initial buildroot for linux 5.15

package/bdwgc/0001-Fix-undefined-reference-to-__data_start-linker-error.patch

@@ -0,0 +1,33 @@
+From 301ef15aefa6764466c374d07efb511b1c3862cc Mon Sep 17 00:00:00 2001
+From: Nikita Ermakov <coffe92@gmail.com>
+Date: Wed, 20 May 2020 17:57:17 +0300
+Subject: [PATCH] Fix 'undefined reference to __data_start' linker error on
+ RISC-V
+
+Issue #294 (bdwgc).
+
+* include/private/gcconfig.h [RISCV && LINUX] (__data_start): Add
+attribute(weak).
+
+(cherry picked from commit 538562ad01b181f4cc3913da1ac06a77945cd9b9)
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ include/private/gcconfig.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
+index d9d45da1..d6cefa6f 100644
+--- a/include/private/gcconfig.h
++++ b/include/private/gcconfig.h
+@@ -2943,7 +2943,7 @@ EXTERN_C_BEGIN
+ #   define ALIGNMENT (CPP_WORDSZ/8)
+ #   ifdef LINUX
+ #     define OS_TYPE "LINUX"
+-      extern int __data_start[];
++      extern int __data_start[] __attribute__((__weak__));
+ #     define DATASTART ((ptr_t)__data_start)
+ #     define LINUX_STACKBOTTOM
+ #     define DYNAMIC_LOADING
+-- 
+2.30.2
+

package/bdwgc/Config.in

@@ -0,0 +1,10 @@
+config BR2_PACKAGE_BDWGC
+	bool "bdwgc"
+	depends on BR2_PACKAGE_LIBATOMIC_OPS_ARCH_SUPPORTS
+	select BR2_PACKAGE_LIBATOMIC_OPS
+	help
+	  The Boehm-Demers-Weiser conservative garbage collector can
+	  be used as a garbage collecting replacement for C 'malloc'
+	  or C++ 'new'.
+
+	  http://www.hboehm.info/gc/

package/bdwgc/bdwgc.hash

@@ -0,0 +1,3 @@
+# Locally computed
+sha256 436a0ddc67b1ac0b0405b61a9675bca9e075c8156f4debd1d06f3a56c7cd289d  gc-8.0.4.tar.gz
+sha256 aeeaabbf44e67d413e18719f0c6ac9c23387ab0b33e7a15ee46cf59ddef12cc7  README.QUICK

package/bdwgc/bdwgc.mk

@@ -0,0 +1,36 @@
+################################################################################
+#
+# bdwgc
+#
+################################################################################
+
+BDWGC_VERSION = 8.0.4
+BDWGC_SOURCE = gc-$(BDWGC_VERSION).tar.gz
+BDWGC_SITE = http://www.hboehm.info/gc/gc_source
+BDWGC_INSTALL_STAGING = YES
+BDWGC_LICENSE = bdwgc license
+BDWGC_LICENSE_FILES = README.QUICK
+BDWGC_CPE_ID_VENDOR = bdwgc_project
+BDWGC_DEPENDENCIES = libatomic_ops host-pkgconf
+HOST_BDWGC_DEPENDENCIES = host-libatomic_ops host-pkgconf
+
+BDWGC_CONF_OPTS = CFLAGS_EXTRA="$(BDWGC_CFLAGS_EXTRA)"
+ifeq ($(BR2_sparc),y)
+BDWGC_CFLAGS_EXTRA += -DAO_NO_SPARC_V9
+endif
+ifeq ($(BR2_STATIC_LIBS),y)
+BDWGC_CFLAGS_EXTRA += -DGC_NO_DLOPEN
+endif
+
+# Ensure we use the system libatomic_ops, and not the internal one.
+BDWGC_CONF_OPTS += --with-libatomic-ops=yes
+HOST_BDWGC_CONF_OPTS = --with-libatomic-ops=yes
+
+ifeq ($(BR2_INSTALL_LIBSTDCPP),y)
+BDWGC_CONF_OPTS += --enable-cplusplus
+else
+BDWGC_CONF_OPTS += --disable-cplusplus
+endif
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))