external/bsd/llvm/dist/clang/runtime/compiler-rt/Makefile

   1 ##===- clang/runtime/compiler-rt/Makefile ------------------*- Makefile -*-===##
   2 #
   3 #                     The LLVM Compiler Infrastructure
   4 #
   5 # This file is distributed under the University of Illinois Open Source
   6 # License. See LICENSE.TXT for details.
   7 #
   8 ##===----------------------------------------------------------------------===##
   9 #
  10 # This file defines support for building the Clang runtime libraries (which are
  11 # implemented by compiler-rt) and placing them in the proper locations in the
  12 # Clang resources directory (i.e., where the driver expects them).
  13 #
  14 ##===----------------------------------------------------------------------===##
  15
  16 CLANG_LEVEL := ../..
  17 include $(CLANG_LEVEL)/Makefile
  18
  19 CLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \
  20         $(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc))
  21
  22 ResourceDir := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/clang/$(CLANG_VERSION)
  23 PROJ_resources := $(DESTDIR)$(PROJ_prefix)/lib/clang/$(CLANG_VERSION)
  24
  25 ResourceLibDir := $(ResourceDir)/lib
  26 ResourceIncludeDir := $(ResourceDir)/include
  27 PROJ_resources_lib := $(PROJ_resources)/lib
  28 PROJ_resources_include := $(PROJ_resources)/include
  29
  30 # Expect compiler-rt to be in llvm/projects/compiler-rt
  31 COMPILERRT_SRC_ROOT := $(LLVM_SRC_ROOT)/projects/compiler-rt
  32
  33 # We don't currently support building runtime libraries when we are
  34 # cross-compiling. The issue is that we really want to be set up so that the
  35 # available compiler targets are independent of the current build.
  36 #
  37 # Since we have to build the runtime libraries for the target, it requires we
  38 # have a cross compiler from the build machine to the target. Although in the
  39 # case where for the current build (host == target), we do have such a cross
  40 # compiler, but not defined in a way that is easy for us to reuse. Regardless,
  41 # that also wouldn't help for other possible compiler configurations.
  42 #
  43 # Thus, the simple set up we currently use is to assume that we will be using
  44 # the just built Clang to compile the compiler-rt libraries. As we grow better
  45 # cross compilation support inside Clang and tool support in LLVM, this makes it
  46 # easier for us to achieve the goal of having the compiler targets be easily
  47 # selected at configure time. However, this design does currently preclude the
  48 # building of compiler-rt libraries when the Clang itself is being cross
  49 # compiled.
  50 #
  51 # There are three possible solutions:
  52 #  1. Require building a build-target version of Clang when cross compiling. This
  53 #     is simplest, but als greatly increases the build time of cross builds.
  54 #
  55 #  2. Require cross builds have a build-target version of Clang available for
  56 #     use. This is a reasonable compromise on #1, as the compiler-rt libraries
  57 #     are simple enough that there is not a strong desire to ensure they are
  58 #     built with the exact version of Clang being used. Similarly, as Clang
  59 #     becomes a better cross compiler it is also increasingly more likely that
  60 #     the cross compiler being used will already be a version of Clang.
  61 #
  62 #  3. Come up with an alternate mechanism to define all the toolchain
  63 #     information that compiler-rt would need to build libraries for all the
  64 #     requested targets. This might be a simple short term solution, but is
  65 #     likely to be unwieldy and irritating to maintain in the long term.
  66 ifneq ($(LLVM_CROSS_COMPILING),1)
  67 ifneq ($(CLANG_NO_RUNTIME),1)
  68 ifeq ($(shell test -d $(COMPILERRT_SRC_ROOT) && echo OK),OK)
  69
  70 # Select the compiler-rt configuration to use, and install directory.
  71 #
  72 # FIXME: Eventually, we want some kind of configure support for this. We want to
  73 # build/install runtime libraries for as many targets as clang was configured to
  74 # support.
