[MPlayer-users] Error when trying to enable GUI

[Lars Ingemar Lundin]

When running ./configure --enable-gui I get this message: Error: The GUI 
requires libavcodec with PNG support (needs zlib). I have zlib version 
1.2.3-140.2. My system is openSUSE11.2 x86_64 with MPlayer SVN-r31471-4.4

Thanks in advance/
Lasse.