolchain-external/toolchain-external-codesourcery-arm/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "arm-none-linux-gnueabi"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-codesourcery-arm"
+
+endif

toolchain/toolchain-external/toolchain-external-codesourcery-arm/toolchain-external-codesourcery-arm.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 39ee0e789034334ecc89af94e838e3a4815400ac5ff980f808f466b04778532e  arm-2014.05-29-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
+sha256 e16a5b1e41d7ff1e74161f9405182001bc8d1360d89564e73911032e6966cc0d  arm-2014.05-29-arm-none-linux-gnueabi.src.tar.bz2

toolchain/toolchain-external/toolchain-external-codesourcery-arm/toolchain-external-codesourcery-arm.mk

@@ -0,0 +1,13 @@
+################################################################################
+#
+# toolchain-external-codesourcery-arm
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM_VERSION = 2014.05-29
+
+TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM_SITE = https://sourcery.mentor.com/public/gnu_toolchain/$(TOOLCHAIN_EXTERNAL_PREFIX)
+TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM_SOURCE = arm-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX)-i686-pc-linux-gnu.tar.bz2
+TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM_ACTUAL_SOURCE_TARBALL = arm-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX).src.tar.bz2
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-codesourcery-mips/Config.in

@@ -0,0 +1,96 @@
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS
+	bool "Sourcery CodeBench MIPS 2016.05"
+	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
+	depends on BR2_MIPS_CPU_MIPS32R2 || BR2_MIPS_CPU_MIPS64R2
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_6
+	# Unsupported MIPS cores
+	depends on !BR2_mips_interaptiv
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on !BR2_MIPS_NABI32
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_HOSTARCH_NEEDS_IA32_LIBS
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
+	help
+	  Sourcery CodeBench toolchain for the MIPS architecture, from
+	  Mentor Graphics. It uses gcc 5.3, binutils 2.25.51, glibc
+	  2.23, uClibc 0.9.30 and gdb 7.10.50, kernel headers 4.4.1. It
+	  has support for the following variants:
+	    - MIPS32r2 - Big-Endian, 2008 NaN, O32
+	      Select MIPS (big endian) core
+	      Disable BR2_SOFT_FLOAT
+	      Set BR2_TARGET_OPTIMIZATION to -mnan=2008
+	    - MIPS32r2 - Big-Endian, O32
+	      Select MIPS (big endian) core
+	      Disable BR2_SOFT_FLOAT
+	    - MIPS32r2 - Big-Endian, O32, MIPS16
+	      Select MIPS (big endian) core
+	      Disable BR2_SOFT_FLOAT
+	      Set BR2_TARGET_OPTIMIZATION to -mips16
+	    - MIPS32r2 - Big-Endian, Soft-Float, O32
+	      Select MIPS (big endian) core
+	      Select BR2_SOFT_FLOAT
+	    - MIPS32r2 - Big-Endian, Soft-Float, O32, MIPS16
+	      Select MIPS (big endian) core
+	      Select BR2_SOFT_FLOAT
+	      Set BR2_TARGET_OPTIMIZATION to -mips16
+	    - MIPS32r2 - Little-Endian, 2008 NaN, O32
+	      Select MIPS (little endian) core
+	      Disable BR2_SOFT_FLOAT
+	      Set BR2_TARGET_OPTIMIZATION to -mnan=2008
+	    - MIPS32r2 - Little-Endian, O32
+	      Select MIPS (little endian) core
+	      Disable BR2_SOFT_FLOAT
+	    - MIPS32r2 - Little-Endian, O32, MIPS16
+	      Select MIPS (little endian) core
+	      Disable BR2_SOFT_FLOAT
+	      Set BR2_TARGET_OPTIMIZATION to -mips16
+	    - MIPS32r2 - Little-Endian, Soft-Float, O32
+	      Select MIPS (little endian) core
+	      Select BR2_SOFT_FLOAT
+	    - MIPS32r2 - Little-Endian, Soft-Float, O32, MIPS16
+	      Select MIPS (little endian) core
+	      Select BR2_SOFT_FLOAT
+	      Set BR2_TARGET_OPTIMIZATION to -mips16
+	    - MIPS32r2 - Little-Endian, Soft-Float, O32, microMIPS
+	      Select MIPS (little endian) core
+	      Select BR2_SOFT_FLOAT
+	      Set BR2_TARGET_OPTIMIZATION to -mmicromips
+	    - MIPS32r2 - uClibc, Big-Endian, 2008 NaN, O32
+	      Not usable in Buildroot yet.
+	    - MIPS32r2 - uClibc, Big-Endian, O32
+	      Not usable in Buildroot yet.
+	    - MIPS32r2 - uClibc, Big-Endian, Soft-Float, O32
+	      Not usable in Buildroot yet.
+	    - MIPS32r2 - uClibc, Little-Endian, 2008 NaN, O32
+	      Not usable in Buildroot yet.
+	    - MIPS32r2 - uClibc, Little-Endian, O32
+	      Not usable in Buildroot yet.
+	    - MIPS32r2 - uClibc, Little-Endian, Soft-Float, O32
+	      Not usable in Buildroot yet.
+	    - MIPS64r2 - Big-Endian, N64
+	      Select MIPS64 (big endian) core
+	      Select the n64 ABI
+	      Disable BR2_SOFT_FLOAT
+	    - MIPS64r2 - Big-Endian, Soft-Float, N64
+	      Select MIPS64 (big endian) core
+	      Select the n64 ABI
+	      Select BR2_SOFT_FLOAT
+	    - MIPS64r2 - Little-Endian, N64
+	      Select MIPS64 (little endian) core
+	      Select the n64 ABI
+	      Disable BR2_SOFT_FLOAT
+	    - MIPS64r2 - Little-Endian, Soft-Float, N64
+	      Select MIPS64 (little endian) core
+	      Select the n64 ABI
+	      Select BR2_SOFT_FLOAT
+
+comment "Sourcery CodeBench toolchains are only available for MIPS/MIPS64 o32 and n64"
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_6
+	depends on BR2_MIPS_NABI32
+	depends on !BR2_STATIC_LIBS

toolchain/toolchain-external/toolchain-external-codesourcery-mips/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "mips-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-codesourcery-mips"
+
+endif

toolchain/toolchain-external/toolchain-external-codesourcery-mips/toolchain-external-codesourcery-mips.hash

@@ -0,0 +1,3 @@
+# Locally computed
+sha256 d354447c4c5160439dafd5464fa3a0266dd41e79f973477238e4f0215a6b5397  mips-2016.05-8-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2
+sha256 2658e55d5b71bba25d6f77e868e18b200ea5f75c8add7ed3a9266e716d9adfff  mips-2016.05-8-mips-linux-gnu.src.tar.bz2

toolchain/toolchain-external/toolchain-external-codesourcery-mips/toolchain-external-codesourcery-mips.mk

@@ -0,0 +1,13 @@
+################################################################################
+#
+# toolchain-external-codesourcery-mips
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS_VERSION = 2016.05-8
+
+TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS_SITE = https://sourcery.mentor.com/public/gnu_toolchain/$(TOOLCHAIN_EXTERNAL_PREFIX)
+TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS_SOURCE = mips-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX)-i686-pc-linux-gnu.tar.bz2
+TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS_ACTUAL_SOURCE_TARBALL = mips-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX).src.tar.bz2
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-codesourcery-niosII/Config.in

@@ -0,0 +1,17 @@
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII
+	bool "Sourcery CodeBench Nios-II 2018.05"
+	depends on BR2_nios2
+	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_8
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_HOSTARCH_NEEDS_IA32_LIBS
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_7
+	help
+	  Sourcery CodeBench toolchain for the Nios-II architecture,
+	  from Mentor Graphics. It uses gcc 7.3, binutils 2.28,
+	  glibc 2.27, gdb 8.0.1 and kernel headers 4.15.5.

toolchain/toolchain-external/toolchain-external-codesourcery-niosII/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "nios2-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-codesourcery-niosII"
+
+endif

toolchain/toolchain-external/toolchain-external-codesourcery-niosII/toolchain-external-codesourcery-niosII.hash

