runtime/compiler-rt/Makefile - platform/external/clang - Git at Google

 ##===- clang/runtime/compiler-rt/Makefile ------------------*- Makefile -*-===##
 #
 #                     The LLVM Compiler Infrastructure
 #
 # This file is distributed under the University of Illinois Open Source
 # License. See LICENSE.TXT for details.
 #
 ##===----------------------------------------------------------------------===##
 #
 # This file defines support for building the Clang runtime libraries (which are
 # implemented by compiler-rt) and placing them in the proper locations in the
 # Clang resources directory (i.e., where the driver expects them).
 #
 ##===----------------------------------------------------------------------===##

 CLANG_LEVEL := ../..
 include $(CLANG_LEVEL)/Makefile

 CLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \
 	$(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc))

 ResourceDir := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/clang/$(CLANG_VERSION)
 PROJ_resources := $(DESTDIR)$(PROJ_prefix)/lib/clang/$(CLANG_VERSION)

 ResourceLibDir := $(ResourceDir)/lib
 PROJ_resources_lib := $(PROJ_resources)/lib

 # Expect compiler-rt to be in llvm/projects/compiler-rt
 COMPILERRT_SRC_ROOT := $(LLVM_SRC_ROOT)/projects/compiler-rt

 # We don't currently support building runtime libraries when we are
 # cross-compiling. The issue is that we really want to be set up so that the
 # available compiler targets are independent of the current build.
 #
 # Since we have to build the runtime libraries for the target, it requires we
 # have a cross compiler from the build machine to the target. Although in the
 # case where for the current build (host == target), we do have such a cross
 # compiler, but not defined in a way that is easy for us to reuse. Regardless,
 # that also wouldn't help for other possible compiler configurations.
 #
 # Thus, the simple set up we currently use is to assume that we will be using
 # the just built Clang to compile the compiler-rt libraries. As we grow better
 # cross compilation support inside Clang and tool support in LLVM, this makes it
 # easier for us to achieve the goal of having the compiler targets be easily
 # selected at configure time. However, this design does currently preclude the
 # building of compiler-rt libraries when the Clang itself is being cross
 # compiled.
 #
 # There are three possible solutions:
 #  1. Require building a build-target version of Clang when cross compiling. This
 #     is simplest, but als greatly increases the build time of cross builds.
 #
 #  2. Require cross builds have a build-target version of Clang available for
 #     use. This is a reasonable compromise on #1, as the compiler-rt libraries
 #     are simple enough that there is not a strong desire to ensure they are
 #     built with the exact version of Clang being used. Similarly, as Clang
 #     becomes a better cross compiler it is also increasingly more likely that
 #     the cross compiler being used will already be a version of Clang.
 #
 #  3. Come up with an alternate mechanism to define all the toolchain
 #     information that compiler-rt would need to build libraries for all the
 #     requested targets. This might be a simple short term solution, but is
 #     likely to be unwieldly and irritating to maintain in the long term.
 ifneq ($(LLVM_CROSS_COMPILING),1)
 ifneq ($(CLANG_NO_RUNTIME),1)
 ifeq ($(shell test -d $(COMPILERRT_SRC_ROOT) && echo OK),OK)

 # Select the compiler-rt configuration to use, and install directory.
 #
 # FIXME: Eventually, we want some kind of configure support for this. We want to
 # build/install runtime libraries for as many targets as clang was configured to
 # support.
 RuntimeDirs :=
 ifeq ($(OS),Darwin)
 RuntimeDirs += darwin
 RuntimeLibrary.darwin.Configs := \
 	eprintf.a 10.4.a osx.a ios.a cc_kext.a cc_kext_ios5.a \
 	asan_osx.a asan_osx_dynamic.dylib \
 	profile_osx.a profile_ios.a \
 	ubsan_osx.a
 endif

 # On Linux, include a library which has all the runtime functions.
 ifeq ($(OS),Linux)
 RuntimeDirs += linux
 RuntimeLibrary.linux.Configs :=

 # TryCompile compiler source flags
 # Returns exit code of running a compiler invocation.
 TryCompile = \
   $(shell \
     cflags=""; \
     for flag in $(3); do \
       cflags="$$cflags $$flag"; \
     done; \
     $(1) $$cflags $(2) -o /dev/null > /dev/null 2> /dev/null ; \
     echo $$?)

