Merge branch 'for-2012.05/ext-toolchain-updates' of git://git.free-electrons.com/users/thomas-petazzoni/buildroot

target/Config.in.arch

@@ -266,6 +266,9 @@ config BR2_x86_nocona
 	bool "nocona"
 config BR2_x86_core2
 	bool "core2"
+config BR2_x86_atom
+	bool "atom"
+comment "atom needs gcc >= 4.5.x"
 config BR2_x86_k6
 	bool "k6"
 config BR2_x86_k6_2
@@ -311,6 +314,9 @@ config BR2_x86_64_nocona
 	bool "nocona"
 config BR2_x86_64_core2
 	bool "core2"
+config BR2_x86_64_atom
+	bool "atom"
+comment "atom needs gcc >= 4.5.x"
 endchoice
 
 choice
@@ -500,6 +506,7 @@ config BR2_ARCH
 	default "i686"		if BR2_x86_pentiumpro
 	default "i686"		if BR2_x86_nocona
 	default "i686"		if BR2_x86_core2
+	default "i686"		if BR2_x86_atom
 	default "i686"		if BR2_x86_opteron
 	default "i686"		if BR2_x86_opteron_sse3
 	default "i686"		if BR2_x86_barcelona
@@ -525,6 +532,7 @@ config BR2_ARCH
 	default "x86_64"	if BR2_x86_64_generic
 	default "x86_64"	if BR2_x86_64_nocona
 	default "x86_64"	if BR2_x86_64_core2
+	default "x86_64"	if BR2_x86_64_atom
 	default "x86_64"	if BR2_x86_64_opteron
 	default "x86_64"	if BR2_x86_64_opteron_sse3
 	default "x86_64"	if BR2_x86_64_barcelona
@@ -554,6 +562,7 @@ config BR2_GCC_TARGET_TUNE
 	default prescott	if BR2_x86_prescott
 	default nocona		if BR2_x86_nocona
 	default core2		if BR2_x86_core2
+	default atom		if BR2_x86_atom
 	default k8		if BR2_x86_opteron
 	default k8-sse3		if BR2_x86_opteron_sse3
 	default barcelona	if BR2_x86_barcelona
@@ -569,6 +578,7 @@ config BR2_GCC_TARGET_TUNE
 	default generic		if BR2_x86_64_generic
 	default nocona		if BR2_x86_64_nocona
 	default core2		if BR2_x86_64_core2
+	default atom		if BR2_x86_64_atom
 	default k8		if BR2_x86_64_opteron
 	default k8-sse3		if BR2_x86_64_opteron_sse3
 	default barcelona	if BR2_x86_64_barcelona
@@ -669,6 +679,7 @@ config BR2_GCC_TARGET_ARCH
 	default prescott	if BR2_x86_prescott
 	default nocona		if BR2_x86_nocona
 	default core2		if BR2_x86_core2
+	default atom		if BR2_x86_atom
 	default k8		if BR2_x86_opteron
 	default k8-sse3		if BR2_x86_opteron_sse3
 	default barcelona	if BR2_x86_barcelona
@@ -678,6 +689,12 @@ config BR2_GCC_TARGET_ARCH
 	default athlon-4	if BR2_x86_athlon_4
 	default winchip-c6	if BR2_x86_winchip_c6
 	default winchip2	if BR2_x86_winchip2
+	default nocona		if BR2_x86_64_nocona
+	default core2		if BR2_x86_64_core2
+	default atom		if BR2_x86_64_atom
+	default k8		if BR2_x86_64_opteron
+	default k8-sse3		if BR2_x86_64_opteron_sse3
+	default barcelona	if BR2_x86_64_barcelona
 	default c3		if BR2_x86_c3
 	default c3-2		if BR2_x86_c32
 	default geode		if BR2_x86_geode