@@ -0,0 +1,6 @@
+# From https://sourcery.mentor.com/GNUToolchain/release3374
+md5 4f536b3b9b4e00f483e82e304c0a27ae sourceryg++-2018.05-5-nios2-linux-gnu-i686-pc-linux-gnu.tar.bz2
+md5 be42ab83da2e8db7b73dc890c2549570 sourceryg++-2018.05-5-nios2-linux-gnu.src.tar.bz2
+# Locally calculated
+sha256 c19afb432b5b23f8d5d639831d3a423a3ea3c9cc62e0015020d20ea2eb36dd1b  sourceryg++-2018.05-5-nios2-linux-gnu-i686-pc-linux-gnu.tar.bz2
+sha256 d73a6364106dd62352711f932d3be8e97fdaaa548995678b5d38d9f21e22437a  sourceryg++-2018.05-5-nios2-linux-gnu.src.tar.bz2

toolchain/toolchain-external/toolchain-external-codesourcery-niosII/toolchain-external-codesourcery-niosII.mk

@@ -0,0 +1,13 @@
+################################################################################
+#
+# toolchain-external-codesourcery-niosII
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII_VERSION = 2018.05-5
+
+TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII_SITE = https://sourcery.mentor.com/public/gnu_toolchain/$(TOOLCHAIN_EXTERNAL_PREFIX)
+TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII_SOURCE = sourceryg++-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX)-i686-pc-linux-gnu.tar.bz2
+TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII_ACTUAL_SOURCE_TARBALL = sourceryg++-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX).src.tar.bz2
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-custom/Config.in

@@ -0,0 +1,5 @@
+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM
+	bool "Custom toolchain"
+	help
+	  Use this option to use a custom toolchain pre-installed on
+	  your system.

toolchain/toolchain-external/toolchain-external-custom/Config.in.options

@@ -0,0 +1,518 @@
+if BR2_TOOLCHAIN_EXTERNAL_CUSTOM
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-custom"
+
+config BR2_TOOLCHAIN_EXTERNAL_URL
+	string "Toolchain URL"
+	depends on BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD
+	help
+	  URL of the custom toolchain tarball to download and install.
+
+config BR2_TOOLCHAIN_EXTERNAL_REL_BIN_PATH
+	string "Toolchain relative binary path"
+	default "bin"
+	depends on BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD
+	help
+	  Path to where the binaries (e.g. the compiler) can be found,
+	  relative to the downloaded toolchain root directory. The
+	  default is "bin" and is correct for most toolchains.
+
+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX
+	string "Toolchain prefix"
+	default "$(ARCH)-linux"
+
+choice
+	bool "External toolchain gcc version"
+	help
+	  Set to the gcc version that is used by your external
+	  toolchain.
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_11
+	bool "11.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_11
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_10
+	bool "10.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_10
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_9
+	bool "9.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_9
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_8
+	bool "8.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_8
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_7
+	bool "7.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_7
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_6
+	bool "6.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_6
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_5
+	bool "5.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_4_9
+	bool "4.9.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_4_8
+	bool "4.8.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_4_7
+	bool "4.7.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_4_6
+	bool "4.6.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_4_5
+	bool "4.5.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_4_4
+	bool "4.4.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_4_3
+	bool "4.3.x"
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
+
+config BR2_TOOLCHAIN_EXTERNAL_GCC_OLD
+	bool "older"
+	help
+	  Use this option if your GCC version is older than any of the
+	  above.
+
+	  Note that the Buildroot community doesn't do any testing with
+	  such old toolchains. Some packages may fail to build in
+	  surprising ways, or the generated root filesystem may not
+	  work at all. Use such old toolchains at your own risk.
+
+endchoice
+
+comment "GCC older than 4.8 is not tested by Buildroot. Use at your own risk."
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+
+choice
+	bool "External toolchain kernel headers series"
+	default BR2_TOOLCHAIN_EXTERNAL_HEADERS_REALLY_OLD
+	help
+	  Set to the kernel headers version that were used to build
+	  this external toolchain.
+
+	  This is used to hide/show some packages that have strict
+	  requirements on the version of kernel headers.
+
+	  If unsure what version your toolchain is using, you can look
+	  at the value of LINUX_VERSION_CODE in linux/version.h in your
+	  toolchain. The Linux version is M.m.p, with:
+	    M = ( LINUX_VERSION_CODE >> 16 ) & 0xFF
+	    m = ( LINUX_VERSION_CODE >> 8  ) & 0xFF
+	    p = ( LINUX_VERSION_CODE >> 0  ) & 0xFF
+
+	  If your toolchain uses headers newer than the latest version
+	  in the choice, then select the latest version.
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_15
+	bool "5.15.x or later"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_15
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_14
+	bool "5.14.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_14
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_13
+	bool "5.13.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_13
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_12
+	bool "5.12.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_12
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_11
+	bool "5.11"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_11
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_10
+	bool "5.10.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_9
+	bool "5.9.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_9
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_8
+	bool "5.8.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_8
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_7
+	bool "5.7.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_6
+	bool "5.6.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_5
+	bool "5.5.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_4
+	bool "5.4.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_3
+	bool "5.3.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_2
+	bool "5.2.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_1
+	bool "5.1.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_0
+	bool "5.0.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_20
+	bool "4.20.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_19
+	bool "4.19.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_18
+	bool "4.18.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_17
+	bool "4.17.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_16
+	bool "4.16.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_15
+	bool "4.15.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_14
+	bool "4.14.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_13
+	bool "4.13.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12
+	bool "4.12.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_11
+	bool "4.11.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_10
+	bool "4.10.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_9
+	bool "4.9.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_8
+	bool "4.8.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_7
+	bool "4.7.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_6
+	bool "4.6.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_5
+	bool "4.5.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_4
+	bool "4.4.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_3
+	bool "4.3.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_2
+	bool "4.2.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_1
+	bool "4.1.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_0
+	bool "4.0.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_19
+	bool "3.19.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_18
+	bool "3.18.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_17
+	bool "3.17.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_16
+	bool "3.16.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_15
+	bool "3.15.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_14
+	bool "3.14.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_13
+	bool "3.13.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_12
+	bool "3.12.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_11
+	bool "3.11.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_10
+	bool "3.10.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_9
+	bool "3.9.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_8
+	bool "3.8.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_7
+	bool "3.7.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_6
+	bool "3.6.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_5
+	bool "3.5.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_4
+	bool "3.4.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_3
+	bool "3.3.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_2
+	bool "3.2.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_1
+	bool "3.1.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_0
+	bool "3.0.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
+
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_REALLY_OLD
+	bool "2.6.x"
+
+endchoice
+
+comment "Kernel headers older than 3.13 is not tested by Buildroot. Use at your own risk."
+	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
+
+choice
+	prompt "External toolchain C library"
+	default BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
+
+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
+	bool "uClibc/uClibc-ng"
+	select BR2_TOOLCHAIN_EXTERNAL_UCLIBC
+	help
+	  Select this option if your external toolchain uses the
+	  uClibc (available from http://www.uclibc.org/)
+	  or uClibc-ng (available from http://www.uclibc-ng.org)
+	  C library.
+
+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC
+	bool "glibc/eglibc"
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	help
+	  Select this option if your external toolchain uses the GNU C
+	  library (available from https://www.gnu.org/software/libc/)
+	  or its variant the eglibc library (http://www.eglibc.org/).
+
+	  Note: eglibc is a variant of glibc that (among other things)
+	  can be configured to exclude some of its features. Using a
+	  toolchain with eglibc configured to exclude key features may
+	  cause build failures to some packages.
+
+comment "(e)glibc only available with shared lib support"
+	depends on BR2_STATIC_LIBS
+
+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL
+	bool "musl (experimental)"
+	select BR2_TOOLCHAIN_EXTERNAL_MUSL
+	help
+	  Select this option if your external toolchain uses the
+	  'musl' C library, available from http://www.musl-libc.org/.
+
+endchoice
+
+if BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
+
+config BR2_TOOLCHAIN_EXTERNAL_WCHAR
+	bool "Toolchain has WCHAR support?"
+	select BR2_USE_WCHAR
+	help
+	  Select this option if your external toolchain supports
+	  WCHAR. If you don't know, leave the default value, Buildroot
+	  will tell you if it's correct or not.
+
+config BR2_TOOLCHAIN_EXTERNAL_LOCALE
+	bool "Toolchain has locale support?"
+	select BR2_TOOLCHAIN_EXTERNAL_WCHAR
+	select BR2_ENABLE_LOCALE
+	help
+	  Select this option if your external toolchain has locale
+	  support. If you don't know, leave the default value,
+	  Buildroot will tell you if it's correct or not.
+
+config BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS
+	bool "Toolchain has threads support?"
+	default y
+	select BR2_TOOLCHAIN_HAS_THREADS
+	help
+	  Select this option if your external toolchain has thread
+	  support. If you don't know, leave the default value,
+	  Buildroot will tell you if it's correct or not.
+
+if BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS
+
+config BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG
+	bool "Toolchain has threads debugging support?"
+	default y
+	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
+	help
+	  Select this option if your external toolchain has thread
+	  debugging support. If you don't know, leave the default
+	  value, Buildroot will tell you if it's correct or not.
+
+config BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL
+	bool "Toolchain has NPTL threads support?"
+	default y
+	select BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	help
+	  Select this option if your external toolchain uses the NPTL
+	  (Native Posix Thread Library) implementation of Posix
+	  threads. If you don't know, leave the default value,
+	  Buildroot will tell you if it's correct or not.
+
+endif # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS
+
+endif # BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
+
+config BR2_TOOLCHAIN_EXTERNAL_HAS_SSP
+	bool "Toolchain has SSP support?"
+	default y if BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	default y if BR2_TOOLCHAIN_EXTERNAL_MUSL
+	select BR2_TOOLCHAIN_HAS_SSP
+	help
+	  Select this option if your external toolchain has Stack
+	  Smashing Protection support enabled. If you don't know,
+	  leave the default value, Buildroot will tell you if it's
+	  correct or not.
+
+config BR2_TOOLCHAIN_EXTERNAL_HAS_SSP_STRONG
+	bool "Toolchain has SSP strong support?"
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 && BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 && BR2_TOOLCHAIN_EXTERNAL_MUSL
+	depends on BR2_TOOLCHAIN_EXTERNAL_HAS_SSP
+	select BR2_TOOLCHAIN_HAS_SSP_STRONG
+	help
+	  Select this option if your external toolchain has strong
+	  Stack Smashing Protection support enabled. If you don't
+	  know, leave the default value, Buildroot will tell you if
+	  it's correct or not.
+
+config BR2_TOOLCHAIN_EXTERNAL_INET_RPC
+	bool "Toolchain has RPC support?"
+	default y if BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	depends on !BR2_TOOLCHAIN_EXTERNAL_MUSL
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	help
+	  Select this option if your external toolchain supports
+	  RPC. If you don't know, leave the default value, Buildroot
+	  will tell you if it's correct or not.
+
+config BR2_TOOLCHAIN_EXTERNAL_CXX
+	bool "Toolchain has C++ support?"
+	select BR2_INSTALL_LIBSTDCPP
+	help
+	  Select this option if your external toolchain has C++
+	  support. If you don't know, leave the default value,
+	  Buildroot will tell you if it's correct or not.
+
+config BR2_TOOLCHAIN_EXTERNAL_DLANG
+	bool "Toolchain has D support?"
+	select BR2_TOOLCHAIN_HAS_DLANG
+	help
+	  Select this option if your external toolchain has D
+	  support.
+
+config BR2_TOOLCHAIN_EXTERNAL_FORTRAN
+	bool "Toolchain has Fortran support?"
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	help
+	  Select this option if your external toolchain has Fortran
+	  support. If you don't know, leave the default value,
+	  Buildroot will tell you if it's correct or not.
+
+config BR2_TOOLCHAIN_EXTERNAL_OPENMP
+	bool "Toolchain has OpenMP support?"
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Select this option if your external toolchain has OpenMP
+	  support. If you don't know, leave the default value,
+	  Buildroot will tell you if it's correct or not.
+
+endif

