--- fltk-1.1.3/configure.in.orig	2003-05-16 21:54:53.000000000 +0200
+++ fltk-1.1.3/configure.in	2003-05-16 21:56:13.000000000 +0200
@@ -379,11 +379,11 @@
 AC_CHECK_HEADER(libpng/png.h, AC_DEFINE(HAVE_LIBPNG_PNG_H))
 
 if test x$ac_cv_header_png_h = xyes -o x$ac_cv_header_libpng_png_h = xyes; then
-    AC_CHECK_LIB(png, png_read_rows,
+    AC_CHECK_LIB(png, png_read_rows,[
 	AC_DEFINE(HAVE_LIBPNG)
 	IMAGELIBS="-lpng $IMAGELIBS"
 	LIBS="-lpng $LIBS"
-	AC_CHECK_FUNCS(png_get_valid png_set_tRNS_to_alpha))
+	AC_CHECK_FUNCS(png_get_valid png_set_tRNS_to_alpha)])
 fi
 
 dnl Restore original LIBS settings...