diff -ru4NwbB libpng-1.2.32/example.c libpng-1.2.33rc01/example.c
--- libpng-1.2.32/example.c	2008-09-18 04:48:01.734430400 -0500
+++ libpng-1.2.33rc01/example.c	2008-10-15 11:07:47.987973956 -0500
@@ -1,9 +1,9 @@
 
 #if 0 /* in case someone actually tries to compile this */
 
 /* example.c - an example of using libpng
- * Last changed in libpng 1.2.32 [October 15, 2008]
+ * Last changed in libpng 1.2.33 [October 15, 2008]
  * This file has been placed in the public domain by the authors.
  * Maintained 1998-2008 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
  * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -203,9 +203,9 @@
       png_set_palette_to_rgb(png_ptr);
 
    /* Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
    if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
-      png_set_gray_1_2_4_to_8(png_ptr);
+      png_set_expand_gray_1_2_4_to_8(png_ptr);
 
    /* Expand paletted or RGB images with transparency to full alpha channels
     * so the data will be available as RGBA quartets.
     */
diff -ru4NwbB libpng-1.2.32/png.h libpng-1.2.33rc01/png.h
--- libpng-1.2.32/png.h	2008-09-18 04:48:01.711532270 -0500
+++ libpng-1.2.33rc01/png.h	2008-10-15 11:07:47.972126307 -0500
@@ -206,8 +206,9 @@
  *    1.0.40rc01              10    10040  10.so.0.40[.0]
  *    1.2.32rc01              13    10232  12.so.0.32[.0]
  *    1.0.40                  10    10040  10.so.0.40[.0]
  *    1.2.32                  13    10232  12.so.0.32[.0]
+ *    1.2.33beta01-02         13    10233  12.so.0.33[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
  *    used for changes in backward compatibility, as it is intended.  The
diff -ru4NwbB libpng-1.2.32/scripts/makefile.darwin libpng-1.2.33rc01/scripts/makefile.darwin
--- libpng-1.2.32/scripts/makefile.darwin	2008-09-18 04:48:05.484287099 -0500
+++ libpng-1.2.33rc01/scripts/makefile.darwin	2008-10-15 11:07:49.555951854 -0500
@@ -103,16 +103,16 @@
 
 $(LIBSOVER): $(OBJSDLL)
 	$(CC) -dynamiclib \
 	 -install_name $(LIBPATH)/$(LIBSOMAJ) \
-	 -current_version $(SONUM) -compatibility_version $(SONUM) \
+	 -current_version %SONUM% -compatibility_version %SONUM% \
 	 -o $(LIBSOVER) \
 	 $(OBJSDLL) -L$(ZLIBLIB) -lz
 
 $(OLDSOVER): $(OBJSDLL)
 	$(CC) -dynamiclib \
 	 -install_name $(LIBPATH)/$(OLDSOMAJ) \
-	 -current_version %OLDSONUM% -compatibility_version %OLDSONUM% \
+	 -current_version %OLDNUM% -compatibility_version %OLDNUM% \
 	 -o $(OLDSOVER) \
 	 $(OBJSDLL) -L$(ZLIBLIB) -lz
 
 pngtest: pngtest.o $(LIBSO)