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