On Sun, 20 Jun 2010 20:48:04 +0200 Lars Ingemar Lundin <gnt877m at tninet.se> wrote: > 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. And libpng headers? -- Know how to save 5 drowning lawyers? -- No? GOOD!