--- configure.in 2007-10-30 08:38:30.000000000 +0100 +++ configure.in.oden 2008-11-11 15:42:40.000000000 +0100 @@ -112,7 +112,7 @@ AC_CHECK_LIB(png, png_read_image, [ HAVE_PNGLIB=1; - PNG_LIBS=-lpng; + PNG_LIBS="-lpng -lm"; AC_DEFINE(HAVE_LIBPNG, 1, "Support for png images") ], [AC_MSG_RESULT([libpng not found. I will compile without png support.]); HAVE_PNGLIB=0],