toolchain/helpers.mk

@@ -7,22 +7,44 @@
 # directory to the target directory. Also optionaly strips the
 # library.
 #
-# Most toolchains have their libraries either in /lib or /usr/lib
-# relative to their ARCH_SYSROOT_DIR. Buildroot toolchains, however,
-# have basic libraries in /lib, and libstdc++/libgcc_s in
-# /usr/<target-name>/lib(64).
+# Most toolchains (CodeSourcery ones) have their libraries either in
+# /lib or /usr/lib relative to their ARCH_SYSROOT_DIR, so we search
+# libraries in:
+#
+#  $${ARCH_LIB_DIR}
+#  usr/$${ARCH_LIB_DIR}
+#
+# Buildroot toolchains, however, have basic libraries in /lib, and
+# libstdc++/libgcc_s in /usr/<target-name>/lib(64), so we also need to
+# search libraries in:
+#
+#  usr/$(TOOLCHAIN_EXTERNAL_PREFIX)/$${ARCH_LIB_DIR}
+#
+# Finally, Linaro toolchains have the libraries in lib/<target-name>/,
+# so we need to search libraries in:
+#
+#  $${ARCH_LIB_DIR}/$(TOOLCHAIN_EXTERNAL_PREFIX)
+#
+# Thanks to ARCH_LIB_DIR we also take into account toolchains that
+# have the libraries in lib64 and usr/lib64.
+#
+# Please be very careful to check the major toolchain sources:
+# Buildroot, Crosstool-NG, CodeSourcery and Linaro before doing any
+# modification on the below logic.
 #
 # $1: arch specific sysroot directory
-# $2: library name
-# $3: destination directory of the libary, relative to $(TARGET_DIR)
+# $2: library directory ('lib' or 'lib64') from which libraries must be copied
+# $3: library name
+# $4: destination directory of the libary, relative to $(TARGET_DIR)
 #
 copy_toolchain_lib_root = \
 	ARCH_SYSROOT_DIR="$(strip $1)"; \
-	LIB="$(strip $2)"; \
-	DESTDIR="$(strip $3)" ; \
+	ARCH_LIB_DIR="$(strip $2)" ; \
+	LIB="$(strip $3)"; \
+	DESTDIR="$(strip $4)" ; \
  \
 	LIBS=`(cd $${ARCH_SYSROOT_DIR}; \
-		find -L lib* usr/lib* usr/$(TOOLCHAIN_EXTERNAL_PREFIX)/lib* \
+		find -L $${ARCH_LIB_DIR} usr/$${ARCH_LIB_DIR} usr/$(TOOLCHAIN_EXTERNAL_PREFIX)/$${ARCH_LIB_DIR} $${ARCH_LIB_DIR}/$(TOOLCHAIN_EXTERNAL_PREFIX) \
 			-maxdepth 1 -name "$${LIB}.*" 2>/dev/null \
 		)` ; \
 	for FILE in $${LIBS} ; do \
@@ -84,12 +106,14 @@ copy_toolchain_lib_root = \
 # $1: main sysroot directory of the toolchain
 # $2: arch specific sysroot directory of the toolchain
 # $3: arch specific subdirectory in the sysroot
+# $4: directory of libraries ('lib' or 'lib64')
 #
 copy_toolchain_sysroot = \
 	SYSROOT_DIR="$(strip $1)"; \
 	ARCH_SYSROOT_DIR="$(strip $2)"; \
 	ARCH_SUBDIR="$(strip $3)"; \
-	for i in etc lib sbin usr ; do \
+	ARCH_LIB_DIR="$(strip $4)" ; \
+	for i in etc $${ARCH_LIB_DIR} sbin usr ; do \
 		if [ -d $${ARCH_SYSROOT_DIR}/$$i ] ; then \
 			rsync -au --chmod=Du+w --exclude 'usr/lib/locale' $${ARCH_SYSROOT_DIR}/$$i $(STAGING_DIR)/ ; \
 		fi ; \
@@ -98,7 +122,14 @@ copy_toolchain_sysroot = \
 		if [ ! -d $${ARCH_SYSROOT_DIR}/usr/include ] ; then \
 			cp -a $${SYSROOT_DIR}/usr/include $(STAGING_DIR)/usr ; \
 		fi ; \
-		ln -s . $(STAGING_DIR)/$${ARCH_SUBDIR} ; \
+		mkdir -p `dirname $(STAGING_DIR)/$${ARCH_SUBDIR}` ; \
+		relpath="./" ; \
+		nbslashs=`echo -n $${ARCH_SUBDIR} | sed 's%[^/]%%g' | wc -c` ; \
+		for slash in `seq 1 $${nbslashs}` ; do \
+			relpath=$${relpath}"../" ; \
+		done ; \
+		ln -s $${relpath} $(STAGING_DIR)/$${ARCH_SUBDIR} ; \
+		echo "Symlinking $(STAGING_DIR)/$${ARCH_SUBDIR} -> $${relpath}" ; \
 	fi ; \
 	find $(STAGING_DIR) -type d | xargs chmod 755
 
@@ -184,7 +215,7 @@ check_uclibc_feature = \
 #
 check_uclibc = \
 	SYSROOT_DIR="$(strip $1)"; \
-	if ! test -f $${SYSROOT_DIR}/lib/ld*-uClibc.so.* ; then \
+	if ! test -f $${SYSROOT_DIR}/usr/include/bits/uClibc_config.h ; then \
 		echo "Incorrect selection of the C library"; \
 		exit -1; \
 	fi; \

toolchain/toolchain-external/Config.in

@@ -3,6 +3,41 @@ if BR2_TOOLCHAIN_EXTERNAL
 choice
 	prompt "Toolchain"
 
