X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=stepmake%2Fstepmake%2Fdocumentation-rules.make;h=2cb0849430f4a3bad87d57b146532fec04e7a41d;hb=b66b5013d3800245b2f185e2d86aa55a743cd8b5;hp=e7ac7462470d4b4b630b3fc42fb56a56d1b60920;hpb=ac41a690f5859693589156b38ff462ac135deea2;p=lilypond.git

diff --git a/stepmake/stepmake/documentation-rules.make b/stepmake/stepmake/documentation-rules.make
index e7ac746247..2cb0849430 100644
--- a/stepmake/stepmake/documentation-rules.make
+++ b/stepmake/stepmake/documentation-rules.make
@@ -3,11 +3,14 @@
 # special rules for the documentation section.
 # There are too many to add to the general rules
 
-.SUFFIXES: .1 .data .html .gif .xpm .tex .txt
+.SUFFIXES: .1 .data .html .gif .png .tex .txt .xpm
 
 $(outdir)/%.gif: %.xpm
 	xpmtoppm $< | ppmtogif > $@
 
+$(outdir)/%.png: %.xpm
+	xpmtoppm $< | pnmtopng > $@
+
 # use striproff?
 $(outdir)/%.txt: $(outdir)/%.1
 	troff -man -Tascii $< | grotty -b -u -o > $@