toolchain/toolchain-external/toolchain-external-custom/toolchain-external-custom.mk

@@ -0,0 +1,15 @@
+################################################################################
+#
+# toolchain-external-custom
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_CUSTOM_SITE = $(patsubst %/,%,$(dir $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_URL))))
+TOOLCHAIN_EXTERNAL_CUSTOM_SOURCE = $(notdir $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_URL)))
+
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CUSTOM),y)
+# We can't check hashes for custom downloaded toolchains
+BR_NO_CHECK_HASH_FOR += $(TOOLCHAIN_EXTERNAL_SOURCE)
+endif
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-linaro-aarch64-be/Config.in

@@ -0,0 +1,16 @@
+config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE
+	bool "Linaro AArch64 BE 2018.05"
+	depends on BR2_aarch64_be
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_7
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Toolchain for the AArch64 Big Endian architecture, from
+	  http://www.linaro.org/engineering/armv8/

toolchain/toolchain-external/toolchain-external-linaro-aarch64-be/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "aarch64_be-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-linaro-aarch64-be"
+
+endif

toolchain/toolchain-external/toolchain-external-linaro-aarch64-be/toolchain-external-linaro-aarch64-be.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 412da19c1d1bff0f3172bc19fd2c024207d8d716dbe7a8dad4bf9e3d6b71d149  gcc-linaro-7.3.1-2018.05-i686_aarch64_be-linux-gnu.tar.xz
+sha256 277c1483f8dbd6007c945ffeb706fa1ba1da8ec1c397cf5cf1e29c25081426e5  gcc-linaro-7.3.1-2018.05-x86_64_aarch64_be-linux-gnu.tar.xz

toolchain/toolchain-external/toolchain-external-linaro-aarch64-be/toolchain-external-linaro-aarch64-be.mk

@@ -0,0 +1,16 @@
+################################################################################
+#
+# toolchain-external-linaro-aarch64-be
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE_VERSION = 2018.05
+TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE_SITE = https://releases.linaro.org/components/toolchain/binaries/7.3-$(TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE_VERSION)/aarch64_be-linux-gnu
+
+ifeq ($(HOSTARCH),x86)
+TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE_SOURCE = gcc-linaro-7.3.1-$(TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE_VERSION)-i686_aarch64_be-linux-gnu.tar.xz
+else
+TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE_SOURCE = gcc-linaro-7.3.1-$(TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE_VERSION)-x86_64_aarch64_be-linux-gnu.tar.xz
+endif
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-linaro-aarch64/Config.in

@@ -0,0 +1,16 @@
+config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64
+	bool "Linaro AArch64 2018.05"
+	depends on BR2_aarch64
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_7
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Toolchain for the AArch64 architecture, from
+	  http://www.linaro.org/engineering/armv8/

toolchain/toolchain-external/toolchain-external-linaro-aarch64/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "aarch64-linux-gnu"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-linaro-aarch64"
+
+endif

toolchain/toolchain-external/toolchain-external-linaro-aarch64/toolchain-external-linaro-aarch64.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 466b801a60491ae1e2ce9952e0615cf04cf611596c6ffd5bfe8a89ef5be47e03  gcc-linaro-7.3.1-2018.05-i686_aarch64-linux-gnu.tar.xz
+sha256 73eed74e593e2267504efbcf3678918bb22409ab7afa3dc7c135d2c6790c2345  gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.tar.xz

toolchain/toolchain-external/toolchain-external-linaro-aarch64/toolchain-external-linaro-aarch64.mk

@@ -0,0 +1,16 @@
+################################################################################
+#
+# toolchain-external-linaro-aarch64
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_LINARO_AARCH64_VERSION = 2018.05
+TOOLCHAIN_EXTERNAL_LINARO_AARCH64_SITE = https://releases.linaro.org/components/toolchain/binaries/7.3-$(TOOLCHAIN_EXTERNAL_LINARO_AARCH64_VERSION)/aarch64-linux-gnu
+
+ifeq ($(HOSTARCH),x86)
+TOOLCHAIN_EXTERNAL_LINARO_AARCH64_SOURCE = gcc-linaro-7.3.1-$(TOOLCHAIN_EXTERNAL_LINARO_AARCH64_VERSION)-i686_aarch64-linux-gnu.tar.xz
+else
+TOOLCHAIN_EXTERNAL_LINARO_AARCH64_SOURCE = gcc-linaro-7.3.1-$(TOOLCHAIN_EXTERNAL_LINARO_AARCH64_VERSION)-x86_64_aarch64-linux-gnu.tar.xz
+endif
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-linaro-arm/Config.in