+config BR2_TOOLCHAIN_EXTERNAL_LINARO_2012_01
+	bool "Linaro 2012.01"
+	depends on BR2_arm
+	depends on BR2_cortex_a8 || BR2_cortex_a9
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_INSTALL_LIBSTDCPP
+	help
+	  Linaro toolchain for the ARM architecture. It uses Linaro
+	  GCC 2012.01 (based on gcc 4.6), Linaro GDB 2011.12, eglibc
+	  2.13. 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 softfp calling convention, and uses the
+	  VFPv3-D16 FPU instructions.
+
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201109
+	bool "Sourcery CodeBench ARM 2011.09"
+	depends on BR2_arm
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_INSTALL_LIBSTDCPP
+	help
+	  Sourcery CodeBench toolchain for the ARM architecture, from
+	  Mentor Graphics. It uses gcc 4.6.1, binutils 2.21.53, glibc
+	  2.13 and gdb 7.2.50, kernel headers 3.0.1. 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
+
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201103
 	bool "Sourcery CodeBench ARM 2011.03"
 	depends on BR2_arm
@@ -14,8 +49,15 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201103
 	  2.13 and gdb 7.2.50, kernel headers 2.6.38. 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
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201009
 	bool "Sourcery CodeBench ARM 2010.09"
@@ -28,8 +70,15 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201009
 	  2.11 and gdb 7.2.50, kernel headers 2.6.35.2. 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
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2010Q1
 	bool "Sourcery CodeBench ARM 2010q1"
@@ -42,8 +91,15 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2010Q1
 	  2.11, gdb 7.0.50 and kernel headers 2.6.32. It has support
 	  for the following variants:
              - ARMv5T, 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
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q3
 	bool "Sourcery CodeBench ARM 2009q3"
@@ -56,22 +112,15 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q3
 	  2.10 and gdb 6.8 and kernel headers 2.6.30. It has support
 	  for the following variants:
             - ARMv5T, 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
-
-config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q1
-	bool "Sourcery CodeBench ARM 2009q1"
-	depends on BR2_arm
-	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
-	select BR2_INSTALL_LIBSTDCPP
-	help
-	  Sourcery CodeBench toolchain for the ARM architecture, from
-	  Mentor Graphics. It uses gcc 4.3.3, binutils 2.19, glibc 2.8
-	  and gdb 6.8 and kernel headers 2.6.30. It has support for
-	  the following variants:
-            - ARMv5T, little endian, soft-float, glibc
-            - ARMv4T, little endian, soft-float, glibc
-            - 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
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201103
 	bool "Sourcery CodeBench MIPS 2011.03"
@@ -84,17 +133,43 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201103
 	  2.13, uClibc 0.9.30 and gdb 7.2.50, kernel headers
 	  2.6.38. It has support for the following variants:
             - MIPS32 O32 big endian glibc
+              Select a MIPS generic core
+              Disable BR2_SOFT_FLOAT
             - MIPS32 O32 little endian glibc
+              Select a MIPS generic core
+              Disable BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -EL
             - MIPS32 big endian soft float glibc
+              Select a MIPS generic core
+              Select BR2_SOFT_FLOAT
             - MIPS32 little endian soft float glibc
+              Select a MIPS generic core
+              Select BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -EL
             - MIPS32 big endian microMIPS glibc
+              Select a MIPS generic core
+              Disable BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -mips16
             - MIPS32 little endian microMIPS glibc
+              Select a MIPS generic core
+              Disable BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -EL -mips16
             - MIPS32 big endian soft float microMIPS glibc
+              Select a MIPS generic core
+              Select BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -mips16
             - MIPS32 little endian soft float microMIPS glibc
+              Select a MIPS generic core
+              Select BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -EL -mips16
             - MIPS32 big endian uclibc
+              Not usable in Buildroot yet.
             - MIPS32 little endian uclibc
+              Not usable in Buildroot yet.
             - MIPS32 big endian soft float uclibc
+              Not usable in Buildroot yet.
             - MIPS32 little endian soft float uclibc
+              Not usable in Buildroot yet.
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS44
 	bool "Sourcery CodeBench MIPS 4.4"
@@ -107,17 +182,70 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS44
 	  2.11, uClibc 0.9.30 and gdb 7.0, kernel headers 2.6.32. It
 	  has support for the following variants:
             - MIPS32 O32 big endian glibc
+              Select a MIPS generic core
