| # Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| # file Copyright.txt or https://cmake.org/licensing for details. |
| |
| |
| # This module is shared by multiple languages; use include blocker. |
| if(__COMPILER_CLANG) |
| return() |
| endif() |
| set(__COMPILER_CLANG 1) |
| |
| include(Compiler/CMakeCommonCompilerMacros) |
| |
| if("x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC" |
| OR "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC" |
| OR "x${CMAKE_Fortran_SIMULATE_ID}" STREQUAL "xMSVC") |
| macro(__compiler_clang lang) |
| endmacro() |
| else() |
| include(Compiler/GNU) |
| |
| macro(__compiler_clang lang) |
| __compiler_gnu(${lang}) |
| set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE") |
| # Link options for PIE are already set in 'Compiler/GNU.cmake' |
| # but clang may require alternate syntax on some platforms |
| if (APPLE) |
| set(CMAKE_${lang}_LINK_OPTIONS_PIE ${CMAKE_${lang}_COMPILE_OPTIONS_PIE} -Xlinker -pie) |
| set(CMAKE_${lang}_LINK_OPTIONS_NO_PIE -Xlinker -no_pie) |
| endif() |
| set(CMAKE_INCLUDE_SYSTEM_FLAG_${lang} "-isystem ") |
| set(CMAKE_${lang}_COMPILE_OPTIONS_VISIBILITY "-fvisibility=") |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4.0) |
| set(CMAKE_${lang}_COMPILE_OPTIONS_TARGET "-target ") |
| set(CMAKE_${lang}_COMPILE_OPTIONS_EXTERNAL_TOOLCHAIN "-gcc-toolchain ") |
| else() |
| set(CMAKE_${lang}_COMPILE_OPTIONS_TARGET "--target=") |
| set(CMAKE_${lang}_COMPILE_OPTIONS_EXTERNAL_TOOLCHAIN "--gcc-toolchain=") |
| endif() |
| set(CMAKE_${lang}_LINKER_WRAPPER_FLAG "-Xlinker" " ") |
| set(CMAKE_${lang}_LINKER_WRAPPER_FLAG_SEP) |
| |
| if(CMAKE_${lang}_COMPILER_TARGET) |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4.0) |
| list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "-target" "${CMAKE_${lang}_COMPILER_TARGET}") |
| else() |
| list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "--target=${CMAKE_${lang}_COMPILER_TARGET}") |
| endif() |
| endif() |
| |
| set(_CMAKE_${lang}_IPO_SUPPORTED_BY_CMAKE YES) |
| set(_CMAKE_${lang}_IPO_MAY_BE_SUPPORTED_BY_COMPILER YES) |
| |
| string(COMPARE EQUAL "${CMAKE_${lang}_COMPILER_ID}" "AppleClang" __is_apple_clang) |
| |
| # '-flto=thin' available since Clang 3.9 and Xcode 8 |
| # * http://clang.llvm.org/docs/ThinLTO.html#clang-llvm |
| # * https://trac.macports.org/wiki/XcodeVersionInfo |
| set(_CMAKE_LTO_THIN TRUE) |
| if(__is_apple_clang) |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 8.0) |
| set(_CMAKE_LTO_THIN FALSE) |
| endif() |
| else() |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.9) |
| set(_CMAKE_LTO_THIN FALSE) |
| endif() |
| endif() |
| |
| if(_CMAKE_LTO_THIN) |
| set(CMAKE_${lang}_COMPILE_OPTIONS_IPO "-flto=thin") |
| else() |
| set(CMAKE_${lang}_COMPILE_OPTIONS_IPO "-flto") |
| endif() |
| |
| if(ANDROID) |
| # https://github.com/android-ndk/ndk/issues/242 |
| set(CMAKE_${lang}_LINK_OPTIONS_IPO "-fuse-ld=gold") |
| endif() |
| |
| if(ANDROID OR __is_apple_clang) |
| set(__ar "${CMAKE_AR}") |
| set(__ranlib "${CMAKE_RANLIB}") |
| else() |
| set(__ar "${CMAKE_${lang}_COMPILER_AR}") |
| set(__ranlib "${CMAKE_${lang}_COMPILER_RANLIB}") |
| endif() |
| |
| set(CMAKE_${lang}_ARCHIVE_CREATE_IPO |
| "\"${__ar}\" cr <TARGET> <LINK_FLAGS> <OBJECTS>" |
| ) |
| |
| set(CMAKE_${lang}_ARCHIVE_APPEND_IPO |
| "\"${__ar}\" r <TARGET> <LINK_FLAGS> <OBJECTS>" |
| ) |
| |
| set(CMAKE_${lang}_ARCHIVE_FINISH_IPO |
| "\"${__ranlib}\" <TARGET>" |
| ) |
| endmacro() |
| endif() |