 # We currently only try to generate runtime libraries on x86.
 ifeq ($(ARCH),x86)
 RuntimeLibrary.linux.Configs += \
 	full-i386.a profile-i386.a asan-i386.a ubsan-i386.a
 endif

 ifeq ($(ARCH),x86_64)
 RuntimeLibrary.linux.Configs += \
 	full-x86_64.a profile-x86_64.a asan-x86_64.a tsan-x86_64.a msan-x86_64.a \
 	ubsan-x86_64.a
 # We need to build 32-bit ASan/UBsan libraries on 64-bit platform, and add them
 # to the list of runtime libraries to make
 # "clang -fsanitize=(address|undefined) -m32" work.
 # We check that Clang can produce working 32-bit binaries by compiling a simple
 # executable.
 test_source = $(LLVM_SRC_ROOT)/tools/clang/runtime/compiler-rt/clang_linux_test_input.c
 ifeq ($(call TryCompile,$(ToolDir)/clang,$(test_source),-m32),0)
 RuntimeLibrary.linux.Configs += asan-i386.a ubsan-i386.a
 endif
 ifneq ($(LLVM_ANDROID_TOOLCHAIN_DIR),)
 RuntimeLibrary.linux.Configs += asan-arm-android.so
 endif
 endif

 endif

 ####
 # The build rules below are designed to be generic and should only need to be
 # modified based on changes in the compiler-rt layout or build system.
 ####

 # Rule to build the compiler-rt libraries we need.
 #
 # We build all the libraries in a single shot to avoid recursive make as much as
 # possible.
 BuildRuntimeLibraries:
 	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
 	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
 	  ProjObjRoot=$(PROJ_OBJ_DIR) \
 	  CC="$(ToolDir)/clang" \
 	  LLVM_ANDROID_TOOLCHAIN_DIR="$(LLVM_ANDROID_TOOLCHAIN_DIR)" \
 	  $(RuntimeDirs:%=clang_%)
 .PHONY: BuildRuntimeLibraries
 CleanRuntimeLibraries:
 	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
 	  ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
 	  ProjObjRoot=$(PROJ_OBJ_DIR) \
 	  clean
 .PHONY: CleanRuntimeLibraries

 $(PROJ_resources_lib):
 	$(Verb) $(MKDIR) $@

 # Expand rules for copying/installing each individual library. We can't use
 # implicit rules here because we need to match against multiple things.
 define RuntimeLibraryTemplate
 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries
 	@true
 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.so: BuildRuntimeLibraries
 	@true
 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.dylib: BuildRuntimeLibraries
 	@true
 .PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a

 # Rule to copy the libraries to their resource directory location.
 $(ResourceLibDir)/$1/libclang_rt.%.a: \
 		$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \
 		$(ResourceLibDir)/$1/.dir
 	$(Echo) Copying runtime library $1/$$* to build dir
 	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@
 $(ResourceLibDir)/$1/libclang_rt.%.so: \
 		$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.so \
 		$(ResourceLibDir)/$1/.dir
 	$(Echo) Copying runtime library $1/$$* to build dir
 	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.so $$@
 $(ResourceLibDir)/$1/libclang_rt.%.dylib: \
 		$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.dylib \
 		$(ResourceLibDir)/$1/.dir
 	$(Echo) Copying runtime library $1/$$* to build dir
 	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.dylib $$@
 	$(Echo) Fixing LC_ID_DYLIB of $$@
 	$(Verb) install_name_tool $$@ -id $$@
 RuntimeLibrary.$1: \
 		$(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%)
 .PHONY: RuntimeLibrary.$1

 $(PROJ_resources_lib)/$1: $(PROJ_resources_lib)
 	$(Verb) $(MKDIR) $$@

 $(PROJ_resources_lib)/$1/libclang_rt.%.a: \
 		$(ResourceLibDir)/$1/libclang_rt.%.a | $(PROJ_resources_lib)/$1
 	$(Echo) Installing compiler runtime library: $1/$$*
 	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
 $(PROJ_resources_lib)/$1/libclang_rt.%.so: \
 		$(ResourceLibDir)/$1/libclang_rt.%.so | $(PROJ_resources_lib)/$1
 	$(Echo) Installing compiler runtime library: $1/$$*
 	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
 $(PROJ_resources_lib)/$1/libclang_rt.%.dylib: \
 		$(ResourceLibDir)/$1/libclang_rt.%.dylib | $(PROJ_resources_lib)/$1
 	$(Echo) Installing compiler runtime library: $1/$$*
 	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1

 # Rule to install runtime libraries.
 RuntimeLibraryInstall.$1: \
 		$(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%)
 .PHONY: RuntimeLibraryInstall.$1
 endef
 $(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib))))

