--- libpng-1.0.48/ltmain.sh	2009-07-11 14:39:02.000000000 +0100
+++ libpng-1.0.48/ltmain.sh	2009-08-13 13:59:25.000000000 +0100
@@ -6225,7 +6225,7 @@
 	esac
 
 	case $revision in
-	0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+	0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]|[0-9].[0-9][0-9]) ;;
 	*)
 	  func_error "REVISION \`$revision' must be a nonnegative integer"
 	  func_fatal_error "\`$vinfo' is not valid version information"
--- libpng-1.0.48/Makefile.am	2009-08-13 12:12:18.000000000 +0100
+++ libpng-1.0.48/Makefile.am	2009-08-13 13:59:25.000000000 +0100
@@ -45,7 +45,7 @@
 	-version-number 0:@PNGLIB_RELEASE@:0
 # -rpath is needed as automake doesn't know the directory
 libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
-	-version-number 2:@PNGLIB_RELEASE@:0
+	-version-number 2:1:0.@PNGLIB_RELEASE@
 
 if HAVE_LD_VERSION_SCRIPT
   # Versioned symbols and restricted exports
--- libpng-1.0.51/Makefile.in	2009-12-03 01:44:54.000000000 +0000
+++ libpng-1.0.51/Makefile.in	2009-12-03 13:02:16.207268595 +0000
@@ -324,7 +324,7 @@
 	0:@PNGLIB_RELEASE@:0 $(am__append_1) $(am__append_2)
 # -rpath is needed as automake doesn't know the directory
 libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
-	-version-number 2:@PNGLIB_RELEASE@:0
+	-version-number 2:1:0.@PNGLIB_RELEASE@
 
 @HAVE_LD_VERSION_SCRIPT_FALSE@libpng10_la_DEPENDENCIES = libpng.sym
 @HAVE_LD_VERSION_SCRIPT_TRUE@libpng10_la_DEPENDENCIES = libpng.vers