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| author | xoviat <xoviat@users.noreply.github.com> | 2018-01-30 19:34:02 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2018-02-23 15:27:57 (GMT) |
| commit | a18147e93328af6754a44c72c563436efe358f42 (patch) | |
| tree | f5156700ee1711569739ae8fb363d5635e57a28a /Modules/Platform/Windows-MSVC.cmake | |
| parent | b89252689cf5d63495de4b0458aa3c239acd01d4 (diff) | |
| download | CMake-a18147e93328af6754a44c72c563436efe358f42.zip CMake-a18147e93328af6754a44c72c563436efe358f42.tar.gz CMake-a18147e93328af6754a44c72c563436efe358f42.tar.bz2 | |
MSVC,Clang,Flang: Add IPO support
Fixes: #17692
Diffstat (limited to 'Modules/Platform/Windows-MSVC.cmake')
| -rw-r--r-- | Modules/Platform/Windows-MSVC.cmake | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Modules/Platform/Windows-MSVC.cmake b/Modules/Platform/Windows-MSVC.cmake index 0737c12..a1f54c0 100644 --- a/Modules/Platform/Windows-MSVC.cmake +++ b/Modules/Platform/Windows-MSVC.cmake @@ -293,6 +293,34 @@ macro(__windows_compiler_msvc lang) set(CMAKE_${lang}_LINK_EXECUTABLE "${_CMAKE_VS_LINK_EXE}<CMAKE_LINKER> ${CMAKE_CL_NOLOGO} <OBJECTS> ${CMAKE_START_TEMP_FILE} /out:<TARGET> /implib:<TARGET_IMPLIB> /pdb:<TARGET_PDB> /version:<TARGET_VERSION_MAJOR>.<TARGET_VERSION_MINOR>${_PLATFORM_LINK_FLAGS} <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <LINK_LIBRARIES>${CMAKE_END_TEMP_FILE}") + if("x${CMAKE_${lang}_COMPILER_ID}" STREQUAL "xMSVC") + set(_CMAKE_${lang}_IPO_SUPPORTED_BY_CMAKE YES) + set(_CMAKE_${lang}_IPO_MAY_BE_SUPPORTED_BY_COMPILER YES) + + set(CMAKE_${lang}_COMPILE_OPTIONS_IPO "/GL") + set(CMAKE_${lang}_LINK_OPTIONS_IPO "/INCREMENTAL:NO" "/LTCG") + string(REPLACE "<LINK_FLAGS> " "/LTCG <LINK_FLAGS> " + CMAKE_${lang}_CREATE_STATIC_LIBRARY_IPO "${CMAKE_${lang}_CREATE_STATIC_LIBRARY}") + elseif("x${CMAKE_${lang}_COMPILER_ID}" STREQUAL "xClang" OR + "x${CMAKE_${lang}_COMPILER_ID}" STREQUAL "xFlang") + set(_CMAKE_${lang}_IPO_SUPPORTED_BY_CMAKE YES) + set(_CMAKE_${lang}_IPO_MAY_BE_SUPPORTED_BY_COMPILER YES) + + # '-flto=thin' available since Clang 3.9 and Xcode 8 + # * http://clang.llvm.org/docs/ThinLTO.html#clang-llvm + # * https://trac.macports.org/wiki/XcodeVersionInfo + set(_CMAKE_LTO_THIN TRUE) + if(CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.9) + set(_CMAKE_LTO_THIN FALSE) + endif() + + if(_CMAKE_LTO_THIN) + set(CMAKE_${lang}_COMPILE_OPTIONS_IPO "-flto=thin") + else() + set(CMAKE_${lang}_COMPILE_OPTIONS_IPO "-flto") + endif() + endif() + if("x${lang}" STREQUAL "xC" OR "x${lang}" STREQUAL "xCXX") if(CMAKE_VS_PLATFORM_TOOLSET MATCHES "v[0-9]+_clang_.*") |