@@ -0,0 +1,28 @@
+comment "Linaro toolchains available for Cortex-A + EABIhf"
+	depends on BR2_arm
+	depends on !BR2_ARM_CPU_ARMV7A || !BR2_ARM_EABIHF
+	depends on !BR2_STATIC_LIBS
+
+config BR2_TOOLCHAIN_EXTERNAL_LINARO_ARM
+	bool "Linaro ARM 2018.05"
+	depends on BR2_arm
+	depends on BR2_ARM_CPU_ARMV7A || BR2_ARM_CPU_ARMV8A
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on BR2_ARM_EABIHF
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_7
+	select BR2_TOOLCHAIN_HAS_FORTRAN
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	help
+	  Linaro toolchain for the ARM architecture. It uses Linaro
+	  GCC 2018.05 (based on gcc 7.3.1), Linaro GDB 2018.05 (based on
+	  GDB 8.1), glibc 2.25, Binutils 2018.05 (based on 2.28). It
+	  generates code that runs on all Cortex-A profile devices,
+	  but tuned for the Cortex-A9. The code generated is Thumb 2,
+	  with the hard floating point calling convention, and uses
+	  the VFPv3-D16 FPU instructions.

toolchain/toolchain-external/toolchain-external-linaro-arm/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_LINARO_ARM
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "arm-linux-gnueabihf"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-linaro-arm"
+
+endif

toolchain/toolchain-external/toolchain-external-linaro-arm/toolchain-external-linaro-arm.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 0613b5be14eb7d50a772bbd72069c428558e6e53fa5fce7201d75a13a475ffff  gcc-linaro-7.3.1-2018.05-i686_arm-linux-gnueabihf.tar.xz
+sha256 7248bf105d0d468887a9b8a7120bb281ac8ad0223d9cb3d00dc7c2d498485d91  gcc-linaro-7.3.1-2018.05-x86_64_arm-linux-gnueabihf.tar.xz

toolchain/toolchain-external/toolchain-external-linaro-arm/toolchain-external-linaro-arm.mk

@@ -0,0 +1,16 @@
+################################################################################
+#
+# toolchain-external-linaro-arm
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_LINARO_ARM_VERSION = 2018.05
+TOOLCHAIN_EXTERNAL_LINARO_ARM_SITE = https://releases.linaro.org/components/toolchain/binaries/7.3-$(TOOLCHAIN_EXTERNAL_LINARO_ARM_VERSION)/arm-linux-gnueabihf
+
+ifeq ($(HOSTARCH),x86)
+TOOLCHAIN_EXTERNAL_LINARO_ARM_SOURCE = gcc-linaro-7.3.1-$(TOOLCHAIN_EXTERNAL_LINARO_ARM_VERSION)-i686_arm-linux-gnueabihf.tar.xz
+else
+TOOLCHAIN_EXTERNAL_LINARO_ARM_SOURCE = gcc-linaro-7.3.1-$(TOOLCHAIN_EXTERNAL_LINARO_ARM_VERSION)-x86_64_arm-linux-gnueabihf.tar.xz
+endif
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-linaro-armeb/Config.in

@@ -0,0 +1,27 @@
+comment "Linaro toolchains available for Cortex-A + EABIhf"
+	depends on BR2_armeb
+	depends on !BR2_ARM_CPU_ARMV7A || !BR2_ARM_EABIHF
+	depends on !BR2_STATIC_LIBS
+
+config BR2_TOOLCHAIN_EXTERNAL_LINARO_ARMEB
+	bool "Linaro armeb 2018.05"
+	depends on BR2_armeb
+	depends on BR2_ARM_CPU_ARMV7A || BR2_ARM_CPU_ARMV8A
+	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	depends on BR2_ARM_EABIHF
+	depends on !BR2_STATIC_LIBS
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	select BR2_TOOLCHAIN_HAS_OPENMP
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_7
+	help
+	  Linaro toolchain for the ARM big endian architecture. It
+	  uses Linaro GCC 2018.05 (based on gcc 7.3.1), Linaro GDB
+	  2018.05 (based on GDB 8.1), glibc 2.25, Binutils 2018.05
+	  (based on 2.28). It generates code that runs on all Cortex-A
+	  profile devices, but tuned for the Cortex-A9. The code
+	  generated is Thumb 2, with the hard floating point calling
+	  convention, and uses the VFPv3-D16 FPU instructions.

toolchain/toolchain-external/toolchain-external-linaro-armeb/Config.in.options

@@ -0,0 +1,9 @@
+if BR2_TOOLCHAIN_EXTERNAL_LINARO_ARMEB
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "armeb-linux-gnueabihf"
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-linaro-armeb"
+
+endif

toolchain/toolchain-external/toolchain-external-linaro-armeb/toolchain-external-linaro-armeb.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 60bf9924a0c039c94deb85cb9b129d0f28b28eadbb1fb3f7e2e227679cc43fc9  gcc-linaro-7.3.1-2018.05-i686_armeb-linux-gnueabihf.tar.xz
+sha256 c1bbd598b78458d6b7ea1c971fddf736c00d57890c7131fdafd4e789289c42f9  gcc-linaro-7.3.1-2018.05-x86_64_armeb-linux-gnueabihf.tar.xz

toolchain/toolchain-external/toolchain-external-linaro-armeb/toolchain-external-linaro-armeb.mk

@@ -0,0 +1,17 @@
+################################################################################
+#
+# toolchain-external-linaro-armeb
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_LINARO_ARMEB_VERSION = 2018.05
+
+TOOLCHAIN_EXTERNAL_LINARO_ARMEB_SITE = https://releases.linaro.org/components/toolchain/binaries/7.3-$(TOOLCHAIN_EXTERNAL_LINARO_ARMEB_VERSION)/armeb-linux-gnueabihf
+
+ifeq ($(HOSTARCH),x86)
+TOOLCHAIN_EXTERNAL_LINARO_ARMEB_SOURCE = gcc-linaro-7.3.1-$(TOOLCHAIN_EXTERNAL_LINARO_ARMEB_VERSION)-i686_armeb-linux-gnueabihf.tar.xz
+else
+TOOLCHAIN_EXTERNAL_LINARO_ARMEB_SOURCE = gcc-linaro-7.3.1-$(TOOLCHAIN_EXTERNAL_LINARO_ARMEB_VERSION)-x86_64_armeb-linux-gnueabihf.tar.xz
+endif
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external-synopsys-arc/Config.in

@@ -0,0 +1,17 @@
+config BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC
+	bool "Synopsys ARC 2019.09 toolchain"
+	depends on BR2_arc
+	depends on BR2_HOSTARCH = "x86_64"
+	select BR2_TOOLCHAIN_EXTERNAL_UCLIBC
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_ENABLE_LOCALE
+	select BR2_USE_WCHAR
+	select BR2_TOOLCHAIN_HAS_THREADS
+	select BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
+	select BR2_TOOLCHAIN_HAS_SSP
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
+	select BR2_TOOLCHAIN_GCC_AT_LEAST_9
+	help
+	  Toolchain for the ARC cores, from
+	  https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases

toolchain/toolchain-external/toolchain-external-synopsys-arc/Config.in.options

@@ -0,0 +1,10 @@
+if BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC
+
+config BR2_TOOLCHAIN_EXTERNAL_PREFIX
+	default "arc-linux"		 if BR2_arcle
+	default "arceb-linux"		 if BR2_arceb
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+	default "toolchain-external-synopsys-arc"
+
+endif

toolchain/toolchain-external/toolchain-external-synopsys-arc/toolchain-external-synopsys-arc.hash

@@ -0,0 +1,5 @@
+# From https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/tag/arc-2019.09-release
+sha256 f7cbf68ef251943db7baf63535e0ec98dafbdf5d925017b4e1d4fc64d9b38a26  arc_gnu_2019.09_prebuilt_uclibc_le_arc700_linux_install.tar.gz
+sha256 ac09f0a21f9d50146a5e542f4a6abc93e5a1dcb0a1372cb5c3ba86bbefaaec7d  arc_gnu_2019.09_prebuilt_uclibc_be_arc700_linux_install.tar.gz
+sha256 245ca49fe8ea2456617541b18bb96e52e6c0dc619f00e293fcaad519fc436c35  arc_gnu_2019.09_prebuilt_uclibc_le_archs_linux_install.tar.gz
+sha256 6f039a0158c03af398ada31fae96009e47f0d7b7f7d52e12eb419492fc3f27e7  arc_gnu_2019.09_prebuilt_uclibc_be_archs_linux_install.tar.gz

toolchain/toolchain-external/toolchain-external-synopsys-arc/toolchain-external-synopsys-arc.mk

