initial buildroot for linux 5.15

package/gdb/Config.in.host

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+config BR2_PACKAGE_HOST_GDB_ARCH_SUPPORTS
+	bool
+	default y
+	depends on !((BR2_arm || BR2_armeb) && BR2_BINFMT_FLAT)
+	depends on !BR2_microblaze
+	depends on !BR2_or1k
+	depends on !BR2_nds32
+
+comment "Host GDB Options"
+	depends on !BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY
+	depends on BR2_PACKAGE_HOST_GDB_ARCH_SUPPORTS
+
+config BR2_PACKAGE_HOST_GDB
+	bool "Build cross gdb for the host"
+	# When the external toolchain gdbserver is used, we shouldn't
+	# allow to build a cross-gdb, as the one of the external
+	# toolchain should be used.
+	depends on !BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY
+	depends on BR2_PACKAGE_HOST_GDB_ARCH_SUPPORTS
+	help
+	  Build a cross gdb that runs on the host machine and debugs
+	  programs running on the target. It requires 'gdbserver'
+	  installed on the target, see BR2_PACKAGE_GDB_SERVER to
+	  enable it.
+
+if BR2_PACKAGE_HOST_GDB
+
+config BR2_PACKAGE_HOST_GDB_TUI
+	bool "TUI support"
+	help
+	  This option enables terminal user interface (TUI) for gdb
+
+choice
+	prompt "Python support"
+	default BR2_PACKAGE_HOST_GDB_NOPYTHON
+	help
+	  Select the version of Python you wish to use
+
+config BR2_PACKAGE_HOST_GDB_NOPYTHON
+	bool "None"
+	help
+	  This option disables Python support in the cross gdb.
+
+config BR2_PACKAGE_HOST_GDB_PYTHON
+	bool "Python 2"
+	help
+	  This option enables the Python 2 support in the cross gdb.
+
+config BR2_PACKAGE_HOST_GDB_PYTHON3
+	bool "Python 3"
+	help
+	  This option enables the Python 3 support in the cross gdb.
+
+endchoice
+
+config BR2_PACKAGE_HOST_GDB_SIM
+	bool "Simulator support"
+	depends on !BR2_arc
+	help
+	  This option enables the simulator support in the cross gdb.
+
+choice
+	prompt "GDB debugger Version"
+	default BR2_GDB_VERSION_10
+	depends on !BR2_arc
+	depends on !BR2_csky
+	help
+	  Select the version of gdb you wish to use.
+
+config BR2_GDB_VERSION_9_2
+	bool "gdb 9.2.x"
+	# gdbserver support missing
+	depends on !BR2_riscv
+
+config BR2_GDB_VERSION_10
+	bool "gdb 10.x"
+
+config BR2_GDB_VERSION_11
+	bool "gdb 11.x"
+
+endchoice
+
+endif
+
+# If cross-gdb is not enabled, the latest stable version is chosen.
+config BR2_GDB_VERSION
+	string
+	default "arc-2020.09-release-gdb" if BR2_arc
+	default "4ecb98fbc2f94dbe01b69384afbc515107de73df" if BR2_csky
+	default "9.2"      if BR2_GDB_VERSION_9_2
+	default "10.2"	   if BR2_GDB_VERSION_10 || !BR2_PACKAGE_HOST_GDB
+	default "11.1"     if BR2_GDB_VERSION_11
+	depends on BR2_PACKAGE_GDB || BR2_PACKAGE_HOST_GDB
+
+# recent gdb versions (>= 10) have gdbserver moved at the top-level,
+# which requires a different build logic.
+config BR2_PACKAGE_GDB_TOPLEVEL
+	bool
+	default y if BR2_arc
+	default y if BR2_GDB_VERSION_10
+	default y if BR2_GDB_VERSION_11
+	default y if !BR2_PACKAGE_HOST_GDB
+	depends on BR2_PACKAGE_GDB || BR2_PACKAGE_HOST_GDB