giftoppm was in libgr, but giftopnm is in netpbm
--- mgetty-1.1.21/fax/faxspool.in.giftopnm	Mon Jul 24 02:48:23 2000
+++ mgetty-1.1.21/fax/faxspool.in	Mon Jul 24 02:48:40 2000
@@ -174,7 +174,7 @@
     REDUCE="cat"
     test X$3 = X-n && REDUCE="pnmscale -yscale 0.5"
 
-    giftoppm $1 |\
+    giftopnm $1 |\
 	pnmscale -xysize 1728 2000 |\
 	$REDUCE |\
 	ppmtopgm |\