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https://github.com/Kitware/CMake.git
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dfa8263f4b
Honor the `INTERPROCEDURAL_OPTIMIZATION` target property for GNU compilers by activating their link-time-optimization (LTO) flags.
40 lines
1.3 KiB
CMake
40 lines
1.3 KiB
CMake
# 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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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_${lang}_COMPILE_OPTIONS_EXTERNAL_TOOLCHAIN "--gcc-toolchain=")
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endif()
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set(_CMAKE_IPO_SUPPORTED_BY_CMAKE NO)
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set(_CMAKE_IPO_MAY_BE_SUPPORTED_BY_COMPILER NO)
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unset(CMAKE_${lang}_COMPILE_OPTIONS_IPO)
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unset(CMAKE_${lang}_ARCHIVE_CREATE_IPO)
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unset(CMAKE_${lang}_ARCHIVE_APPEND_IPO)
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unset(CMAKE_${lang}_ARCHIVE_FINISH_IPO)
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endmacro()
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endif()
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