Chandler Carruth | d51e0a0 | 2012-04-04 22:12:04 +0000 | [diff] [blame] | 1 | # CMake build for CompilerRT. |
| 2 | # |
| 3 | # This build assumes that CompilerRT is checked out into the |
| 4 | # 'projects/compiler-rt' inside of an LLVM tree, it is not a stand-alone build |
| 5 | # system. |
| 6 | # |
| 7 | # An important constraint of the build is that it only produces libraries |
| 8 | # based on the ability of the host toolchain to target various platforms. |
| 9 | |
| 10 | include(LLVMParseArguments) |
| 11 | |
Chandler Carruth | a765ffc | 2012-06-25 08:40:10 +0000 | [diff] [blame] | 12 | # The CompilerRT build system requires CMake version 2.8.8 or higher in order |
| 13 | # to use its support for building convenience "libraries" as a collection of |
| 14 | # .o files. This is particularly useful in producing larger, more complex |
| 15 | # runtime libraries. |
| 16 | cmake_minimum_required(VERSION 2.8.8) |
| 17 | |
Chandler Carruth | d51e0a0 | 2012-04-04 22:12:04 +0000 | [diff] [blame] | 18 | # FIXME: Below we assume that the target build of LLVM/Clang is x86, which is |
| 19 | # not at all valid. Much of this can be fixed just by switching to use |
| 20 | # a just-built-clang binary for the compiles. |
| 21 | |
| 22 | # Detect whether the current target platform is 32-bit or 64-bit, and setup |
| 23 | # the correct commandline flags needed to attempt to target 32-bit and 64-bit. |
Alexey Samsonov | bd17004 | 2012-08-07 12:14:29 +0000 | [diff] [blame] | 24 | if(CMAKE_SIZEOF_VOID_P EQUAL 4 OR LLVM_BUILD_32_BITS) |
Chandler Carruth | d51e0a0 | 2012-04-04 22:12:04 +0000 | [diff] [blame] | 25 | set(TARGET_X86_64_CFLAGS "-m64") |
| 26 | set(TARGET_I386_CFLAGS "") |
| 27 | else() |
| 28 | if(NOT CMAKE_SIZEOF_VOID_P EQUAL 8) |
| 29 | message(FATAL_ERROR "Please use a sane architecture with 4 or 8 byte pointers.") |
| 30 | endif() |
| 31 | set(TARGET_X86_64_CFLAGS "") |
| 32 | set(TARGET_I386_CFLAGS "-m32") |
| 33 | endif() |
| 34 | |
| 35 | # Try to compile a very simple source file to ensure we can target the given |
| 36 | # platform. We use the results of these tests to build only the various target |
| 37 | # runtime libraries supported by our current compilers cross-compiling |
| 38 | # abilities. |
| 39 | set(SIMPLE_SOURCE64 ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/simple64.c) |
| 40 | file(WRITE ${SIMPLE_SOURCE64} "#include <stdlib.h>\nint main() {}") |
| 41 | try_compile(CAN_TARGET_X86_64 ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE64} |
| 42 | COMPILE_DEFINITIONS "${TARGET_X86_64_CFLAGS}" |
| 43 | CMAKE_FLAGS "-DCMAKE_EXE_LINKER_FLAGS:STRING=${TARGET_X86_64_CFLAGS}") |
| 44 | |
| 45 | set(SIMPLE_SOURCE32 ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/simple32.c) |
| 46 | file(WRITE ${SIMPLE_SOURCE32} "#include <stdlib.h>\nint main() {}") |