  75 RuntimeDirs :=
  76 ifeq ($(OS),Darwin)
  77 RuntimeDirs += darwin macho_embedded
  78 RuntimeLibrary.darwin.Configs := \
  79         eprintf.a 10.4.a osx.a cc_kext.a \
  80         asan_osx_dynamic.dylib \
  81         profile_osx.a \
  82         ubsan_osx.a
  83
  84 IOS_SDK := $(shell xcrun --show-sdk-path -sdk iphoneos 2> /dev/null)
  85 IOSSIM_SDK := $(shell xcrun --show-sdk-path -sdk iphonesimulator 2> /dev/null)
  86
  87 ifneq ($(IOS_SDK)$(IOSSIM_SDK),)
  88 RuntimeLibrary.darwin.Configs += ios.a profile_ios.a
  89 endif
  90
  91 ifneq ($(IOS_SDK),)
  92 RuntimeLibrary.darwin.Configs += cc_kext_ios5.a
  93 endif
  94
  95 ifneq ($(IOSSIM_SDK),)
  96 RuntimeLibrary.darwin.Configs += asan_iossim_dynamic.dylib
  97 endif
  98
  99 RuntimeLibrary.macho_embedded.Configs := \
 100         hard_static.a hard_pic.a
 101 ifneq (,$(findstring ARM,$(TARGETS_TO_BUILD)))
 102 RuntimeLibrary.macho_embedded.Configs += \
 103         soft_static.a soft_pic.a
 104 endif
 105 endif
 106
 107 # On Linux, include a library which has all the runtime functions.
 108 ifeq ($(OS),Linux)
 109 RuntimeDirs += linux
 110 RuntimeLibrary.linux.Configs :=
 111
 112 # TryCompile compiler source flags
 113 # Returns exit code of running a compiler invocation.
 114 TryCompile = \
 115   $(shell \
 116     cflags=""; \
 117     for flag in $(3); do \
 118       cflags="$$cflags $$flag"; \
 119     done; \
 120     $(1) $$cflags $(2) -o /dev/null > /dev/null 2> /dev/null ; \
 121     echo $$?)
 122
 123 # We try to build 32-bit runtimes both on 32-bit hosts and 64-bit hosts.
 124 Runtime32BitConfigs = \
 125         builtins-i386.a profile-i386.a san-i386.a asan-i386.a asan_cxx-i386.a \
 126         ubsan-i386.a ubsan_cxx-i386.a
 127
 128 # We currently only try to generate runtime libraries on x86.
 129 ifeq ($(ARCH),x86)
 130 RuntimeLibrary.linux.Configs += $(Runtime32BitConfigs)
 131 endif
 132
 133 ifeq ($(ARCH),x86_64)
 134 RuntimeLibrary.linux.Configs += \
 135         builtins-x86_64.a profile-x86_64.a san-x86_64.a asan-x86_64.a \
 136         asan_cxx-x86_64.a tsan-x86_64.a msan-x86_64.a ubsan-x86_64.a \
 137         ubsan_cxx-x86_64.a dfsan-x86_64.a lsan-x86_64.a
 138 # We need to build 32-bit ASan/UBsan libraries on 64-bit platform, and add them
 139 # to the list of runtime libraries to make
 140 # "clang -fsanitize=(address|undefined) -m32" work.
 141 # We check that Clang can produce working 32-bit binaries by compiling a simple
 142 # executable.
 143 test_source = $(LLVM_SRC_ROOT)/tools/clang/runtime/compiler-rt/clang_linux_test_input.c
 144 ifeq ($(call TryCompile,$(ToolDir)/clang,$(test_source),-m32),0)
 145 RuntimeLibrary.linux.Configs += $(Runtime32BitConfigs)
 146 endif
 147 ifneq ($(LLVM_ANDROID_TOOLCHAIN_DIR),)
 148 RuntimeLibrary.linux.Configs += asan-arm-android.so
 149 endif
 150 endif
 151
 152 endif
 153
 154 ####
 155 # The build rules below are designed to be generic and should only need to be
 156 # modified based on changes in the compiler-rt layout or build system.
 157 ####
 158
 159 # Rule to build the compiler-rt libraries we need.
 160 #
 161 # We build all the libraries in a single shot to avoid recursive make as much as
 162 # possible.
 163 BuildRuntimeLibraries:
 164         $(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
 165           ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
 166           ProjObjRoot=$(PROJ_OBJ_DIR) \
 167           CC="$(ToolDir)/clang" \
 168           VERBOSE=$(VERBOSE) \
 169           LLVM_ANDROID_TOOLCHAIN_DIR="$(LLVM_ANDROID_TOOLCHAIN_DIR)" \
 170           $(RuntimeDirs:%=clang_%)
 171 .PHONY: BuildRuntimeLibraries
 172 CleanRuntimeLibraries:
 173         $(Verb) $(MAKE) -C $(COMPILERRT_SRC_ROOT) \
 174           ProjSrcRoot=$(COMPILERRT_SRC_ROOT) \
 175           ProjObjRoot=$(PROJ_OBJ_DIR) \
 176           VERBOSE=$(VERBOSE) \
 177           clean
 178 .PHONY: CleanRuntimeLibraries
 179 RuntimeHeader: $(ResourceIncludeDir)/sanitizer
 180
 181 $(PROJ_resources_lib):
 182         $(Verb) $(MKDIR) $@
 183
 184 $(ResourceIncludeDir):
 185         $(Verb) $(MKDIR) $@
 186
 187 $(ResourceIncludeDir)/sanitizer: $(ResourceIncludeDir)
 188         $(Verb) $(MKDIR) $@
 189         $(Verb) cp $(COMPILERRT_SRC_ROOT)/include/sanitizer/*.h $@
 190
 191 # Expand rules for copying/installing each individual library. We can't use
 192 # implicit rules here because we need to match against multiple things.
