-STEPMAKE_TEMPLATES=documentation
-XPM_FILES=$(call src-wildcard,*.xpm)
-EXTRA_DIST_FILES= $(XPM_FILES)
+BITMAP_IMAGES = $(call src-wildcard,*.png) $(call src-wildcard,*.jpg)
+EPS_ILLUSTRATIONS = $(call src-wildcard,*.eps)
+SVG_FILES = $(call src-wildcard,*.svg)
+PDF_DIR = $(call src-wildcard,pdf/*.pdf)