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Avoid accidentally using the host's native 'as' command. 

When invoking clang for the host to assemble .S files, the -B flag
would not be provided, which allowed the host prebuilt clang to
use an 'as' from the native environment. Most of the time this
"just works", but some newer 'as' versions cause problems with
the older prebuilt toolchain, for example by generating
unsupported relocation types.

To avoid this problem, simply use the -B flag to tell clang to
invoke the assembler from the correct prebuilt gcc prefix.

Change-Id: I18ea4f37ae637b652cfd7321c41929f8be075342
Signed-off-by: Alistair Strachan <alistair.strachan@imgtec.com>
This commit is contained in:
Alistair Strachan 2016-05-05 16:29:08 -07:00
parent c9778e339d
commit 5ff9c81b6c
1 changed files with 2 additions and 1 deletions
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3
core/clang/HOST_x86_common.mk
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@ -13,7 +13,8 @@ endif
ifeq ($(HOST_OS),linux)
CLANG_CONFIG_x86_LINUX_HOST_EXTRA_ASFLAGS := \
--gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
--sysroot $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot
--sysroot $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
-B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/bin
CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CFLAGS := \
--gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)