Makefile revision f471487ff1e673531543576bc170898c2ab19f41
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 \ 81f471487ff1e673531543576bc170898c2ab19f41Daniel Dunbar 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 Andersonifeq ($(OS),Darwin) 86562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonCLANG_CCFLAGS += -ccc-install-dir \ 87562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/ 88562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonendif 89db0ab63998eb9aad0ead03d3f76f095f9b1eb036Daniel Dunbarendif 90253521bacfc70dcc8f8205f8b1192816458beb34Daniel Dunbar 91e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar#### 92e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# The build rules below are designed to be generic and should only need to be 93e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar# modified based on changes in the compiler-rt layout or build system. 94e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar#### 95e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbar 96562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Rule to build the compiler-rt libraries we need. 97562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# 98562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# We build all the libraries in a single shot to avoid recursive make as much as 99562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# possible. 100562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonBuildRuntimeLibraries: 101562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \ 102562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \ 103562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson ProjObjRoot=$(PROJ_OBJ_DIR) \ 104562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson CC="$(ToolDir)/clang $(CLANG_CCFLAGS)" \ 105562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(RuntimeDirs:%=clang_%) 106562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PHONY: BuildRuntimeLibraries 107562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonCleanRuntimeLibraries: 108562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \ 109562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \ 110562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson ProjObjRoot=$(PROJ_OBJ_DIR) \ 111562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson clean 112562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PHONY: CleanRuntimeLibraries 113562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 114562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(PROJ_resources_lib): 115562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(MKDIR) $@ 116562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 117562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Expand rules for copying/installing each individual library. We can't use 118562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# implicit rules here because we need to match against multiple things. 119562627d782393c0d8045625a53a97f4fbad091bcOwen Andersondefine RuntimeLibraryTemplate 120562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries 121562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson @true 122562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a 123562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 124562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Rule to copy the libraries to their resource directory location. 125562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(ResourceLibDir)/$1/libclang_rt.%.a: \ 126562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \ 127562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(ResourceLibDir)/$1/.dir 128562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Echo) Copying runtime library $1/$$* to build dir 129562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@ 130562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonRuntimeLibrary.$1: \ 131562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%.a) 132562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PHONY: RuntimeLibrary.$1 13346bbbdd0111c386c2341919a62c5742f2519efa6Daniel Dunbar 134562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(PROJ_resources_lib)/$1: $(PROJ_resources_lib) 135562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(MKDIR) $$@ 136562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 137562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(PROJ_resources_lib)/$1/libclang_rt.%.a: \ 138562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(ResourceLibDir)/$1/libclang_rt.%.a | $(PROJ_resources_lib)/$1 139562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Echo) Installing compiler runtime library: $1/$$* 140562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1 141562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 142562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Rule to install runtime libraries. 143562627d782393c0d8045625a53a97f4fbad091bcOwen AndersonRuntimeLibraryInstall.$1: \ 144562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson $(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%.a) 145562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson.PHONY: RuntimeLibraryInstall.$1 146562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonendef 147562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson$(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib)))) 148562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 149562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson# Hook into the standard Makefile rules. 150562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonall-local:: $(RuntimeDirs:%=RuntimeLibrary.%) 151562627d782393c0d8045625a53a97f4fbad091bcOwen Andersoninstall-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%) 152562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonclean-local:: CleanRuntimeLibraries 153562627d782393c0d8045625a53a97f4fbad091bcOwen Anderson 154562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonendif 155562627d782393c0d8045625a53a97f4fbad091bcOwen Andersonendif 156e33218a3ceb3a36e4d8163cf04df0c0cae530b27Daniel Dunbarendif 157