+              Disable BR2_SOFT_FLOAT
             - MIPS32 O32 little endian glibc
+              Select a MIPS generic core
+              Disable BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -EL
             - MIPS32 big endian soft float glibc
+              Select a MIPS generic core
+              Select BR2_SOFT_FLOAT
             - MIPS32 little endian soft float glibc
+              Select a MIPS generic core
+              Select BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -EL
             - MIPS32 big endian microMIPS glibc
+              Select a MIPS generic core
+              Disable BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -mips16
             - MIPS32 little endian microMIPS glibc
+              Select a MIPS generic core
+              Disable BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -EL -mips16
             - MIPS32 big endian soft float microMIPS glibc
+              Select a MIPS generic core
+              Select BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -mips16
             - MIPS32 little endian soft float microMIPS glibc
+              Select a MIPS generic core
+              Select BR2_SOFT_FLOAT
+              Set BR2_TARGET_OPTIMIZATION to -EL -mips16
             - MIPS32 big endian uclibc
+              Not usable in Buildroot yet.
             - MIPS32 little endian uclibc
+              Not usable in Buildroot yet.
             - MIPS32 big endian soft float uclibc
+              Not usable in Buildroot yet.
             - MIPS32 little endian soft float uclibc
+              Not usable in Buildroot yet.
+
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201103
+	bool "Sourcery CodeBench PowerPC 2011.03"
+	depends on BR2_powerpc
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_INSTALL_LIBSTDCPP
+	help
+	  Sourcery CodeBench toolchain for the PowerPC architecture,
+	  from Mentor Graphics. It uses gcc 4.5.2, binutils 2.20.51,
+	  glibc 2.13, gdb 7.2.50 and kernel headers 2.6.38. It has
+	  support for the following variants:
+            - 603 glibc, 32 bits
+	      Select a generic PowerPC core
+	      Disable BR2_SOFT_FLOAT
+            - 603 soft float glibc, 32 bits
+	      Select a generic PowerPC core
+	      Enable BR2_SOFT_FLOAT
+            - e600 altivec glibc, 32 bits
+              Set BR2_TARGET_OPTIMIZATION to -te600
+            - e500v1 glibc, 32 bits
+              Set BR2_TARGET_OPTIMIZATION to -te500v1
+            - e500v2 glibc, 32 bits
+              Set BR2_TARGET_OPTIMIZATION to -te500v2
+            - e500mc glibc, 32 bits
+              Set BR2_TARGET_OPTIMIZATION to -te500mc
+            - 970 glibc hard-float, 64 bits
+              Set BR2_TARGET_OPTIMIZATION to -m64
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009
 	bool "Sourcery CodeBench PowerPC 2010.09"
@@ -126,16 +254,25 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009
 	select BR2_INSTALL_LIBSTDCPP
 	help
 	  Sourcery CodeBench toolchain for the PowerPC architecture,
-	  from Sourcery CodeBench. It uses gcc 4.5.1, binutils 2.20,
+	  from Mentor Graphics. It uses gcc 4.5.1, binutils 2.20,
 	  glibc 2.11, gdb 7.2.50 and kernel headers 2.6.35.2. It has
 	  support for the following variants:
             - 603 glibc, 32 bits
+	      Select a generic PowerPC core
+	      Disable BR2_SOFT_FLOAT
             - 603 soft float glibc, 32 bits
+	      Select a generic PowerPC core
+	      Enable BR2_SOFT_FLOAT
             - e600 altivec glibc, 32 bits
+              Set BR2_TARGET_OPTIMIZATION to -te600
             - e500v1 glibc, 32 bits
+              Set BR2_TARGET_OPTIMIZATION to -te500v1
             - e500v2 glibc, 32 bits
+              Set BR2_TARGET_OPTIMIZATION to -te500v2
             - e500mc glibc, 32 bits
+              Set BR2_TARGET_OPTIMIZATION to -te500mc
             - 970 glibc hard-float, 64 bits
+              Set BR2_TARGET_OPTIMIZATION to -m64
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201103
 	bool "Sourcery CodeBench SH 2011.03"
@@ -148,9 +285,13 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201103
 	  glibc 2.13, uClibc 0.9.30, gdb 7.2.50 and kernel headers
 	  2.6.38. It has support for the following variants:
             - SH4A, glibc, little endian
+              Default.
             - SH4A, glibc, big endian
+              Add -mb to BR2_TARGET_OPTIMIZATION
             - SH4A, uClibc, little endian
+              Not usable in Buildroot yet.
             - SH4A, uClibc, big endian
+              Not usable in Buildroot yet.
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201009
 	bool "Sourcery CodeBench SH 2010.09"
@@ -163,9 +304,13 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201009
 	  glibc 2.11, uClibc 0.9.30, gdb 7.2.50 and kernel headers
 	  2.6.35.2. It has support for the following variants:
             - SH4A, glibc, little endian
+              Default.
             - SH4A, glibc, big endian
+              Add -mb to BR2_TARGET_OPTIMIZATION
             - SH4A, uClibc, little endian
+              Not usable in Buildroot yet.
             - SH4A, uClibc, big endian
+              Not usable in Buildroot yet.
 
