build system: move more clang handling to xcompile
clang requires some additional options to disable warnings which can be handled by xcompile. Also drop the hard coded clang compilers in Makefile Change-Id: I0f12f755420f315127e6d9adc00b1246c6e7131b Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/7612 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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committed by
Patrick Georgi
parent
45dd591ff6
commit
34de29aeb3
@@ -98,13 +98,13 @@ testas() {
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# Architecture matched.
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GCCPREFIX="$gccprefix"
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if [ -z "$use_dash_twidth" ]; then
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ASFLAGS=""
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CFLAGS_GCC=""
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LDFLAGS=""
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else
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unset ASFLAGS LDFLAGS
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unset CFLAGS_GCC CFLAGS_CLANG
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if [ -n "$use_dash_twidth" ]; then
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ASFLAGS="--$twidth"
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CFLAGS_GCC="-m$twidth"
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CFLAGS_CLANG="-m$twidth"
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LDFLAGS="-b $full_arch"
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fi
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@@ -114,6 +114,7 @@ testas() {
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"elf32-i386" )
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LDFLAGS="$LDFLAGS -melf_i386"
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CFLAGS_GCC="$CFLAGS_GCC -Wl,-b,elf32-i386 -Wl,-melf_i386"
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CFLAGS_CLANG="$CFLAGS_GCC -Wl,-b,elf32-i386 -Wl,-melf_i386"
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;;
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esac
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@@ -140,6 +141,8 @@ detect_special_flags() {
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x86)
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testcc "$GCC" "$CFLAGS_GCC -Wa,--divide" &&
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CFLAGS_GCC="$CFLAGS_GCC -Wa,--divide"
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testcc "$CLANG" "$CFLAGS_CLANG -Wa,--divide" &&
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CFLAGS_CLANG="$CFLAGS_CLANG -Wa,--divide"
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# Always build for i686 -- no sse/mmx instructions since SMM
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# modules are compiled using these flags. Note that this
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# doesn't prevent a project using xcompile to explicitly
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@@ -174,6 +177,10 @@ COMPILER_RT_${TARCH}:=${CC_RT_GCC}
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COMPILER_RT_FLAGS_${TARCH}:=${CC_RT_EXTRA_GCC}
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else
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CC_${TARCH}:=${CLANG}
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CFLAGS_${TARCH}:=${CFLAGS_CLANG}
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CFLAGS_${TARCH}+=-no-integrated-as -Qunused-arguments -m${TWIDTH}
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# tone down compiler warnings
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CFLAGS_${TARCH}+=-Wno-unused-variable -Wno-unused-function -Wno-tautological-compare -Wno-shift-overflow
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COMPILER_RT_${TARCH}:=${CC_RT_CLANG}
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COMPILER_RT_FLAGS_${TARCH}:=${CC_RT_EXTRA_CLANG}
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endif
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