diff -ru4NwbB libpng-1.2.45/Makefile.am libpng-1.2.46rc02/Makefile.am
--- libpng-1.2.45/Makefile.am	2011-07-07 06:53:51.347766499 -0500
+++ libpng-1.2.46rc02/Makefile.am	2011-07-08 18:30:17.964058812 -0500
@@ -73,21 +73,24 @@
 #extra source distribution files.
 EXTRA_DIST= \
 	ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO \
 	pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
+        CMakeLists.txt \
 	${srcdir}/projects/cbuilder5/* \
 	${srcdir}/projects/beos/* \
 	${srcdir}/projects/visualc6/* \
 	${srcdir}/projects/visualc71/* \
 	${srcdir}/projects/wince.txt \
 	${srcdir}/projects/netware.txt \
+	${srcdir}/projects/xcode/* \
 	${srcdir}/scripts/* \
 	${srcdir}/contrib/gregbook/* \
+	${srcdir}/contrib/pngminim/* \
 	${srcdir}/contrib/pngminus/* \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.2.46rc02.txt pngvcrd.c
+	example.c libpng-1.2.46rc02.txt pnggccrd.c pngvcrd.c
 
 CLEANFILES= pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym
 
@@ -101,10 +104,9 @@
 	cp libpng-config $@
 
 libpng.sym: png.h pngconf.h
 	rm -f $@ $@.new
-	$(CPP) @LIBPNG_DEFINES@ $(CPPFLAGS) -DPNG_BUILDSYMS $(srcdir)/png.h $(srcdir)/$@
-	cat $(srcdir)/$@ | \
+	$(CPP) @LIBPNG_DEFINES@ $(CPPFLAGS) -DPNG_BUILDSYMS $(srcdir)/png.h | \
 		$(SED) -n -e \
 		's|^.*PNG_FUNCTION_EXPORT[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
 		-e 's|^.*PNG_DATA_EXPORT[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
 			>$@.new
diff -ru4NwbB libpng-1.2.45/png.h libpng-1.2.46rc02/png.h
--- libpng-1.2.45/png.h	2011-07-07 06:53:37.095765499 -0500
+++ libpng-1.2.46rc02/png.h	2011-07-08 18:30:04.611465840 -0500
@@ -266,8 +266,9 @@
  *    1.0.55rc01              13    10055  10.so.0.55[.0]
  *    1.2.45rc01              13    10245  12.so.0.45[.0]
  *    1.0.55                  13    10055  10.so.0.55[.0]
  *    1.2.45                  13    10245  12.so.0.45[.0]
+ *    1.2.46rc01-02           13    10246  12.so.0.46[.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-1.2.45/projects/xcode/libpng.xcodeproj/project.pbxproj libpng-1.2.46rc02/projects/xcode/libpng.xcodeproj/project.pbxproj
--- libpng-1.2.45/projects/xcode/libpng.xcodeproj/project.pbxproj	2011-07-07 06:53:38.613174824 -0500
+++ libpng-1.2.46rc02/projects/xcode/libpng.xcodeproj/project.pbxproj	2011-07-08 18:30:05.806748450 -0500
@@ -221,9 +221,9 @@
 			buildSettings = {
 				COPY_PHASE_STRIP = NO;
 				DYLIB_COMPATIBILITY_VERSION = 3;
 				DYLIB_CURRENT_VERSION = 3;
-				FRAMEWORK_VERSION = 1.2.45;
+				FRAMEWORK_VERSION = 1.2.46rc02;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "@executable_path/../Frameworks";
@@ -239,9 +239,9 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				DYLIB_COMPATIBILITY_VERSION = 3;
 				DYLIB_CURRENT_VERSION = 3;
-				FRAMEWORK_VERSION = 1.2.45;
+				FRAMEWORK_VERSION = 1.2.46rc02;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "@executable_path/../Frameworks";