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH2A_201103
 	bool "Sourcery CodeBench SH 2011.03"
@@ -201,6 +346,26 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH2A_201009
 	  has support for the following variants:
             - SH2A, uClibc, big endian
 
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201109
+	bool "Sourcery CodeBench x86/x86_64 2011.09"
+	depends on BR2_i386 || BR2_x86_64
+	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
+	select BR2_INSTALL_LIBSTDCPP
+	help
+	  Sourcery CodeBench toolchain for the x86/x86_64
+	  architectures, from Mentor Graphics. It uses gcc 4.6.1,
+	  binutils 2.21.53, glibc 2.13, gdb 7.2.50 and kernel headers
+	  3.0.1. It has support for the following variants:
+	    - Intel Pentium 4, glibc, 32 bits
+              Default, nothing special to do.
+            - Intel Atom, glibc, 32 bits
+              Select an Atom core
+            - Intel Xeon, glibc, 64 bits
+              Set BR2_TARGET_OPTIMIZATION to -m64
+            - Intel Core 2, glibc, 64 bits
+              Select a Core 2 core
+              Set BR2_TARGET_OPTIMIZATION to -m64
+
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201009
 	bool "Sourcery CodeBench x86/x86_64 2010.09"
 	depends on BR2_i386 || BR2_x86_64
@@ -212,9 +377,29 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201009
 	  binutils 2.20, glibc 2.11, gdb 7.2.50 and kernel headers
 	  2.6.35.2. It has support for the following variants:
 	    - Intel Pentium 4, glibc, 32 bits
+              Default, nothing special to do.
             - Intel Atom, glibc, 32 bits
+              Select an Atom core
             - Intel Xeon, glibc, 64 bits
+              Set BR2_TARGET_OPTIMIZATION to -m64
             - Intel Core 2, glibc, 64 bits
+              Select a Core 2 core
+              Set BR2_TARGET_OPTIMIZATION to -m64
+
+config BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2011R1
+	bool "Blackfin.uclinux.org 2011R1-RC4"
+	depends on BR2_bfin
+	select BR2_TOOLCHAIN_EXTERNAL_UCLIBC
+	select BR2_INSTALL_LIBSTDCPP
+	select BR2_LARGEFILE
+	select BR2_INET_IPV6
+	select BR2_INET_RPC
+	select BR2_USE_WCHAR
+	select BR2_TOOLCHAIN_HAS_THREADS
+	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
+	help
+	  Toolchain for the Blackfin architecture, from
+	  http://blackfin.uclinux.org.
 
 config BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2010RC1
 	bool "Blackfin.uclinux.org 2010RC1"
@@ -262,21 +447,26 @@ config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX
 
 config BR2_TOOLCHAIN_EXTERNAL_PREFIX
 	string
-	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q1
+	default "arm-linux-gnueabi"	 if BR2_TOOLCHAIN_EXTERNAL_LINARO_2012_01
 	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q3
 	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2010Q1
 	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201009
 	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201103
+	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201109
 	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS44
 	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201103
 	default "powerpc-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009
+	default "powerpc-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201103
 	default "sh-linux-gnu"           if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201009
 	default "sh-linux-gnu"           if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201103
 	default "sh-uclinux"             if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH2A_201009
 	default "sh-uclinux"             if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH2A_201103
 	default "i686-pc-linux-gnu"	 if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201009
+	default "i686-pc-linux-gnu"	 if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201109
 	default "bfin-uclinux"		 if BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2010RC1 && !BR2_BFIN_FDPIC
 	default "bfin-linux-uclibc"	 if BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2010RC1 && BR2_BFIN_FDPIC
+	default "bfin-uclinux"		 if BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2011R1 && !BR2_BFIN_FDPIC
+	default "bfin-linux-uclibc"	 if BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2011R1 && BR2_BFIN_FDPIC
 	default $(BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX) \
 					 if BR2_TOOLCHAIN_EXTERNAL_CUSTOM
 

toolchain/toolchain-external/ext-tool.mk

@@ -150,6 +150,14 @@ TOOLCHAIN_EXTERNAL_CFLAGS += -mabi=$(CC_TARGET_ABI_)
 TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_ABI='"$(CC_TARGET_ABI_)"'
 endif
 
