set(idf_ver "${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}")

if (NOT CMAKE_BUILD_EARLY_EXPANSION)
    idf_build_get_property(build_dir BUILD_DIR)
    add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/../../../../source ${build_dir}/m3)
endif()

set(APP_SOURCES "main.cpp")

idf_component_register(SRCS ${APP_SOURCES}
                       INCLUDE_DIRS ""
                       LDFRAGMENTS linker.lf)

if (idf_ver STREQUAL "4.0")
    # IDF v4.0 links apps with -nostdlib, so need to explicitly list the dependencies.

    add_library(m3_deps INTERFACE)
    target_link_libraries(m3_deps INTERFACE c m gcc)
    target_link_libraries(${COMPONENT_TARGET} PRIVATE m3 m3_deps)
else()
    # For IDF v4.1 and later, no tricks required.

    target_link_libraries(${COMPONENT_TARGET} PRIVATE m3)
endif()

target_compile_options(m3 PUBLIC -DM3_IN_IRAM -DESP32 -O3 -freorder-blocks)