 # Hook into the standard Makefile rules.
 all-local:: $(RuntimeDirs:%=RuntimeLibrary.%)
 install-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%)
 clean-local:: CleanRuntimeLibraries

 endif
 endif
 endif
	##===- clang/runtime/compiler-rt/Makefile ------------------- Makefile --===##
	#
	# The LLVM Compiler Infrastructure
	#
	# This file is distributed under the University of Illinois Open Source
	# License. See LICENSE.TXT for details.
	#
	##===----------------------------------------------------------------------===##
	#
	# This file defines support for building the Clang runtime libraries (which are
	# implemented by compiler-rt) and placing them in the proper locations in the
	# Clang resources directory (i.e., where the driver expects them).
	#
	##===----------------------------------------------------------------------===##

	CLANG_LEVEL := ../..
	include $(CLANG_LEVEL)/Makefile

	CLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \
	$(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc))

	ResourceDir := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/clang/$(CLANG_VERSION)
	PROJ_resources := $(DESTDIR)$(PROJ_prefix)/lib/clang/$(CLANG_VERSION)

	ResourceLibDir := $(ResourceDir)/lib
	PROJ_resources_lib := $(PROJ_resources)/lib

	# Expect compiler-rt to be in llvm/projects/compiler-rt
	COMPILERRT_SRC_ROOT := $(LLVM_SRC_ROOT)/projects/compiler-rt

	# We don't currently support building runtime libraries when we are
	# cross-compiling. The issue is that we really want to be set up so that the
	# available compiler targets are independent of the current build.
	#
	# Since we have to build the runtime libraries for the target, it requires we
	# have a cross compiler from the build machine to the target. Although in the
	# case where for the current build (host == target), we do have such a cross
	# compiler, but not defined in a way that is easy for us to reuse. Regardless,
	# that also wouldn't help for other possible compiler configurations.
	#
	# Thus, the simple set up we currently use is to assume that we will be using
	# the just built Clang to compile the compiler-rt libraries. As we grow better
	# cross compilation support inside Clang and tool support in LLVM, this makes it
	# easier for us to achieve the goal of having the compiler targets be easily
	# selected at configure time. However, this design does currently preclude the
	# building of compiler-rt libraries when the Clang itself is being cross
	# compiled.
	#
	# There are three possible solutions:
	# 1. Require building a build-target version of Clang when cross compiling. This
	# is simplest, but als greatly increases the build time of cross builds.
	#
	# 2. Require cross builds have a build-target version of Clang available for
	# use. This is a reasonable compromise on #1, as the compiler-rt libraries
	# are simple enough that there is not a strong desire to ensure they are
	# built with the exact version of Clang being used. Similarly, as Clang
	# becomes a better cross compiler it is also increasingly more likely that
	# the cross compiler being used will already be a version of Clang.
	#
	# 3. Come up with an alternate mechanism to define all the toolchain
	# information that compiler-rt would need to build libraries for all the
	# requested targets. This might be a simple short term solution, but is
	# likely to be unwieldly and irritating to maintain in the long term.
	ifneq ($(LLVM_CROSS_COMPILING),1)
	ifneq ($(CLANG_NO_RUNTIME),1)
	ifeq ($(shell test -d $(COMPILERRT_SRC_ROOT) && echo OK),OK)

	# Select the compiler-rt configuration to use, and install directory.
	#
	# FIXME: Eventually, we want some kind of configure support for this. We want to
	# build/install runtime libraries for as many targets as clang was configured to
	# support.
	RuntimeDirs :=
	ifeq ($(OS),Darwin)
	RuntimeDirs += darwin
	RuntimeLibrary.darwin.Configs := \
	eprintf.a 10.4.a osx.a ios.a cc_kext.a cc_kext_ios5.a \
	asan_osx.a asan_osx_dynamic.dylib \
	profile_osx.a profile_ios.a \
	ubsan_osx.a
	endif

	# On Linux, include a library which has all the runtime functions.
	ifeq ($(OS),Linux)
	RuntimeDirs += linux
	RuntimeLibrary.linux.Configs :=

	# TryCompile compiler source flags
	# Returns exit code of running a compiler invocation.
	TryCompile = \
	$(shell \
	cflags=""; \
	for flag in $(3); do \
	cflags="$$cflags $$flag"; \
	done; \
	$(1) $$cflags $(2) -o /dev/null > /dev/null 2> /dev/null ; \
	echo $$?)