@@ -0,0 +1,24 @@
+################################################################################
+#
+# toolchain-external-synopsys-arc
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_VERSION = 2019.09
+TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_SITE = https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/download/arc-$(TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_VERSION)-release
+
+ifeq ($(BR2_arc750d)$(BR2_arc770d),y)
+TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_CORE = arc700
+else
+TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_CORE = archs
+endif
+
+ifeq ($(BR2_arcle),y)
+TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_ENDIANESS = le
+else
+TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_ENDIANESS = be
+endif
+
+TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_SOURCE = arc_gnu_$(TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_VERSION)_prebuilt_uclibc_$(TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_ENDIANESS)_$(TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC_CORE)_linux_install.tar.gz
+
+$(eval $(toolchain-external-package))

toolchain/toolchain-external/toolchain-external.mk

@@ -0,0 +1,28 @@
+################################################################################
+#
+# toolchain-external
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_ADD_TOOLCHAIN_DEPENDENCY = NO
+
+# musl does not provide an implementation for sys/queue.h or sys/cdefs.h.
+# So, add the musl-compat-headers package that will install those files,
+# into the staging directory:
+#   sys/queue.h:  header from NetBSD
+#   sys/cdefs.h:  minimalist header bundled in Buildroot
+ifeq ($(BR2_TOOLCHAIN_USES_MUSL),y)
+TOOLCHAIN_EXTERNAL_DEPENDENCIES += musl-compat-headers
+endif
+
+$(eval $(virtual-package))
+
+# Ensure the external-toolchain package has a prefix defined.
+# This comes after the virtual-package definition, which checks the provider.
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL),y)
+ifeq ($(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX)),)
+$(error No prefix selected for external toolchain package $(BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL). Configuration error)
+endif
+endif
+
+include $(sort $(wildcard toolchain/toolchain-external/*/*.mk))

