diff -urN subtitleripper/Makefile subtitleripper.src/Makefile
--- subtitleripper/Makefile	2004-02-07 20:27:05.000000000 +0100
+++ subtitleripper.src/Makefile	2008-06-01 12:51:21.000000000 +0200
@@ -9,11 +9,11 @@
 
 ### enable ppm support ###
 DEFINES  += -D_HAVE_LIB_PPM_
-LIBS     += -lppm -lpgm -lpbm -lpnm
+LIBS     += -lnetpbm
 
 ### enable PNG support ###
-DEFINES += -D_HAVE_PNG_
-LIBS    += -lpng
+#DEFINES += -D_HAVE_PNG_
+#LIBS    += -lpng
 
 ### enable zlib support ###
 DEFINES += -D_HAVE_ZLIB_