icons = ['16', '32', '64', '128'] foreach size: icons name = 'mpv-icon-8bit-'+size+'x'+size+'.png' icon = custom_target(name, input: name, output: name + '.inc', command: [file2string, '@INPUT@', '@OUTPUT@', '@SOURCE_ROOT@'], ) sources += icon endforeach etc_files = ['input.conf', 'builtin.conf'] foreach file: etc_files etc_file = custom_target(file, input: file, output: file + '.inc', command: [file2string, '@INPUT@', '@OUTPUT@', '@SOURCE_ROOT@'], ) sources += etc_file endforeach