--- src/celestia/imagecapture.cpp.zlib 2011-09-13 16:33:59.000000000 +0200 +++ src/celestia/imagecapture.cpp 2011-09-13 16:34:24.000000000 +0200 @@ -29,6 +29,7 @@ #include "../celestia/Celestia.app.skel/Contents/Frameworks/Headers/png.h" #else #include "png.h" +#include <zlib.h> #endif // Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng