if ENABLE_LIGHT gtk3theme_DATA = light/thumbnail.png endif if ENABLE_DARKER gtk3themedarker_DATA = light/thumbnail.png endif if ENABLE_DARK gtk3themedark_DATA = dark/thumbnail.png endif EXTRA_DIST = \ light \ dark \ _colors.scss.thpl SUBDIRS = $(GTK3_VERSION) DIST_SUBDIRS = 3.18 3.20