Makefile revision 7df67e6892d74a6653473089473166a30608f416
1da79da2a8748e4d58eeedd1b7f39bf4fb8a86d10Bob Wilson##===- clang/runtime/compiler-rt/Makefile ------------------*- Makefile -*-===## 2562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# 3253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar# The LLVM Compiler Infrastructure 4253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar# 5253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar# This file is distributed under the University of Illinois Open Source 6253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar# License. See LICENSE.TXT for details. 7562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# 8562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson##===----------------------------------------------------------------------===## 9562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# 10562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# This file defines support for building the Clang runtime libraries (which are 11562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# implemented by compiler-rt) and placing them in the proper locations in the 12562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Clang resources directory (i.e., where the driver expects them). 13562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# 14253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar##===----------------------------------------------------------------------===## 15253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar 16484fc57c8d2d3ba645a03f9e294dcebc5aacaf44Nick LewyckyCLANG_LEVEL := ../.. 17562627d782393c0d8045625a53a97f4fbad091bcOwen Andersoninclude $(CLANG_LEVEL)/Makefile 18253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar 19562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonCLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \ 20562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc)) 21bc817cffbca01c879f13e9290d94797f6caafc7aDaniel Dunbar 22562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonResourceDir := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/clang/$(CLANG_VERSION) 23562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonPROJ_resources := $(DESTDIR)$(PROJ_prefix)/lib/clang/$(CLANG_VERSION) 24562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 25562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonResourceLibDir := $(ResourceDir)/lib 26562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonPROJ_resources_lib := $(PROJ_resources)/lib 27562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 28562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Expect compiler-rt to be in llvm/projects/compiler-rt 29562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonCOMPILERRT_SRC_ROOT := $(LLVM_SRC_ROOT)/projects/compiler-rt 30562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 31562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Additional flags to pass to Clang. 32562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonCLANG_CCFLAGS := -no-integrated-as 33562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 34e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# We don't currently support building runtime libraries when we are 35e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# cross-compiling. The issue is that we really want to be set up so that the 36e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# available compiler targets are independent of the current build. 37e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# 38e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# Since we have to build the runtime libraries for the target, it requires we 39e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# have a cross compiler from the build machine to the target. Although in the 40e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# case where for the current build (host == target), we do have such a cross 41e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# compiler, but not defined in a way that is easy for us to reuse. Regardless, 42e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# that also wouldn't help for other possible compiler configurations. 43e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# 44e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# Thus, the simple set up we currently use is to assume that we will be using 45e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# the just built Clang to compile the compiler-rt libraries. As we grow better 46e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# cross compilation support inside Clang and tool support in LLVM, this makes it 47e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# easier for us to achieve the goal of having the compiler targets be easily 48e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# selected at configure time. However, this design does currently preclude the 49e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# building of compiler-rt libraries when the Clang itself is being cross 50e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# compiled. 51e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# 52e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# There are three possible solutions: 53e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# 1. Require building a build-target version of Clang when cross compiling. This 54e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# is simplest, but als greatly increases the build time of cross builds. 55e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# 56e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# 2. Require cross builds have a build-target version of Clang available for 57e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# use. This is a reasonable compromise on #1, as the compiler-rt libraries 58e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# are simple enough that there is not a strong desire to ensure they are 59e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# built with the exact version of Clang being used. Similarly, as Clang 60e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# becomes a better cross compiler it is also increasingly more likely that 61e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# the cross compiler being used will already be a version of Clang. 62e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# 63e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# 3. Come up with an alternate mechanism to define all the toolchain 64e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# information that compiler-rt would need to build libraries for all the 65e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# requested targets. This might be a simple short term solution, but is 66e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# likely to be unwieldly and irritating to maintain in the long term. 67e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbarifneq ($(LLVM_CROSS_COMPILING),1) 68562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonifneq ($(CLANG_NO_RUNTIME),1) 69562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonifeq ($(shell test -d $(COMPILERRT_SRC_ROOT) && echo OK),OK) 70562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 71562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Select the compiler-rt configuration to use, and install directory. 72562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# 73562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# FIXME: Eventually, we want some kind of configure support for this. We want to 74562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# build/install runtime libraries for as many targets as clang was configured to 75562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# support. 