diff options
Diffstat (limited to 'Modules/CMakeSwiftInformation.cmake')
| -rw-r--r-- | Modules/CMakeSwiftInformation.cmake | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/Modules/CMakeSwiftInformation.cmake b/Modules/CMakeSwiftInformation.cmake index a75dfceea1..f524955861 100644 --- a/Modules/CMakeSwiftInformation.cmake +++ b/Modules/CMakeSwiftInformation.cmake @@ -78,9 +78,17 @@ if(CMAKE_GENERATOR STREQUAL "Xcode") set(CMAKE_Swift_FLAGS_MINSIZEREL_INIT "-Osize") else() set(CMAKE_Swift_FLAGS_DEBUG_INIT "-Onone -g -incremental") - set(CMAKE_Swift_FLAGS_RELEASE_INIT "-O -wmo") - set(CMAKE_Swift_FLAGS_RELWITHDEBINFO_INIT "-O -g -wmo") - set(CMAKE_Swift_FLAGS_MINSIZEREL_INIT "-Osize -wmo") + set(CMAKE_Swift_FLAGS_RELEASE_INIT "-O") + set(CMAKE_Swift_FLAGS_RELWITHDEBINFO_INIT "-O -g") + set(CMAKE_Swift_FLAGS_MINSIZEREL_INIT "-Osize") + + # Enable Whole Module Optimization by default unless the old + # C++ driver is being used, which behaves differently under WMO. + if(NOT CMAKE_Swift_COMPILER_USE_OLD_DRIVER) + string(APPEND CMAKE_Swift_FLAGS_RELEASE_INIT " -wmo") + string(APPEND CMAKE_Swift_FLAGS_RELWITHDEBINFO_INIT " -wmo") + string(APPEND CMAKE_Swift_FLAGS_MINSIZEREL_INIT " -wmo") + endif() endif() if(CMAKE_EXECUTABLE_FORMAT STREQUAL "ELF") |