+ifneq ($(BR2_TARGET_OPTIMIZATION),)
+TOOLCHAIN_EXTERNAL_CFLAGS += $(call qstrip,$(BR2_TARGET_OPTIMIZATION))
+# We create a list like '"-mfoo", "-mbar", "-mbarfoo"' so that each
+# flag is a separate argument when used in execv() by the external
+# toolchain wrapper.
+TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_ADDITIONAL_CFLAGS='$(foreach f,$(call qstrip,$(BR2_TARGET_OPTIMIZATION)),"$(f)",)'
+endif
+
 ifeq ($(BR2_SOFT_FLOAT),y)
 TOOLCHAIN_EXTERNAL_CFLAGS += -msoft-float
 TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_SOFTFLOAT=1
@@ -162,14 +170,9 @@ endif
 
 ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y)
 TOOLCHAIN_EXTERNAL_DEPENDENCIES = $(TOOLCHAIN_EXTERNAL_DIR)/.extracted
-else
-TOOLCHAIN_EXTERNAL_DEPENDENCIES = $(STAMP_DIR)/ext-toolchain-checked
 endif
 
-ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q1),y)
-TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/arm/portal/package4571/public/arm-none-linux-gnueabi/
-TOOLCHAIN_EXTERNAL_SOURCE=arm-2009q1-203-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
-else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q3),y)
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q3),y)
 TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/arm/portal/package5383/public/arm-none-linux-gnueabi/
 TOOLCHAIN_EXTERNAL_SOURCE=arm-2009q3-67-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2010Q1),y)
@@ -181,15 +184,24 @@ TOOLCHAIN_EXTERNAL_SOURCE=arm-2010.09-50-arm-none-linux-gnueabi-i686-pc-linux-gn
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201103),y)
 TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/arm/portal/package8739/public/arm-none-linux-gnueabi/
 TOOLCHAIN_EXTERNAL_SOURCE=arm-2011.03-41-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
+else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201109),y)
+TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/public/gnu_toolchain/arm-none-linux-gnueabi/
+TOOLCHAIN_EXTERNAL_SOURCE=arm-2011.09-70-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
+else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_2012_01),y)
+TOOLCHAIN_EXTERNAL_SITE=http://launchpad.net/linaro-toolchain-binaries/trunk/2012.01/+download/
+TOOLCHAIN_EXTERNAL_SOURCE=gcc-linaro-arm-linux-gnueabi-2012.01-20120125_linux.tar.bz2
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS44),y)
 TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/mips/portal/package7401/public/mips-linux-gnu/
 TOOLCHAIN_EXTERNAL_SOURCE=mips-4.4-303-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201103),y)
-TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/mips/portal/package9055/public/mips-linux-gnu/
-TOOLCHAIN_EXTERNAL_SOURCE=mips-2011.03-93-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2
+TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/mips/portal/package9469/public/mips-linux-gnu/
+TOOLCHAIN_EXTERNAL_SOURCE=mips-2011.03-110-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009),y)
 TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/power/portal/package7703/public/powerpc-linux-gnu/
 TOOLCHAIN_EXTERNAL_SOURCE=freescale-2010.09-55-powerpc-linux-gnu-i686-pc-linux-gnu.tar.bz2
+else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201103),y)
+TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/public/gnu_toolchain/powerpc-linux-gnu/
+TOOLCHAIN_EXTERNAL_SOURCE=freescale-2011.03-38-powerpc-linux-gnu-i686-pc-linux-gnu.tar.bz2
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201009),y)
 TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/superh/portal/package7783/public/sh-linux-gnu/
 TOOLCHAIN_EXTERNAL_SOURCE=renesas-2010.09-45-sh-linux-gnu-i686-pc-linux-gnu.tar.bz2
@@ -205,12 +217,21 @@ TOOLCHAIN_EXTERNAL_SOURCE=renesas-2011.03-36-sh-uclinux-i686-pc-linux-gnu.tar.bz
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201009),y)
 TOOLCHAIN_EXTERNAL_SITE=https://sourcery.mentor.com/sgpp/lite/ia32/portal/package7682/public/i686-pc-linux-gnu/
 TOOLCHAIN_EXTERNAL_SOURCE=ia32-2010.09-44-i686-pc-linux-gnu-i386-linux.tar.bz2
+else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201109),y)
+TOOLCHAIN_EXTERNAL_SITE=https://sourcery.mentor.com/public/gnu_toolchain/i686-pc-linux-gnu/
+TOOLCHAIN_EXTERNAL_SOURCE=ia32-2011.09-24-i686-pc-linux-gnu-i386-linux.tar.bz2
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2010RC1),y)
 TOOLCHAIN_EXTERNAL_SITE_1   = http://blackfin.uclinux.org/gf/download/frsrelease/501/8378/
 TOOLCHAIN_EXTERNAL_SOURCE_1 = blackfin-toolchain-2010R1-RC4.i386.tar.bz2
 TOOLCHAIN_EXTERNAL_SITE_2   = http://blackfin.uclinux.org/gf/download/frsrelease/501/8386/
 TOOLCHAIN_EXTERNAL_SOURCE_2 = blackfin-toolchain-uclibc-full-2010R1-RC4.i386.tar.bz2
 TOOLCHAIN_EXTERNAL_SOURCE   = $(TOOLCHAIN_EXTERNAL_SOURCE_1) $(TOOLCHAIN_EXTERNAL_SOURCE_2)
+else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2011R1),y)
+TOOLCHAIN_EXTERNAL_SITE_1   = http://blackfin.uclinux.org/gf/download/frsrelease/531/9509/
+TOOLCHAIN_EXTERNAL_SOURCE_1 = blackfin-toolchain-2011R1-RC4.i386.tar.bz2
+TOOLCHAIN_EXTERNAL_SITE_2   = http://blackfin.uclinux.org/gf/download/frsrelease/531/9517/
+TOOLCHAIN_EXTERNAL_SOURCE_2 = blackfin-toolchain-uclibc-full-2011R1-RC4.i386.tar.bz2
+TOOLCHAIN_EXTERNAL_SOURCE   = $(TOOLCHAIN_EXTERNAL_SOURCE_1) $(TOOLCHAIN_EXTERNAL_SOURCE_2)
 else
 # A value must be set (even if unused), otherwise the
 # $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE) rule would override the main
@@ -223,7 +244,7 @@ endif
 # contain ./opt/uClinux/{bfin-uclinux,bfin-linux-uclibc} directories,
 # which themselves contain the toolchain. This is why we strip more
 # components than usual.
-ifeq ($(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2010RC1),y)
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2010RC1)$(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2011R1),y)
 $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE_1):
 	$(call DOWNLOAD,$(TOOLCHAIN_EXTERNAL_SITE_1),$(TOOLCHAIN_EXTERNAL_SOURCE_1))
 
