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add lto for cmake

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This commit is contained in:
hathach
2023-06-01 12:36:08 +07:00
parent ddc029ce54
commit 19a597bcae
10 changed files with 200 additions and 183 deletions
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28
tools/cmake/toolchain/set_flags.cmake
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@@ -1,16 +1,16 @@
include(CMakePrintHelpers)
foreach(LANG IN ITEMS C CXX ASM)
# join the toolchain flags into a single string
list(APPEND TOOLCHAIN_${LANG}_FLAGS ${TOOLCHAIN_COMMON_FLAGS})
list(JOIN TOOLCHAIN_${LANG}_FLAGS " " TOOLCHAIN_${LANG}_FLAGS)
set(CMAKE_${LANG}_FLAGS_INIT "${TOOLCHAIN_${LANG}_FLAGS}")
foreach (LANG IN ITEMS C CXX ASM)
# join the toolchain flags into a single string
list(APPEND TOOLCHAIN_${LANG}_FLAGS ${TOOLCHAIN_COMMON_FLAGS})
list(JOIN TOOLCHAIN_${LANG}_FLAGS " " TOOLCHAIN_${LANG}_FLAGS)
set(CMAKE_${LANG}_FLAGS_INIT "${TOOLCHAIN_${LANG}_FLAGS}")
#cmake_print_variables(CMAKE_${LANG}_FLAGS_INIT)
#cmake_print_variables(CMAKE_${LANG}_FLAGS_INIT)
# optimization flags
set(CMAKE_${LANG}_FLAGS_RELEASE_INIT "-Os")
set(CMAKE_${LANG}_FLAGS_DEBUG_INIT "-O0")
endforeach()
# optimization flags for LOG, LOGGER ?
#set(CMAKE_${LANG}_FLAGS_RELEASE_INIT "-Os")
#set(CMAKE_${LANG}_FLAGS_DEBUG_INIT "-O0")
endforeach ()
# Linker
list(JOIN TOOLCHAIN_EXE_LINKER_FLAGS " " CMAKE_EXE_LINKER_FLAGS_INIT)
@@ -18,7 +18,7 @@ list(JOIN TOOLCHAIN_EXE_LINKER_FLAGS " " CMAKE_EXE_LINKER_FLAGS_INIT)
# try_compile is cmake test compiling its own example,
# pass -nostdlib to skip stdlib linking
get_property(IS_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE)
if(IS_IN_TRY_COMPILE)
set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -nostdlib")
set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -nostdlib")
endif()
if (IS_IN_TRY_COMPILE)
set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -nostdlib")
set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -nostdlib")
endif ()