toolchain/toolchain-wrapper.c

@@ -0,0 +1,553 @@
+/**
+ * Buildroot wrapper for toolchains. This simply executes the real toolchain
+ * with a number of arguments (sysroot/arch/..) hardcoded, to ensure the
+ * toolchain uses the correct configuration.
+ * The hardcoded path arguments are defined relative to the actual location
+ * of the binary.
+ *
+ * (C) 2011 Peter Korsgaard <jacmet@sunsite.dk>
+ * (C) 2011 Daniel Nyström <daniel.nystrom@timeterminal.se>
+ * (C) 2012 Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
+ * (C) 2013 Spenser Gilliland <spenser@gillilanding.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <time.h>
+#include <stdbool.h>
+
+#ifdef BR_CCACHE
+static char ccache_path[PATH_MAX];
+#endif
+static char path[PATH_MAX];
+static char sysroot[PATH_MAX];
+/* As would be defined by gcc:
+ *   https://gcc.gnu.org/onlinedocs/cpp/Standard-Predefined-Macros.html
+ * sizeof() on string literals includes the terminating \0. */
+static char _time_[sizeof("-D__TIME__=\"HH:MM:SS\"")];
+static char _date_[sizeof("-D__DATE__=\"MMM DD YYYY\"")];
+
+/**
+ * GCC errors out with certain combinations of arguments (examples are
+ * -mfloat-abi={hard|soft} and -m{little|big}-endian), so we have to ensure
+ * that we only pass the predefined one to the real compiler if the inverse
+ * option isn't in the argument list.
+ * This specifies the worst case number of extra arguments we might pass
+ * Currently, we may have:
+ * 	-mfloat-abi=
+ * 	-march=
+ * 	-mcpu=
+ * 	-D__TIME__=
+ * 	-D__DATE__=
+ * 	-Wno-builtin-macro-redefined
+ * 	-Wl,-z,now
+ * 	-Wl,-z,relro
+ * 	-fPIE
+ * 	-pie
+ */
+#define EXCLUSIVE_ARGS	10
+
+static char *predef_args[] = {
+#ifdef BR_CCACHE
+	ccache_path,
+#endif
+	path,
+	"--sysroot", sysroot,
+#ifdef BR_ABI
+	"-mabi=" BR_ABI,
+#endif
+#ifdef BR_NAN
+	"-mnan=" BR_NAN,
+#endif
+#ifdef BR_FPU
+	"-mfpu=" BR_FPU,
+#endif
+#ifdef BR_SOFTFLOAT
+	"-msoft-float",
+#endif /* BR_SOFTFLOAT */
+#ifdef BR_MODE
+	"-m" BR_MODE,
+#endif
+#ifdef BR_64
+	"-m64",
+#endif
+#ifdef BR_OMIT_LOCK_PREFIX
+	"-Wa,-momit-lock-prefix=yes",
+#endif
+#ifdef BR_NO_FUSED_MADD
+	"-mno-fused-madd",
+#endif
+#ifdef BR_FP_CONTRACT_OFF
+	"-ffp-contract=off",
+#endif
+#ifdef BR_BINFMT_FLAT
+	"-Wl,-elf2flt",
+#endif
+#ifdef BR_MIPS_TARGET_LITTLE_ENDIAN
+	"-EL",
+#endif
+#if defined(BR_MIPS_TARGET_BIG_ENDIAN) || defined(BR_ARC_TARGET_BIG_ENDIAN)
+	"-EB",
+#endif
+#ifdef BR_ADDITIONAL_CFLAGS
+	BR_ADDITIONAL_CFLAGS
+#endif
+};
+
+/* A {string,length} tuple, to avoid computing strlen() on constants.
+ *  - str must be a \0-terminated string
+ *  - len does not account for the terminating '\0'
+ */
+struct str_len_s {
+	const char *str;
+	size_t     len;
+};
+
+/* Define a {string,length} tuple. Takes an unquoted constant string as
+ * parameter. sizeof() on a string literal includes the terminating \0,
+ * but we don't want to count it.
+ */
+#define STR_LEN(s) { #s, sizeof(#s)-1 }
+
+/* List of paths considered unsafe for cross-compilation.
+ *
+ * An unsafe path is one that points to a directory with libraries or
+ * headers for the build machine, which are not suitable for the target.
+ */
+static const struct str_len_s unsafe_paths[] = {
+	STR_LEN(/lib),
+	STR_LEN(/usr/include),
+	STR_LEN(/usr/lib),
+	STR_LEN(/usr/local/include),
+	STR_LEN(/usr/local/lib),
+	STR_LEN(/usr/X11R6/include),
+	STR_LEN(/usr/X11R6/lib),
+	{ NULL, 0 },
+};
+
+/* Unsafe options are options that specify a potentialy unsafe path,
+ * that will be checked by check_unsafe_path(), below.
+ */
+static const struct str_len_s unsafe_opts[] = {
+	STR_LEN(-I),
+	STR_LEN(-idirafter),
+	STR_LEN(-iquote),
+	STR_LEN(-isystem),
+	STR_LEN(-L),
+	{ NULL, 0 },
+};
+
+/* Check if path is unsafe for cross-compilation. Unsafe paths are those
+ * pointing to the standard native include or library paths.
+ *
+ * We print the arguments leading to the failure. For some options, gcc
+ * accepts the path to be concatenated to the argument (e.g. -I/foo/bar)
+ * or separated (e.g. -I /foo/bar). In the first case, we need only print
+ * the argument as it already contains the path (arg_has_path), while in
+ * the second case we need to print both (!arg_has_path).
+ *
+ * If paranoid, exit in error instead of just printing a warning.
+ */
+static void check_unsafe_path(const char *arg,
+			      const char *path,
+			      int paranoid,
+			      int arg_has_path)
+{
+	const struct str_len_s *p;
+
+	for (p=unsafe_paths; p->str; p++) {
+		if (strncmp(path, p->str, p->len))
+			continue;
+		fprintf(stderr,
+			"%s: %s: unsafe header/library path used in cross-compilation: '%s%s%s'\n",
+			program_invocation_short_name,
+			paranoid ? "ERROR" : "WARNING",
+			arg,
+			arg_has_path ? "" : "' '", /* close single-quote, space, open single-quote */
+			arg_has_path ? "" : path); /* so that arg and path are properly quoted. */
+		if (paranoid)
+			exit(1);
+	}
+}
+
+#ifdef BR_NEED_SOURCE_DATE_EPOCH
+/* Returns false if SOURCE_DATE_EPOCH was not defined in the environment.
+ *
+ * Returns true if SOURCE_DATE_EPOCH is in the environment and represent
+ * a valid timestamp, in which case the timestamp is formatted into the
+ * global variables _date_ and _time_.
+ *
+ * Aborts if SOURCE_DATE_EPOCH was set in the environment but did not
+ * contain a valid timestamp.
+ *
+ * Valid values are defined in the spec:
+ *     https://reproducible-builds.org/specs/source-date-epoch/
+ * but we further restrict them to be positive or null.
+ */
+bool parse_source_date_epoch_from_env(void)
+{
+	char *epoch_env, *endptr;
+	time_t epoch;
+	struct tm epoch_tm;
+
+	if ((epoch_env = getenv("SOURCE_DATE_EPOCH")) == NULL)
+		return false;
+	errno = 0;
+	epoch = (time_t) strtoll(epoch_env, &endptr, 10);
+	/* We just need to test if it is incorrect, but we do not
+	 * care why it is incorrect.
+	 */
+	if ((errno != 0) || !*epoch_env || *endptr || (epoch < 0)) {
+		fprintf(stderr, "%s: invalid SOURCE_DATE_EPOCH='%s'\n",
+			program_invocation_short_name,
+			epoch_env);
+		exit(1);
+	}
+	tzset(); /* For localtime_r(), below. */
+	if (localtime_r(&epoch, &epoch_tm) == NULL) {
+		fprintf(stderr, "%s: cannot parse SOURCE_DATE_EPOCH=%s\n",
+				program_invocation_short_name,
+				getenv("SOURCE_DATE_EPOCH"));
+		exit(1);
+	}
+	if (!strftime(_time_, sizeof(_time_), "-D__TIME__=\"%T\"", &epoch_tm)) {
+		fprintf(stderr, "%s: cannot set time from SOURCE_DATE_EPOCH=%s\n",
+				program_invocation_short_name,
+				getenv("SOURCE_DATE_EPOCH"));
+		exit(1);
+	}
+	if (!strftime(_date_, sizeof(_date_), "-D__DATE__=\"%b %e %Y\"", &epoch_tm)) {
+		fprintf(stderr, "%s: cannot set date from SOURCE_DATE_EPOCH=%s\n",
+				program_invocation_short_name,
+				getenv("SOURCE_DATE_EPOCH"));
+		exit(1);
+	}
+	return true;
+}
+#else
+bool parse_source_date_epoch_from_env(void)
+{
+	/* The compiler is recent enough to handle SOURCE_DATE_EPOCH itself
+	 * so we do not need to do anything here.
+	 */
+	return false;
+}
+#endif
+
+int main(int argc, char **argv)
+{
+	char **args, **cur, **exec_args;
+	char *relbasedir, *absbasedir;
+	char *progpath = argv[0];
+	char *basename;
+	char *env_debug;
+	char *paranoid_wrapper;
+	int paranoid;
+	int ret, i, count = 0, debug = 0, found_shared = 0;
+
+	/* Debug the wrapper to see arguments it was called with.
+	 * If environment variable BR2_DEBUG_WRAPPER is:
+	 * unset, empty, or 0: do not trace
+	 * set to 1          : trace all arguments on a single line
+	 * set to 2          : trace one argument per line
+	 */
+	if ((env_debug = getenv("BR2_DEBUG_WRAPPER"))) {
+		debug = atoi(env_debug);
+	}
+	if (debug > 0) {
+		fprintf(stderr, "Toolchain wrapper was called with:");
+		for (i = 0; i < argc; i++)
+			fprintf(stderr, "%s'%s'",
+				(debug == 2) ? "\n    " : " ", argv[i]);
+		fprintf(stderr, "\n");
+	}
+
+	/* Calculate the relative paths */
+	basename = strrchr(progpath, '/');
+	if (basename) {
+		*basename = '\0';
+		basename++;
+		relbasedir = malloc(strlen(progpath) + 7);
