michaelh/zephyr
1
0
Fork 0
Code Releases Activity

buildsystem: Add an option to enable LTO

Browse source 
This commit adds option to enable Link Time Optimization.

Signed-off-by: Radosław Koppel <radoslaw.koppel@nordicsemi.no>
This commit is contained in:
Radoslaw Koppel 2024-01-30 12:32:32 +01:00 • committed by Carles Cufí
commit 26c8776c70
5 changed files with 28 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

9
CMakeLists.txt
View file

@ -213,6 +213,11 @@ endif()
# Apply the final optimization flag(s)
zephyr_compile_options(${OPTIMIZATION_FLAG})
if(CONFIG_LTO)
add_compile_options($<TARGET_PROPERTY:compiler,optimization_lto>)
add_link_options($<TARGET_PROPERTY:linker,lto_arguments>)
endif()
# @Intent: Obtain compiler specific flags related to C++ that are not influenced by kconfig
zephyr_compile_options($<$<COMPILE_LANGUAGE:CXX>:$<TARGET_PROPERTY:compiler-cpp,required>>)
@ -805,6 +810,10 @@ target_include_directories(${OFFSETS_LIB} PRIVATE
kernel/include
${ARCH_DIR}/${ARCH}/include
)
# Make sure that LTO will never be enabled when compiling offsets.c
set_source_files_properties(${OFFSETS_C_PATH} PROPERTIES COMPILE_OPTIONS $<TARGET_PROPERTY:compiler,prohibit_lto>)
target_link_libraries(${OFFSETS_LIB} zephyr_interface)
add_dependencies(zephyr_interface
${SYSCALL_LIST_H_TARGET}