76562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonRuntimeDirs := 77562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonifeq ($(OS),Darwin) 78562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonRuntimeDirs += darwin 79f471487ff1e673531543576bc170898c2ab19f41Daniel DunbarRuntimeLibrary.darwin.Configs := \ 80f471487ff1e673531543576bc170898c2ab19f41Daniel Dunbar eprintf 10.4 osx ios cc_kext \ 8194b54ea787e439496fde16b3d2882d6d1b22d4f0Daniel Dunbar asan_osx profile_osx profile_ios 82db0ab63998eb9aad0ead03d3f76f095f9b1eb036Daniel Dunbar 83562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# On Darwin, fake Clang into using the iOS assembler (since compiler-rt wants to 84562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# build ARM bits). 85562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonCLANG_CCFLAGS += -ccc-install-dir \ 86562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/ 87562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonendif 88ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbar 89ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbar# On Linux, include a library which has all the runtime functions. 90ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbarifeq ($(OS),Linux) 91ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel DunbarRuntimeDirs += linux 92ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel DunbarRuntimeLibrary.linux.Configs := 93ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbar 94ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbar# We currently only try to generate runtime libraries on x86. 95ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbarifeq ($(ARCH),x86) 967df67e6892d74a6653473089473166a30608f416Daniel DunbarRuntimeLibrary.linux.Configs += \ 977df67e6892d74a6653473089473166a30608f416Daniel Dunbar full-i386 profile-i386 asan-i386 98ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbarendif 99ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbarifeq ($(ARCH),x86_64) 1007df67e6892d74a6653473089473166a30608f416Daniel DunbarRuntimeLibrary.linux.Configs += \ 1017df67e6892d74a6653473089473166a30608f416Daniel Dunbar full-x86_64 profile-x86_64 asan-x86_64 102ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbarendif 103ff9865220ccd618cab2d8fbc63e58ac6cd7357f0Daniel Dunbar 104db0ab63998eb9aad0ead03d3f76f095f9b1eb036Daniel Dunbarendif 105253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar 106e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar#### 107e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# The build rules below are designed to be generic and should only need to be 108e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# modified based on changes in the compiler-rt layout or build system. 109e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar#### 110e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar 111562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Rule to build the compiler-rt libraries we need. 112562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# 113562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# We build all the libraries in a single shot to avoid recursive make as much as 114562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# possible. 115562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonBuildRuntimeLibraries: 116562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \ 117562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \ 118562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson ProjObjRoot=$(PROJ_OBJ_DIR) \ 119562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson CC="$(ToolDir)/clang $(CLANG_CCFLAGS)" \ 120562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(RuntimeDirs:%=clang_%) 121562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PHONY: BuildRuntimeLibraries 122562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonCleanRuntimeLibraries: 123562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \ 124562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \ 125562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson ProjObjRoot=$(PROJ_OBJ_DIR) \ 126562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson clean 127562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PHONY: CleanRuntimeLibraries 128562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 129562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(PROJ_resources_lib): 130562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(MKDIR) $@ 131562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 132562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Expand rules for copying/installing each individual library. We can't use 133562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# implicit rules here because we need to match against multiple things. 134562627d782393c0d8045625a53a97f4fbad091bcOwen Andersondefine RuntimeLibraryTemplate 135562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries 136562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson @true 137562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a 138562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 139562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Rule to copy the libraries to their resource directory location. 140562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(ResourceLibDir)/$1/libclang_rt.%.a: \ 141562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \ 142562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(ResourceLibDir)/$1/.dir 143562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Echo) Copying runtime library $1/$$* to build dir 144562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@ 145562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonRuntimeLibrary.$1: \ 146562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%.a) 147562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PHONY: RuntimeLibrary.$1 14846bbbdd0111c386c2341919a62c5742f2519efa6Daniel Dunbar 149562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(PROJ_resources_lib)/$1: $(PROJ_resources_lib) 150562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(MKDIR) $$@ 151562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 152562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(PROJ_resources_lib)/$1/libclang_rt.%.a: \ 153562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(ResourceLibDir)/$1/libclang_rt.%.a | $(PROJ_resources_lib)/$1 154562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Echo) Installing compiler runtime library: $1/$$* 155562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1 156562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 157562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Rule to install runtime libraries. 158562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonRuntimeLibraryInstall.$1: \ 159562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%.a) 160562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PHONY: RuntimeLibraryInstall.$1 161562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonendef 162562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib)))) 163562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 164562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Hook into the standard Makefile rules. 165562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonall-local:: $(RuntimeDirs:%=RuntimeLibrary.%) 166562627d782393c0d8045625a53a97f4fbad091bcOwen Andersoninstall-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%) 167562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonclean-local:: CleanRuntimeLibraries 168562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 169562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonendif 170562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonendif 171e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbarendif 172