patch -p0 < ~codyzapp/libpng.patch
can't find file to patch at input line 3
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|--- src/mngutil.c.backup       2006-07-17 09:33:45.000000000 +0800
|+++ src/mngutil.c      2006-07-17 09:39:15.000000000 +0800
--------------------------
File to patch: