squeezelite-esp32/components/_override/CMakeLists.txt

set(lib_dir ${build_dir}/esp-idf)

if(IDF_TARGET STREQUAL esp32)
    set(driver esp32/i2s.c esp32/i2s_hal.c esp32/spi_bus_lock.c)
else()
    return()
endif()    

string(REPLACE ".c" ".c.obj" driver_obj "${driver}")

idf_component_register( SRCS ${driver}
					REQUIRES driver           
					INCLUDE_DIRS ${IDF_PATH}/components/driver
					PRIV_INCLUDE_DIRS ${IDF_PATH}/components/driver/include/driver
)

# CMake is just a pile of crap
message(STATUS "!! overriding ${driver} !!")
message(STATUS "CAREFUL, LIBRARIES STRIPPING FROM DUPLICATED COMPONENTS DEPENDS ON THIS BEING REBUILD")

add_custom_command(
			TARGET ${COMPONENT_LIB}
			PRE_LINK
			COMMAND xtensa-esp32-elf-ar -d ${lib_dir}/driver/libdriver.a ${driver_obj}
			VERBATIM
)