@@ -264,13 +285,11 @@ endif
 # location, check that it supports sysroot, and then verify that it
 # matches the configuration provided in Buildroot: ABI, C++ support,
 # type of C library and all C library features.
-$(STAMP_DIR)/ext-toolchain-checked:
+$(STAMP_DIR)/ext-toolchain-checked: $(TOOLCHAIN_EXTERNAL_DEPENDENCIES)
 	@echo "Checking external toolchain settings"
 	$(Q)$(call check_cross_compiler_exists,$(TOOLCHAIN_EXTERNAL_CC))
-	$(Q)SYSROOT_DIR=`$(TOOLCHAIN_EXTERNAL_CC) -print-sysroot 2>/dev/null` ; \
-	if test -z "$${SYSROOT_DIR}" ; then \
-		SYSROOT_DIR=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) -print-file-name=libc.a) |sed -r -e 's:usr/lib/libc\.a::;'` ; \
-	fi ; \
+	$(Q)LIBC_A_LOCATION=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) -print-file-name=libc.a)` ; \
+	SYSROOT_DIR=`echo $${LIBC_A_LOCATION} | sed -r -e 's:usr/lib(64)?/(.*/)?libc\.a::'` ; \
 	if test -z "$${SYSROOT_DIR}" ; then \
 		@echo "External toolchain doesn't support --sysroot. Cannot use." ; \
 		exit 1 ; \
@@ -292,27 +311,60 @@ $(STAMP_DIR)/ext-toolchain-checked:
 # and the variant-specific sysroot, then copy the needed libraries to
 # the $(TARGET_DIR) and copy the whole sysroot (libraries and headers)
 # to $(STAGING_DIR).
-$(STAMP_DIR)/ext-toolchain-installed: $(TOOLCHAIN_EXTERNAL_DEPENDENCIES)
-	$(Q)SYSROOT_DIR=`$(TOOLCHAIN_EXTERNAL_CC) -print-sysroot 2>/dev/null` ; \
-	if test -z "$${SYSROOT_DIR}" ; then \
-		SYSROOT_DIR=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) -print-file-name=libc.a) |sed -r -e 's:usr/lib/libc\.a::;'` ; \
-	fi ; \
+#
+# Variables are defined as follows:
+#
+#  LIBC_A_LOCATION:     location of the libc.a file in the default
+#                       multilib variant (allows to find the main
+#                       sysroot directory)
+#                       Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/usr/lib/libc.a
+#
+#  SYSROOT_DIR:         the main sysroot directory, deduced from
+#                       LIBC_A_LOCATION by removing the
+#                       usr/lib[64]/libc.a part of the path.
+#                       Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/
+#
+# ARCH_LIBC_A_LOCATION: location of the libc.a file in the selected
+#                       multilib variant (taking into account the
+#                       CFLAGS). Allows to find the sysroot of the
+#                       selected multilib variant.
+#                       Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/mips16/soft-float/el/usr/lib/libc.a
+#
+# ARCH_SYSROOT_DIR:     the sysroot of the selected multilib variant,
+#                       deduced from ARCH_LIBC_A_LOCATION by removing
