Update CMakeLists.txt

Author: Jason2866

main/CMakeLists.txt

@@ -5,4 +5,6 @@ set(CMAKE_RANLIB ${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib)
 list(APPEND compile_options "-ffat-lto-objects -flto-compression-level=9 -flto=auto -malign-data=natural")
 list(APPEND CMAKE_EXE_LINKER_FLAGS "-flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=max")
 
+idf_build_set_property(COMPILE_OPTIONS "${compile_options}" APPEND)
+idf_build_set_property(CMAKE_EXE_LINKER_FLAGS "${cmake_exe_linker_flags}" APPEND)
 idf_component_register(SRCS "sketch.cpp" "arduino-lib-builder-gcc.c" "arduino-lib-builder-cpp.cpp" "arduino-lib-builder-as.S" INCLUDE_DIRS ".")