option(LOCAL_CBINDGEN "Download and build `cbindgen` even if one can be found on the system")

if(NOT LOCAL_CBINDGEN)
	find_program(CBINDGEN cbindgen)
endif()

if(NOT CBINDGEN)
	message(CONFIGURE_LOG "cbindgen not found, downloading...")
	set(crates "${CMAKE_BINARY_DIR}/crates")
	file(MAKE_DIRECTORY ${crates})
	execute_process(COMMAND ${CARGO} install --root ${crates} cbindgen@0.29.4)
	set(CBINDGEN "${crates}/bin/cbindgen")
endif()

set(CBINDGEN "${CBINDGEN}" CACHE FILEPATH "Path to the cbindgen executable." FORCE)