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[Chore] (CMake): Use ThinLTO with priority if possible.

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BZLZHH
2026-02-02 22:57:29 +08:00
parent 7f1cb14d33
commit 3f0744a8ce
1 changed files with 20 additions and 1 deletions
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CMakeLists.txt
+19
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@@ -13,11 +13,30 @@ if (ANDROID)
endif() endif()
if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug" OR MOBILEGL_FORCE_RELEASE_OPT) if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug" OR MOBILEGL_FORCE_RELEASE_OPT)
# Check if ThinLTO or LTO is suppported
include(CheckIPOSupported) include(CheckIPOSupported)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
check_ipo_supported(RESULT LTOSupported OUTPUT LTOError) check_ipo_supported(RESULT LTOSupported OUTPUT LTOError)
if (LTOSupported) if (LTOSupported)
# Check ThinLTO
check_c_compiler_flag("-flto=thin" HAS_THINLTO_C)
check_cxx_compiler_flag("-flto=thin" HAS_THINLTO_CXX)
if (HAS_THINLTO_C AND HAS_THINLTO_CXX)
message(STATUS "ThinLTO supported, using -flto=thin")
add_compile_options(-flto=thin)
add_link_options(-flto=thin)
else()
# ThinLTO is not supported
message(STATUS "ThinLTO not available, fallback to CMAKE IPO")
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE) set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
endif() endif()
else()
message(STATUS "IPO not supported: ${LTOError}")
endif()
if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang" AND NOT MATCHES "AppleClang") if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang" AND NOT MATCHES "AppleClang")
add_compile_options(-O3 -ffunction-sections -fdata-sections) add_compile_options(-O3 -ffunction-sections -fdata-sections)