+		if (relbasedir == NULL) {
+			perror(__FILE__ ": malloc");
+			return 2;
+		}
+		sprintf(relbasedir, "%s/..", argv[0]);
+		absbasedir = realpath(relbasedir, NULL);
+	} else {
+		basename = progpath;
+		absbasedir = malloc(PATH_MAX + 1);
+		ret = readlink("/proc/self/exe", absbasedir, PATH_MAX);
+		if (ret < 0) {
+			perror(__FILE__ ": readlink");
+			return 2;
+		}
+		absbasedir[ret] = '\0';
+		for (i = ret; i > 0; i--) {
+			if (absbasedir[i] == '/') {
+				absbasedir[i] = '\0';
+				if (++count == 2)
+					break;
+			}
+		}
+	}
+	if (absbasedir == NULL) {
+		perror(__FILE__ ": realpath");
+		return 2;
+	}
+
+	/* Fill in the relative paths */
+#ifdef BR_CROSS_PATH_REL
+	ret = snprintf(path, sizeof(path), "%s/" BR_CROSS_PATH_REL "/%s" BR_CROSS_PATH_SUFFIX, absbasedir, basename);
+#elif defined(BR_CROSS_PATH_ABS)
+	ret = snprintf(path, sizeof(path), BR_CROSS_PATH_ABS "/%s" BR_CROSS_PATH_SUFFIX, basename);
+#else
+	ret = snprintf(path, sizeof(path), "%s/bin/%s" BR_CROSS_PATH_SUFFIX, absbasedir, basename);
+#endif
+	if (ret >= sizeof(path)) {
+		perror(__FILE__ ": overflow");
+		return 3;
+	}
+#ifdef BR_CCACHE
+	ret = snprintf(ccache_path, sizeof(ccache_path), "%s/bin/ccache", absbasedir);
+	if (ret >= sizeof(ccache_path)) {
+		perror(__FILE__ ": overflow");
+		return 3;
+	}
+#endif
+	ret = snprintf(sysroot, sizeof(sysroot), "%s/" BR_SYSROOT, absbasedir);
+	if (ret >= sizeof(sysroot)) {
+		perror(__FILE__ ": overflow");
+		return 3;
+	}
+
+	cur = args = malloc(sizeof(predef_args) +
+			    (sizeof(char *) * (argc + EXCLUSIVE_ARGS)));
+	if (args == NULL) {
+		perror(__FILE__ ": malloc");
+		return 2;
+	}
+
+	/* start with predefined args */
+	memcpy(cur, predef_args, sizeof(predef_args));
+	cur += sizeof(predef_args) / sizeof(predef_args[0]);
+
+#ifdef BR_FLOAT_ABI
+	/* add float abi if not overridden in args */
+	for (i = 1; i < argc; i++) {
+		if (!strncmp(argv[i], "-mfloat-abi=", strlen("-mfloat-abi=")) ||
+		    !strcmp(argv[i], "-msoft-float") ||
+		    !strcmp(argv[i], "-mhard-float"))
+			break;
+	}
+
+	if (i == argc)
+		*cur++ = "-mfloat-abi=" BR_FLOAT_ABI;
+#endif
+
+#ifdef BR_FP32_MODE
+	/* add fp32 mode if soft-float is not args or hard-float overrides soft-float */
+	int add_fp32_mode = 1;
+	for (i = 1; i < argc; i++) {
+		if (!strcmp(argv[i], "-msoft-float"))
+			add_fp32_mode = 0;
+		else if (!strcmp(argv[i], "-mhard-float"))
+			add_fp32_mode = 1;
+	}
+
+	if (add_fp32_mode == 1)
+		*cur++ = "-mfp" BR_FP32_MODE;
+#endif
+
+#if defined(BR_ARCH) || \
+    defined(BR_CPU)
+	/* Add our -march/cpu flags, but only if none of
+	 * -march/mtune/mcpu are already specified on the commandline
+	 */
+	for (i = 1; i < argc; i++) {
+		if (!strncmp(argv[i], "-march=", strlen("-march=")) ||
+		    !strncmp(argv[i], "-mtune=", strlen("-mtune=")) ||
+		    !strncmp(argv[i], "-mcpu=",  strlen("-mcpu=" )))
+			break;
+	}
+	if (i == argc) {
+#ifdef BR_ARCH
+		*cur++ = "-march=" BR_ARCH;
+#endif
+#ifdef BR_CPU
+		*cur++ = "-mcpu=" BR_CPU;
+#endif
+	}
+#endif /* ARCH || CPU */
+
+	if (parse_source_date_epoch_from_env()) {
+		*cur++ = _time_;
+		*cur++ = _date_;
+		/* This has existed since gcc-4.4.0. */
+		*cur++ = "-Wno-builtin-macro-redefined";
+	}
+
+#ifdef BR2_PIC_PIE
+	/* Patterned after Fedora/Gentoo hardening approaches.
+	 * https://fedoraproject.org/wiki/Changes/Harden_All_Packages
+	 * https://wiki.gentoo.org/wiki/Hardened/Toolchain#Position_Independent_Executables_.28PIEs.29
+	 *
+	 * A few checks are added to allow disabling of PIE
+	 * 1) -fno-pie and -no-pie are used by other distros to disable PIE in
+	 *    cases where the compiler enables it by default. The logic below
+	 *    maintains that behavior.
+	 *         Ref: https://wiki.ubuntu.com/SecurityTeam/PIE
+	 * 2) A check for -fno-PIE has been used in older Linux Kernel builds
+	 *    in a similar way to -fno-pie or -no-pie.
+	 * 3) A check is added for Kernel and U-boot defines
+	 *    (-D__KERNEL__ and -D__UBOOT__).
+	 */
+	for (i = 1; i < argc; i++) {
+		/* Apply all incompatible link flag and disable checks first */
+		if (!strcmp(argv[i], "-r") ||
+		    !strcmp(argv[i], "-Wl,-r") ||
+		    !strcmp(argv[i], "-static") ||
+		    !strcmp(argv[i], "-D__KERNEL__") ||
+		    !strcmp(argv[i], "-D__UBOOT__") ||
+		    !strcmp(argv[i], "-fno-pie") ||
+		    !strcmp(argv[i], "-fno-PIE") ||
+		    !strcmp(argv[i], "-no-pie"))
+			break;
+		/* Record that shared was present which disables -pie but don't
+		 * break out of loop as a check needs to occur that possibly
+		 * still allows -fPIE to be set
+		 */
+		if (!strcmp(argv[i], "-shared"))
+			found_shared = 1;
+	}
+
+	if (i == argc) {
+		/* Compile and link condition checking have been kept split
+		 * between these two loops, as there maybe already are valid
+		 * compile flags set for position independence. In that case
+		 * the wrapper just adds the -pie for link.
+		 */
+		for (i = 1; i < argc; i++) {
+			if (!strcmp(argv[i], "-fpie") ||
+			    !strcmp(argv[i], "-fPIE") ||
+			    !strcmp(argv[i], "-fpic") ||
+			    !strcmp(argv[i], "-fPIC"))
+				break;
+		}
+		/* Both args below can be set at compile/link time
+		 * and are ignored correctly when not used
+		 */
+		if (i == argc)
+			*cur++ = "-fPIE";
+
+		if (!found_shared)
+			*cur++ = "-pie";
+	}
+#endif
+	/* Are we building the Linux Kernel or U-Boot? */
+	for (i = 1; i < argc; i++) {
+		if (!strcmp(argv[i], "-D__KERNEL__") ||
+		    !strcmp(argv[i], "-D__UBOOT__"))
+			break;
+	}
+	if (i == argc) {
+		/* https://wiki.gentoo.org/wiki/Hardened/Toolchain#Mark_Read-Only_Appropriate_Sections */
+#ifdef BR2_RELRO_PARTIAL
+		*cur++ = "-Wl,-z,relro";
+#endif
+#ifdef BR2_RELRO_FULL
+		*cur++ = "-Wl,-z,now";
+		*cur++ = "-Wl,-z,relro";
+#endif
+	}
+
+	paranoid_wrapper = getenv("BR_COMPILER_PARANOID_UNSAFE_PATH");
+	if (paranoid_wrapper && strlen(paranoid_wrapper) > 0)
+		paranoid = 1;
+	else
+		paranoid = 0;
+
+	/* Check for unsafe library and header paths */
+	for (i = 1; i < argc; i++) {
+		const struct str_len_s *opt;
+		for (opt=unsafe_opts; opt->str; opt++ ) {
+			/* Skip any non-unsafe option. */
+			if (strncmp(argv[i], opt->str, opt->len))
+				continue;
+
+			/* Handle both cases:
+			 *  - path is a separate argument,
+			 *  - path is concatenated with option.
+			 */
+			if (argv[i][opt->len] == '\0') {
+				i++;
+				if (i == argc)
+					break;
+				check_unsafe_path(argv[i-1], argv[i], paranoid, 0);
+			} else
+				check_unsafe_path(argv[i], argv[i] + opt->len, paranoid, 1);
+		}
+	}
+
+	/* append forward args */
+	memcpy(cur, &argv[1], sizeof(char *) * (argc - 1));
+	cur += argc - 1;
+
+	/* finish with NULL termination */
+	*cur = NULL;
+
+	exec_args = args;
+#ifdef BR_CCACHE
+	if (getenv("BR_NO_CCACHE"))
+		/* Skip the ccache call */
+		exec_args++;
+#endif
+
+	/* Debug the wrapper to see final arguments passed to the real compiler. */
+	if (debug > 0) {
+		fprintf(stderr, "Toolchain wrapper executing:");
+#ifdef BR_CCACHE_HASH
+		fprintf(stderr, "%sCCACHE_COMPILERCHECK='string:" BR_CCACHE_HASH "'",
+			(debug == 2) ? "\n    " : " ");
+#endif
+#ifdef BR_CCACHE_BASEDIR
+		fprintf(stderr, "%sCCACHE_BASEDIR='" BR_CCACHE_BASEDIR "'",
+			(debug == 2) ? "\n    " : " ");
+#endif
+		for (i = 0; exec_args[i]; i++)
+			fprintf(stderr, "%s'%s'",
+				(debug == 2) ? "\n    " : " ", exec_args[i]);
+		fprintf(stderr, "\n");
+	}
+
+#ifdef BR_CCACHE_HASH
+	/* Allow compilercheck to be overridden through the environment */
+	if (setenv("CCACHE_COMPILERCHECK", "string:" BR_CCACHE_HASH, 0)) {
+		perror(__FILE__ ": Failed to set CCACHE_COMPILERCHECK");
+		return 3;
+	}
+#endif
+#ifdef BR_CCACHE_BASEDIR
+	/* Allow compilercheck to be overridden through the environment */
+	if (setenv("CCACHE_BASEDIR", BR_CCACHE_BASEDIR, 0)) {
+		perror(__FILE__ ": Failed to set CCACHE_BASEDIR");
+		return 3;
+	}
+#endif
+
+	if (execv(exec_args[0], exec_args))
+		perror(path);
+
+	free(args);
+
+	return 2;
+}

