--- lilypond-2.6.4/stepmake/stepmake/documentation-rules.make.bak	2001-09-17 12:08:15.000000000 +0200
+++ lilypond-2.6.4/stepmake/stepmake/documentation-rules.make	2005-11-02 06:13:00.000000000 +0100
@@ -4,10 +4,10 @@
 .SUFFIXES: .1 .data .html .gif .png .tex .txt .xpm
 
 $(outdir)/%.gif: %.xpm
-	xpmtoppm $< | ppmtogif > $@
+	convert $< $@
 
 $(outdir)/%.png: %.xpm
-	xpmtoppm $< | pnmtopng > $@
+	convert $< $@
 
 # use striproff?
 $(outdir)/%.txt: $(outdir)/%.1