| 47 | try_compile(CAN_TARGET_I386 ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE32} |
| 48 | COMPILE_DEFINITIONS "${TARGET_I386_CFLAGS}" |
| 49 | CMAKE_FLAGS "-DCMAKE_EXE_LINKER_FLAGS:STRING=${TARGET_I386_CFLAGS}") |
| 50 | |
Alexey Samsonov | fe51abb | 2012-08-10 14:45:52 +0000 | [diff] [blame] | 51 | function(filter_available_targets out_var) |
| 52 | set(archs) |
| 53 | foreach(arch ${ARGN}) |
| 54 | if(${arch} STREQUAL "x86_64" AND CAN_TARGET_X86_64) |
| 55 | list(APPEND archs ${arch}) |
| 56 | elseif (${arch} STREQUAL "i386" AND CAN_TARGET_I386) |
| 57 | list(APPEND archs ${arch}) |
| 58 | endif() |
| 59 | endforeach() |
| 60 | set(${out_var} ${archs} PARENT_SCOPE) |
| 61 | endfunction() |
| 62 | |
Chandler Carruth | 60ab090 | 2012-08-29 00:13:11 +0000 | [diff] [blame] | 63 | # Provide some common commmandline flags for Sanitizer runtimes. |
| 64 | set(SANITIZER_COMMON_CFLAGS |
| 65 | -fPIC |
Alexey Samsonov | 0f7d4a4 | 2012-09-05 09:00:03 +0000 | [diff] [blame] | 66 | -fno-builtin |
Chandler Carruth | 60ab090 | 2012-08-29 00:13:11 +0000 | [diff] [blame] | 67 | -fno-exceptions |
Alexey Samsonov | 0f7d4a4 | 2012-09-05 09:00:03 +0000 | [diff] [blame] | 68 | -fomit-frame-pointer |
Chandler Carruth | 60ab090 | 2012-08-29 00:13:11 +0000 | [diff] [blame] | 69 | -funwind-tables |
| 70 | -fvisibility=hidden |
Alexey Samsonov | 0f7d4a4 | 2012-09-05 09:00:03 +0000 | [diff] [blame] | 71 | -O3 |
Chandler Carruth | 60ab090 | 2012-08-29 00:13:11 +0000 | [diff] [blame] | 72 | ) |
| 73 | if(SUPPORTS_NO_VARIADIC_MACROS_FLAG) |
| 74 | list(APPEND SANITIZER_COMMON_CFLAGS -Wno-variadic-macros) |
| 75 | endif() |
| 76 | check_cxx_compiler_flag(-Wno-c99-extensions |
| 77 | SUPPORTS_NO_C99_EXTENSIONS_FLAG) |
| 78 | if(SUPPORTS_NO_C99_EXTENSIONS_FLAG) |
| 79 | list(APPEND SANITIZER_COMMON_CFLAGS -Wno-c99-extensions) |
| 80 | endif() |
Alexey Samsonov | 0f7d4a4 | 2012-09-05 09:00:03 +0000 | [diff] [blame] | 81 | if(APPLE) |
| 82 | list(APPEND SANITIZER_COMMON_CFLAGS -mmacosx-version-min=10.5) |
| 83 | endif() |
Chandler Carruth | 60ab090 | 2012-08-29 00:13:11 +0000 | [diff] [blame] | 84 | |
Chandler Carruth | 984f6cf | 2012-06-27 09:01:24 +0000 | [diff] [blame] | 85 | # Because compiler-rt spends a lot of time setting up custom compile flags, |
| 86 | # define a handy helper function for it. The compile flags setting in CMake |
| 87 | # has serious issues that make its syntax challenging at best. |
| 88 | function(set_target_compile_flags target) |
| 89 | foreach(arg ${ARGN}) |
| 90 | set(argstring "${argstring} ${arg}") |
| 91 | endforeach() |
| 92 | set_property(TARGET ${target} PROPERTY COMPILE_FLAGS "${argstring}") |
| 93 | endfunction() |
| 94 | |
Evgeniy Stepanov | 34fc56c | 2012-09-11 11:55:45 +0000 | [diff] [blame^] | 95 | function(set_target_link_flags target) |
| 96 | foreach(arg ${ARGN}) |
| 97 | set(argstring "${argstring} ${arg}") |