toolchain/toolchain-wrapper.mk

@@ -0,0 +1,92 @@
+################################################################################
+#
+# definition of the toolchain wrapper build commands
+#
+################################################################################
+
+# We use --hash-style=both to increase the compatibility of the generated
+# binary with older platforms, except for MIPS, where the only acceptable
+# hash style is 'sysv'
+ifeq ($(findstring mips,$(HOSTARCH)),mips)
+TOOLCHAIN_WRAPPER_HASH_STYLE = sysv
+else
+TOOLCHAIN_WRAPPER_HASH_STYLE = both
+endif
+
+TOOLCHAIN_WRAPPER_ARGS = $($(PKG)_TOOLCHAIN_WRAPPER_ARGS)
+TOOLCHAIN_WRAPPER_ARGS += -DBR_SYSROOT='"$(STAGING_SUBDIR)"'
+
+TOOLCHAIN_WRAPPER_OPTS = \
+	$(ARCH_TOOLCHAIN_WRAPPER_OPTS) \
+	$(call qstrip,$(BR2_SSP_OPTION)) \
+	$(call qstrip,$(BR2_TARGET_OPTIMIZATION))
+
+ifeq ($(BR2_REPRODUCIBLE),y)
+TOOLCHAIN_WRAPPER_OPTS += -Wl,--build-id=none
+ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_8),y)
+TOOLCHAIN_WRAPPER_OPTS += -ffile-prefix-map=$(BASE_DIR)=buildroot
+else
+TOOLCHAIN_WRAPPER_OPTS += -D__FILE__=\"\" -D__BASE_FILE__=\"\" -Wno-builtin-macro-redefined
+endif
+ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_7),)
+TOOLCHAIN_WRAPPER_OPTS += -DBR_NEED_SOURCE_DATE_EPOCH
+endif
+endif
+
+# Disable -ftree-loop-distribute-patterns on microblaze to
+# workaround a compiler bug with gcc 10 and -O2, -Os or -O3.
+# https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=5879ab5fafedc8f6f9bfe95a4cf8501b0df90edd
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97208
+ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_10)$(BR2_microblaze),yy)
+TOOLCHAIN_WRAPPER_OPTS += -fno-tree-loop-distribute-patterns
+endif
+
+# We create a list like '"-mfoo", "-mbar", "-mbarfoo"' so that each flag is a
+# separate argument when used in execv() by the toolchain wrapper.
+TOOLCHAIN_WRAPPER_ARGS += \
+	-DBR_ADDITIONAL_CFLAGS='$(foreach f,$(TOOLCHAIN_WRAPPER_OPTS),"$(f)"$(comma))'
+
+ifeq ($(BR2_CCACHE),y)
+TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE
+endif
+
+ifeq ($(BR2_x86_x1000),y)
+TOOLCHAIN_WRAPPER_ARGS += -DBR_OMIT_LOCK_PREFIX
+endif
+
+# Avoid FPU bug on XBurst CPUs
+ifeq ($(BR2_mips_xburst),y)
+# Before gcc 4.6, -mno-fused-madd was needed, after -ffp-contract is
+# needed
+ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_4_6),y)
+TOOLCHAIN_WRAPPER_ARGS += -DBR_FP_CONTRACT_OFF
+else
+TOOLCHAIN_WRAPPER_ARGS += -DBR_NO_FUSED_MADD
+endif
+endif
+
+ifeq ($(BR2_CCACHE_USE_BASEDIR),y)
+TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE_BASEDIR='"$(BASE_DIR)"'
+endif
+
+ifeq ($(BR2_PIC_PIE),y)
+TOOLCHAIN_WRAPPER_ARGS += -DBR2_PIC_PIE
+endif
+
+ifeq ($(BR2_RELRO_PARTIAL),y)
+TOOLCHAIN_WRAPPER_ARGS += -DBR2_RELRO_PARTIAL
+else ifeq ($(BR2_RELRO_FULL),y)
+TOOLCHAIN_WRAPPER_ARGS += -DBR2_RELRO_FULL
+endif
+
+define TOOLCHAIN_WRAPPER_BUILD
+	$(HOSTCC) $(HOST_CFLAGS) $(TOOLCHAIN_WRAPPER_ARGS) \
+		-s -Wl,--hash-style=$(TOOLCHAIN_WRAPPER_HASH_STYLE) \
+		toolchain/toolchain-wrapper.c \
+		-o $(@D)/toolchain-wrapper
+endef
+
+define TOOLCHAIN_WRAPPER_INSTALL
+	$(INSTALL) -D -m 0755 $(@D)/toolchain-wrapper \
+		$(HOST_DIR)/bin/toolchain-wrapper
+endef

toolchain/toolchain.mk

@@ -0,0 +1,50 @@
+################################################################################
+#
+# toolchain-related customisation of the content of the target/ directory
+#
+################################################################################
+
+# Those customisations are added to the TARGET_FINALIZE_HOOKS, to be applied
+# just after all packages have been built.
+
+# Install the gconv modules
+ifeq ($(BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY),y)
+TOOLCHAIN_GLIBC_GCONV_LIBS = $(call qstrip,$(BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST))
+define TOOLCHAIN_GLIBC_COPY_GCONV_LIBS
+	$(Q)found_gconv=no; \
+	for d in $(TOOLCHAIN_EXTERNAL_PREFIX) ''; do \
+		[ -d "$(STAGING_DIR)/usr/lib/$${d}/gconv" ] || continue; \
+		found_gconv=yes; \
+		break; \
+	done; \
+	if [ "$${found_gconv}" = "no" ]; then \
+		printf "Unable to find gconv modules\n" >&2; \
+		exit 1; \
+	fi; \
+	if [ -z "$(TOOLCHAIN_GLIBC_GCONV_LIBS)" ]; then \
+		$(INSTALL) -m 0644 -D $(STAGING_DIR)/usr/lib/$${d}/gconv/gconv-modules \
+				      $(TARGET_DIR)/usr/lib/gconv/gconv-modules && \
+		$(INSTALL) -m 0644 $(STAGING_DIR)/usr/lib/$${d}/gconv/*.so \
+				   $(TARGET_DIR)/usr/lib/gconv \
+		|| exit 1; \
+	else \
+		for l in $(TOOLCHAIN_GLIBC_GCONV_LIBS); do \
+			$(INSTALL) -m 0644 -D $(STAGING_DIR)/usr/lib/$${d}/gconv/$${l}.so \
+					      $(TARGET_DIR)/usr/lib/gconv/$${l}.so \
+			|| exit 1; \
+			$(TARGET_READELF) -d $(STAGING_DIR)/usr/lib/$${d}/gconv/$${l}.so |\
+			sort -u |\
+			sed -e '/.*(NEEDED).*\[\(.*\.so\)\]$$/!d; s//\1/;' |\
+			while read lib; do \
+				 $(INSTALL) -m 0644 -D $(STAGING_DIR)/usr/lib/$${d}/gconv/$${lib} \
+						       $(TARGET_DIR)/usr/lib/gconv/$${lib} \
+				 || exit 1; \
+			done; \
+		done; \
+		./support/scripts/expunge-gconv-modules "$(TOOLCHAIN_GLIBC_GCONV_LIBS)" \
+			<$(STAGING_DIR)/usr/lib/$${d}/gconv/gconv-modules \
+			>$(TARGET_DIR)/usr/lib/gconv/gconv-modules; \
+	fi
+endef
+TOOLCHAIN_TARGET_FINALIZE_HOOKS += TOOLCHAIN_GLIBC_COPY_GCONV_LIBS
+endif

toolchain/toolchain/toolchain.mk

@@ -0,0 +1,50 @@
+################################################################################
+#
+# toolchain
+#
+################################################################################
+
+ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
+TOOLCHAIN_DEPENDENCIES += toolchain-buildroot
+else ifeq ($(BR2_TOOLCHAIN_EXTERNAL),y)
+TOOLCHAIN_DEPENDENCIES += toolchain-external
+endif
+
+TOOLCHAIN_ADD_TOOLCHAIN_DEPENDENCY = NO
+TOOLCHAIN_INSTALL_STAGING = YES
+
+# Apply a hack that Rick Felker suggested[1] to avoid conflicts between libc
+# headers and kernel headers. This is needed for kernel headers older than
+# 4.15. Kernel headers 4.15 and newer don't require __GLIBC__ to be defined.
+#
+# Augment the original suggestion with __USE_MISC since recent kernels
+# (older than 4.15) require this glibc internal macro. Also, as musl defines
+# IFF_LOWER_UP, IFF_DORMANT and IFF_ECHO, add another macro to suppress
+# them in the kernel header, and avoid macro/enum conflict.
+#
+# Kernel version 3.12 introduced the libc-compat.h header.
+#
+# [1] http://www.openwall.com/lists/musl/2015/10/08/2
+ifeq ($(BR2_TOOLCHAIN_USES_MUSL)$(BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12):$(BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15),yy:)
+define TOOLCHAIN_MUSL_KERNEL_HEADERS_COMPATIBILITY_HACK
+	$(SED) 's/^#if defined(__GLIBC__)$$/#if 1/' \
+		$(STAGING_DIR)/usr/include/linux/libc-compat.h
+	$(SED) '1s/^/#define __USE_MISC\n/' \
+		$(STAGING_DIR)/usr/include/linux/libc-compat.h
+	$(SED) '1s/^/#define __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO 0\n/' \
+		$(STAGING_DIR)/usr/include/linux/libc-compat.h
+endef
+TOOLCHAIN_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_MUSL_KERNEL_HEADERS_COMPATIBILITY_HACK
+endif
+
+# Install default nsswitch.conf file if the skeleton doesn't provide it
+ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
+define TOOLCHAIN_GLIBC_COPY_NSSWITCH_FILE
+	@if [ ! -f "$(TARGET_DIR)/etc/nsswitch.conf" ]; then \
+		$(INSTALL) -D -m 0644 package/glibc/nsswitch.conf $(TARGET_DIR)/etc/nsswitch.conf ; \
+	fi
+endef
+TOOLCHAIN_POST_INSTALL_TARGET_HOOKS += TOOLCHAIN_GLIBC_COPY_NSSWITCH_FILE
+endif
+
+$(eval $(virtual-package))