--- configure.ac.libpng 2011-09-18 10:20:36.000000000 +0200 +++ configure.ac 2011-09-18 10:20:53.000000000 +0200 @@ -731,7 +731,7 @@ CPPFLAGS="$CPPFLAGS `libpng-config --cflags`" LIBS="$LIBS $PNGLIBS" -AC_CHECK_FUNC(png_check_sig, +AC_CHECK_FUNC(png_sig_cmp, , AC_MSG_ERROR([You need libpng to compile Armagetron.]))