| 98 | endforeach() |
| 99 | set_property(TARGET ${target} PROPERTY LINK_FLAGS "${argstring}") |
| 100 | endfunction() |
| 101 | |
Alexey Samsonov | 70a7095 | 2012-09-11 10:26:54 +0000 | [diff] [blame] | 102 | # Compute the Clang version from the LLVM version. |
| 103 | # FIXME: We should be able to reuse CLANG_VERSION variable calculated |
| 104 | # in Clang cmake files, instead of copying the rules here. |
| 105 | string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION |
| 106 | ${PACKAGE_VERSION}) |
| 107 | # Setup the paths where compiler-rt runtimes and headers should be stored. |
Evgeniy Stepanov | 7e72e45 | 2012-09-11 11:35:18 +0000 | [diff] [blame] | 108 | set(LIBCLANG_INSTALL_PATH lib${LLVM_LIBDIR_SUFFIX}/clang/${CLANG_VERSION}) |
Alexey Samsonov | 70a7095 | 2012-09-11 10:26:54 +0000 | [diff] [blame] | 109 | string(TOLOWER ${CMAKE_SYSTEM_NAME} LIBCLANG_OS_DIR) |
| 110 | |
| 111 | # Install compiler-rt headers. |
| 112 | install(DIRECTORY include/ |
| 113 | DESTINATION ${LIBCLANG_INSTALL_PATH}/include |
| 114 | FILES_MATCHING |
| 115 | PATTERN "*.h" |
| 116 | PATTERN ".svn" EXCLUDE |
| 117 | ) |
| 118 | |
| 119 | # Call add_clang_compiler_rt_libraries to make sure that targets are built |
| 120 | # and installed in the directories where Clang driver expects to find them. |
| 121 | macro(add_clang_compiler_rt_libraries) |
| 122 | # Setup output directories so that clang in build tree works. |
| 123 | set_target_properties(${ARGN} PROPERTIES |
| 124 | ARCHIVE_OUTPUT_DIRECTORY |
| 125 | ${LLVM_BINARY_DIR}/lib/clang/${CLANG_VERSION}/lib/${LIBCLANG_OS_DIR} |
| 126 | LIBRARY_OUTPUT_DIRECTORY |
| 127 | ${LLVM_BINARY_DIR}/lib/clang/${CLANG_VERSION}/lib/${LIBCLANG_OS_DIR} |
| 128 | ) |
| 129 | # Add installation command. |
| 130 | install(TARGETS ${ARGN} |
| 131 | ARCHIVE DESTINATION ${LIBCLANG_INSTALL_PATH}/lib/${LIBCLANG_OS_DIR} |
| 132 | LIBRARY DESTINATION ${LIBCLANG_INSTALL_PATH}/lib/${LIBCLANG_OS_DIR} |
| 133 | ) |
| 134 | endmacro(add_clang_compiler_rt_libraries) |
| 135 | |
Chandler Carruth | d865fec | 2012-08-29 02:27:54 +0000 | [diff] [blame] | 136 | # Add the public header's directory to the includes for all of compiler-rt. |
| 137 | include_directories(include) |
| 138 | |
Alexey Samsonov | c5fee8e | 2012-09-04 14:52:21 +0000 | [diff] [blame] | 139 | # Build utils before building compiler-rt library. |
| 140 | add_subdirectory(utils) |
| 141 | |
Chandler Carruth | d51e0a0 | 2012-04-04 22:12:04 +0000 | [diff] [blame] | 142 | add_subdirectory(lib) |
| 143 | |
| 144 | if(LLVM_INCLUDE_TESTS) |
Chandler Carruth | 2e82a8b | 2012-06-22 20:17:27 +0000 | [diff] [blame] | 145 | # Currently the tests have not been ported to CMake, so disable this |
| 146 | # directory. |
| 147 | # |
| 148 | #add_subdirectory(test) |
Chandler Carruth | d51e0a0 | 2012-04-04 22:12:04 +0000 | [diff] [blame] | 149 | endif() |