	# We currently only try to generate runtime libraries on x86.
	ifeq ($(ARCH),x86)
	RuntimeLibrary.linux.Configs += \
	full-i386.a profile-i386.a asan-i386.a ubsan-i386.a
	endif

	ifeq ($(ARCH),x86_64)
	RuntimeLibrary.linux.Configs += \
	full-x86_64.a profile-x86_64.a asan-x86_64.a tsan-x86_64.a msan-x86_64.a \
	ubsan-x86_64.a
	# We need to build 32-bit ASan/UBsan libraries on 64-bit platform, and add them
	# to the list of runtime libraries to make
	# "clang -fsanitize=(address\|undefined) -m32" work.
	# We check that Clang can produce working 32-bit binaries by compiling a simple
	# executable.
	test_source = $(LLVM_SRC_ROOT)/tools/clang/runtime/compiler-rt/clang_linux_test_input.c
	ifeq ($(call TryCompile,$(ToolDir)/clang,$(test_source),-m32),0)
	RuntimeLibrary.linux.Configs += asan-i386.a ubsan-i386.a
	endif
	ifneq ($(LLVM_ANDROID_TOOLCHAIN_DIR),)
	RuntimeLibrary.linux.Configs += asan-arm-android.so
	endif
	endif

	endif

	####
	# The build rules below are designed to be generic and should only need to be
	# modified based on changes in the compiler-rt layout or build system.
	####

	# Rule to build the compiler-rt libraries we need.
	#
	# We build all the libraries in a single shot to avoid recursive make as much as
	# possible.
	BuildRuntimeLibraries:
	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
	ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
	ProjObjRoot=$(PROJ_OBJ_DIR) \
	CC="$(ToolDir)/clang" \
	LLVM_ANDROID_TOOLCHAIN_DIR="$(LLVM_ANDROID_TOOLCHAIN_DIR)" \
	$(RuntimeDirs:%=clang_%)
	.PHONY: BuildRuntimeLibraries
	CleanRuntimeLibraries:
	$(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
	ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
	ProjObjRoot=$(PROJ_OBJ_DIR) \
	clean
	.PHONY: CleanRuntimeLibraries

	$(PROJ_resources_lib):
	$(Verb) $(MKDIR) $@

	# Expand rules for copying/installing each individual library. We can't use
	# implicit rules here because we need to match against multiple things.
	define RuntimeLibraryTemplate
	$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries
	@true
	$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.so: BuildRuntimeLibraries
	@true
	$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.dylib: BuildRuntimeLibraries
	@true
	.PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a

	# Rule to copy the libraries to their resource directory location.
	$(ResourceLibDir)/$1/libclang_rt.%.a: \
	$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \
	$(ResourceLibDir)/$1/.dir
	$(Echo) Copying runtime library $1/$$* to build dir
	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@
	$(ResourceLibDir)/$1/libclang_rt.%.so: \
	$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.so \
	$(ResourceLibDir)/$1/.dir
	$(Echo) Copying runtime library $1/$$* to build dir
	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.so $$@
	$(ResourceLibDir)/$1/libclang_rt.%.dylib: \
	$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.dylib \
	$(ResourceLibDir)/$1/.dir
	$(Echo) Copying runtime library $1/$$* to build dir
	$(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.dylib $$@
	$(Echo) Fixing LC_ID_DYLIB of $$@
	$(Verb) install_name_tool $$@ -id $$@
	RuntimeLibrary.$1: \
	$(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%)
	.PHONY: RuntimeLibrary.$1

	$(PROJ_resources_lib)/$1: $(PROJ_resources_lib)
	$(Verb) $(MKDIR) $$@

	$(PROJ_resources_lib)/$1/libclang_rt.%.a: \
	$(ResourceLibDir)/$1/libclang_rt.%.a \| $(PROJ_resources_lib)/$1
	$(Echo) Installing compiler runtime library: $1/$$*
	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
	$(PROJ_resources_lib)/$1/libclang_rt.%.so: \
	$(ResourceLibDir)/$1/libclang_rt.%.so \| $(PROJ_resources_lib)/$1
	$(Echo) Installing compiler runtime library: $1/$$*
	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
	$(PROJ_resources_lib)/$1/libclang_rt.%.dylib: \
	$(ResourceLibDir)/$1/libclang_rt.%.dylib \| $(PROJ_resources_lib)/$1
	$(Echo) Installing compiler runtime library: $1/$$*
	$(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1

	# Rule to install runtime libraries.
	RuntimeLibraryInstall.$1: \
	$(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%)
	.PHONY: RuntimeLibraryInstall.$1
	endef
	$(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib))))

	# Hook into the standard Makefile rules.
	all-local:: $(RuntimeDirs:%=RuntimeLibrary.%)
	install-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%)
	clean-local:: CleanRuntimeLibraries

	endif
	endif
	endif