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Enable WMO for release builds #5059

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Merged
merged 4 commits into from
Aug 9, 2024
Merged

Enable WMO for release builds #5059

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7e20337
Enable whole-module-optimization for release builds
jmschonfeld Aug 8, 2024
0cca2f1
Address feedback
jmschonfeld Aug 8, 2024
a99ecc2
Fix build failures
jmschonfeld Aug 8, 2024
e20e3ad
Don't enable WMO on Windows
jmschonfeld Aug 9, 2024
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10 changes: 10 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,16 @@ if(NOT SWIFT_SYSTEM_NAME)
endif()
endif()

# Don't enable WMO on Windows due to linker failures
if(NOT CMAKE_SYSTEM_NAME STREQUAL Windows)
# Enable whole module optimization for release builds & incremental for debug builds
if(POLICY CMP0157)
set(CMAKE_Swift_COMPILATION_MODE "$<IF:$<CONFIG:Release>,wholemodule,incremental>")
else()
add_compile_options($<$<AND:$<COMPILE_LANGUAGE:Swift>,$<CONFIG:Release>>:-wmo>)
endif()
endif()

set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
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