+#                       usr/lib[64]/libc.a at the end of the path.
+#                       Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/mips16/soft-float/el/
+#
+# ARCH_LIB_DIR:         'lib' or 'lib64' depending on where libraries are
+#                       stored. Deduced from ARCH_LIBC_A_LOCATION by
+#                       looking at usr/lib??/libc.a.
+#                       Ex: lib
+#
+# ARCH_SUBDIR:          the relative location of the sysroot of the selected
+#                       multilib variant compared to the main sysroot.
+#			Ex: mips16/soft-float/el
+
+$(STAMP_DIR)/ext-toolchain-installed: $(STAMP_DIR)/ext-toolchain-checked
+	$(Q)LIBC_A_LOCATION=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) -print-file-name=libc.a)` ; \
+	SYSROOT_DIR=`echo $${LIBC_A_LOCATION} | sed -r -e 's:usr/lib(64)?/(.*/)?libc\.a::'` ; \
 	if test -z "$${SYSROOT_DIR}" ; then \
 		@echo "External toolchain doesn't support --sysroot. Cannot use." ; \
 		exit 1 ; \
 	fi ; \
-	ARCH_SUBDIR=`$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS) -print-multi-directory` ; \
-	ARCH_SYSROOT_DIR=$${SYSROOT_DIR}/$${ARCH_SUBDIR} ; \
+	ARCH_LIBC_A_LOCATION=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS) -print-file-name=libc.a)` ; \
+	ARCH_SYSROOT_DIR=`echo $${ARCH_LIBC_A_LOCATION} | sed -r -e 's:usr/lib(64)?/(.*/)?libc\.a::'` ; \
+	ARCH_LIB_DIR=`echo $${ARCH_LIBC_A_LOCATION} | sed -r -e 's:.*/usr/(lib(64)?)/(.*/)?libc.a:\1:'` ; \
+	ARCH_SUBDIR=`echo $${ARCH_SYSROOT_DIR} | sed -r -e "s:^$${SYSROOT_DIR}(.*)/$$:\1:"` ; \
 	mkdir -p $(TARGET_DIR)/lib ; \
 	echo "Copy external toolchain libraries to target..." ; \
 	for libs in $(LIB_EXTERNAL_LIBS); do \
-		$(call copy_toolchain_lib_root,$${ARCH_SYSROOT_DIR},$$libs,/lib); \
+		$(call copy_toolchain_lib_root,$${ARCH_SYSROOT_DIR},$${ARCH_LIB_DIR},$$libs,/lib); \
 	done ; \
 	for libs in $(USR_LIB_EXTERNAL_LIBS); do \
-		$(call copy_toolchain_lib_root,$${ARCH_SYSROOT_DIR},$$libs,/usr/lib); \
+		$(call copy_toolchain_lib_root,$${ARCH_SYSROOT_DIR},$${ARCH_LIB_DIR},$$libs,/usr/lib); \
 	done ; \
 	echo "Copy external toolchain sysroot to staging..." ; \
-	$(call copy_toolchain_sysroot,$${SYSROOT_DIR},$${ARCH_SYSROOT_DIR},$${ARCH_SUBDIR}) ; \
+	$(call copy_toolchain_sysroot,$${SYSROOT_DIR},$${ARCH_SYSROOT_DIR},$${ARCH_SUBDIR},$${ARCH_LIB_DIR}) ; \
 	if [ -L $${ARCH_SYSROOT_DIR}/lib64 ] ; then \
 		$(call create_lib64_symlinks) ; \
 	fi ; \

toolchain/toolchain-external/ext-toolchain-wrapper.c

@@ -40,6 +40,9 @@ static char *predef_args[] = {
 #ifdef BR_VFPFLOAT
 	"-mfpu=vfp",
 #endif /* BR_VFPFLOAT */
+#ifdef BR_ADDITIONAL_CFLAGS
+	BR_ADDITIONAL_CFLAGS
+#endif
 };
 
 static const char *get_basename(const char *name)