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CMake: Add an option to enable IPO

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This commit is contained in:
Alexander Akulich 2022-05-07 12:23:29 +03:00
parent 69e312f5fb
commit 9e8c97c812
1 changed files with 19 additions and 0 deletions
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19
CMakeLists.txt
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@ -126,6 +126,7 @@ option(DEV "Don't generate stuff necessary for packaging" OFF)
option(VULKAN "Enable the vulkan backend" ${AUTO_VULKAN_BACKEND})
option(EXCEPTION_HANDLING "Enable exception handling (only works with Windows as of now)" OFF)
option(IPO "Enable interprocedural optimizations" OFF)
if(CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
include(${PROJECT_SOURCE_DIR}/cmake/toolchains/Emscripten.toolchain)
@ -157,6 +158,21 @@ endif()
set(DBG $<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>)
if(IPO)
if(CMAKE_VERSION VERSION_GREATER 3.9)
include(CheckIPOSupported)
check_ipo_supported(RESULT ipo_supported OUTPUT ipo_output)
if(ipo_supported)
message(STATUS "IPO is enabled")
set(ENABLE_IPO TRUE)
else()
message(WARNING "IPO is not supported: ${ipo_output}")
endif()
else()
message(WARNING "IPO enablement requires CMake 3.9+")
endif()
endif()
if(CMAKE_VERSION VERSION_LESS 3.0)
configure_file(src/game/version.h vd.h)
else()
@ -2914,6 +2930,9 @@ foreach(target ${TARGETS})
target_compile_definitions(${target} PRIVATE $<$<NOT:$<CONFIG:Debug>>:_FORTIFY_SOURCE=2>) # Detect some buffer overflows.
endif()
endif()
if(ENABLE_IPO)
set_property(TARGET ${target} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
endif()
endforeach()
foreach(target ${TARGETS_LINK})