forked from OSchip/llvm-project
93 lines
2.8 KiB
Makefile
93 lines
2.8 KiB
Makefile
Description := Static runtime libraries for clang/Linux.
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###
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CC := clang
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Arch := unknown
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Configs :=
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# We don't currently have any general purpose way to target architectures other
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# than the compiler defaults (because there is no generalized way to invoke
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# cross compilers). For now, we just find the target architecture of the
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# compiler and only define configurations we know that compiler can generate.
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CompilerTargetTriple := $(shell \
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LANG=C $(CC) -v 2>&1 | grep 'Target:' | cut -d' ' -f2)
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ifeq ($(CompilerTargetTriple),)
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$(error "unable to infer compiler target triple for $(CC)")
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endif
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# Only define configs if we detected a linux target.
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ifneq ($(findstring -linux-,$(CompilerTargetTriple)),)
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# Define configs only if arch in triple is i386 or x86_64
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CompilerTargetArch := $(firstword $(subst -, ,$(CompilerTargetTriple)))
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ifeq ($(call contains,i386 x86_64,$(CompilerTargetArch)),true)
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# TryCompile compiler source flags
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# Returns exit code of running a compiler invocation.
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TryCompile = \
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$(shell \
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cflags=""; \
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for flag in $(3); do \
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cflags="$$cflags $$flag"; \
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done; \
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$(1) $$cflags $(2) -o /dev/null > /dev/null 2> /dev/null ; \
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echo $$?)
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test_source = $(ProjSrcRoot)/make/platform/clang_linux_test_input.c
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ifeq ($(CompilerTargetArch),i386)
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SupportedArches := i386
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ifeq ($(call TryCompile,$(CC),$(test_source),-m64),0)
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SupportedArches += x86_64
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endif
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else
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SupportedArches := x86_64
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ifeq ($(call TryCompile,$(CC),$(test_source),-m32),0)
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SupportedArches += i386
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endif
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endif
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# Build runtime libraries for i386.
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ifeq ($(call contains,$(SupportedArches),i386),true)
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Configs += builtins-i386 profile-i386
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Arch.builtins-i386 := i386
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Arch.profile-i386 := i386
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endif
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# Build runtime libraries for x86_64.
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ifeq ($(call contains,$(SupportedArches),x86_64),true)
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Configs += builtins-x86_64 profile-x86_64
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Arch.builtins-x86_64 := x86_64
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Arch.profile-x86_64 := x86_64
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endif
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endif
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endif
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###
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CFLAGS := -Wall -Werror -O3 -fomit-frame-pointer
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CFLAGS.builtins-i386 := $(CFLAGS) -m32
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CFLAGS.builtins-x86_64 := $(CFLAGS) -m64
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CFLAGS.profile-i386 := $(CFLAGS) -m32
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CFLAGS.profile-x86_64 := $(CFLAGS) -m64
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FUNCTIONS.builtins-i386 := $(CommonFunctions) $(ArchFunctions.i386)
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FUNCTIONS.builtins-x86_64 := $(CommonFunctions) $(ArchFunctions.x86_64)
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FUNCTIONS.profile-i386 := GCDAProfiling InstrProfiling InstrProfilingBuffer \
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InstrProfilingFile InstrProfilingPlatformOther \
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InstrProfilingRuntime InstrProfilingUtil \
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InstrProfilingWriter InstrProfilingValue \
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InstrProfilingMerge InstrProfilingMergeFile
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FUNCTIONS.profile-x86_64 := $(FUNCTIONS.profile-i386)
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# Always use optimized variants.
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OPTIMIZED := 1
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# We don't need to use visibility hidden on Linux.
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VISIBILITY_HIDDEN := 0
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SHARED_LIBRARY_SUFFIX := so
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