 193 define RuntimeLibraryTemplate
 194 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a: BuildRuntimeLibraries
 195         @true
 196 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.so: BuildRuntimeLibraries
 197         @true
 198 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.dylib: BuildRuntimeLibraries
 199         @true
 200 .PRECIOUS: $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a
 201
 202 # Rule to copy the libraries to their resource directory location.
 203 $(ResourceLibDir)/$1/libclang_rt.%.a: \
 204                 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.a \
 205                 $(ResourceLibDir)/$1/.dir
 206         $(Echo) Copying runtime library $1/$$* to build dir
 207         $(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.a $$@
 208 $(ResourceLibDir)/$1/libclang_rt.%.so: \
 209                 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.so \
 210                 $(ResourceLibDir)/$1/.dir
 211         $(Echo) Copying runtime library $1/$$* to build dir
 212         $(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.so $$@
 213 $(ResourceLibDir)/$1/libclang_rt.%.dylib: \
 214                 $(PROJ_OBJ_DIR)/clang_$1/%/libcompiler_rt.dylib \
 215                 $(ResourceLibDir)/$1/.dir
 216         $(Echo) Copying runtime library $1/$$* to build dir
 217         $(Verb) cp $(PROJ_OBJ_DIR)/clang_$1/$$*/libcompiler_rt.dylib $$@
 218 RuntimeLibrary.$1: \
 219                 $(RuntimeLibrary.$1.Configs:%=$(ResourceLibDir)/$1/libclang_rt.%)
 220 .PHONY: RuntimeLibrary.$1
 221
 222 $(PROJ_resources_lib)/$1: $(PROJ_resources_lib)
 223         $(Verb) $(MKDIR) $$@
 224
 225 $(PROJ_resources_lib)/$1/libclang_rt.%.a: \
 226                 $(ResourceLibDir)/$1/libclang_rt.%.a | $(PROJ_resources_lib)/$1
 227         $(Echo) Installing compiler runtime library: $1/$$*
 228         $(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
 229 $(PROJ_resources_lib)/$1/libclang_rt.%.so: \
 230                 $(ResourceLibDir)/$1/libclang_rt.%.so | $(PROJ_resources_lib)/$1
 231         $(Echo) Installing compiler runtime library: $1/$$*
 232         $(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
 233 $(PROJ_resources_lib)/$1/libclang_rt.%.dylib: \
 234                 $(ResourceLibDir)/$1/libclang_rt.%.dylib | $(PROJ_resources_lib)/$1
 235         $(Echo) Installing compiler runtime library: $1/$$*
 236         $(Verb) $(DataInstall) $$< $(PROJ_resources_lib)/$1
 237
 238 # Rule to install runtime libraries.
 239 RuntimeLibraryInstall.$1: \
 240                 $(RuntimeLibrary.$1.Configs:%=$(PROJ_resources_lib)/$1/libclang_rt.%)
 241 .PHONY: RuntimeLibraryInstall.$1
 242 endef
 243 $(foreach lib,$(RuntimeDirs), $(eval $(call RuntimeLibraryTemplate,$(lib))))
 244
 245 $(PROJ_resources_include):
 246         $(Verb) $(MKDIR) $@
 247
 248 $(PROJ_resources_include)/sanitizer: $(ResourceIncludeDir)/sanitizer $(PROJ_resources_include)
 249         $(Verb) $(MKDIR) $@
 250         $(Echo) Installing compiler runtime headers
 251         $(Verb) $(DataInstall) $(ResourceIncludeDir)/sanitizer/* \
 252                                $(PROJ_resources_include)/sanitizer
 253
 254 RuntimeHeaderInstall: $(PROJ_resources_include)/sanitizer
 255 .PHONY: RuntimeHeaderInstall
 256
 257 # Hook into the standard Makefile rules.
 258 all-local:: $(RuntimeDirs:%=RuntimeLibrary.%) RuntimeHeader
 259 install-local:: $(RuntimeDirs:%=RuntimeLibraryInstall.%) RuntimeHeaderInstall
 260 clean-local:: CleanRuntimeLibraries
 261
 262 endif
 263 endif
 264 endif