--- gnome-libs-1.4.1.2.90/configure.in.ac25	Sun Jan 27 19:03:58 2002
+++ gnome-libs-1.4.1.2.90/configure.in	Sun Jan 27 19:52:01 2002
@@ -229,8 +229,8 @@
 
 dnl Test for libz
 AC_CHECK_LIB(z, inflate,
-  AC_CHECK_HEADER(zlib.h,
-    Z_LIBS="-lz";  AC_DEFINE(HAVE_LIBZ)))
+  [AC_CHECK_HEADER(zlib.h,
+    Z_LIBS="-lz";  AC_DEFINE(HAVE_LIBZ))])
 AC_CHECK_LIB(z, compress, , 
    AC_MSG_ERROR([[
 *** Incorrect libz version found.  Please make sure you do not have
@@ -262,31 +262,31 @@
 
 dnl Test for libtiff
 AC_CHECK_LIB(tiff, TIFFReadScanline,
-  AC_CHECK_HEADER(tiffio.h,
-    TIFF_LIBS="-ltiff"; AC_DEFINE(HAVE_LIBTIFF)),
-  AC_CHECK_LIB(tiff, TIFFWriteScanline,
-    AC_CHECK_HEADER(tiffio.h,
-      TIFF_LIBS="-ltiff $JPEG_LIBS $Z_LIBS"; AC_DEFINE(HAVE_LIBTIFF)),
-    AC_CHECK_LIB(tiff34, TIFFFlushData,
-      AC_CHECK_HEADER(tiffio.h,
-        TIFF_LIBS="-ltiff34 $JPEG_LIBS $Z_LIBS"; AC_DEFINE(HAVE_LIBTIFF)),,
-$JPEG_LIBS $Z_LIBS -lm), $JPEG_LIBS $Z_LIBS -lm), -lm)
+  [AC_CHECK_HEADER(tiffio.h,
+    TIFF_LIBS="-ltiff"; AC_DEFINE(HAVE_LIBTIFF))],
+ [ AC_CHECK_LIB(tiff, TIFFWriteScanline,
+   [ AC_CHECK_HEADER(tiffio.h,
+      TIFF_LIBS="-ltiff $JPEG_LIBS $Z_LIBS"; AC_DEFINE(HAVE_LIBTIFF))],
+   [ AC_CHECK_LIB(tiff34, TIFFFlushData,
+      [  AC_CHECK_HEADER(tiffio.h,
+        TIFF_LIBS="-ltiff34 $JPEG_LIBS $Z_LIBS"; AC_DEFINE(HAVE_LIBTIFF)) ],,
+$JPEG_LIBS $Z_LIBS -lm) ], $JPEG_LIBS $Z_LIBS -lm) ], -lm)
 
 dnl Test for libgif
 AC_CHECK_LIB(gif, DGifOpenFileName,
-  AC_CHECK_HEADER(gif_lib.h,
-    GIF_LIBS="-lgif"; AC_DEFINE(HAVE_LIBGIF)),,$GTK_LIBS)
+  [ AC_CHECK_HEADER(gif_lib.h,
+    GIF_LIBS="-lgif"; AC_DEFINE(HAVE_LIBGIF)) ],,$GTK_LIBS)
 
 dnl Test for libungif
 AC_CHECK_LIB(ungif, DGifOpenFileName,
-  AC_CHECK_HEADER(gif_lib.h,
-    GIF_LIBS="-lungif"; AC_DEFINE(HAVE_LIBGIF)),,$GTK_LIBS)
+  [ AC_CHECK_HEADER(gif_lib.h,
+    GIF_LIBS="-lungif"; AC_DEFINE(HAVE_LIBGIF)) ],,$GTK_LIBS)
 
 dnl Test for libpng
 AC_CHECK_LIB(png, png_read_info,
-  AC_CHECK_HEADER(png.h,
+  [ AC_CHECK_HEADER(png.h,
     png_ok=yes,
-    png_ok=no),,$Z_LIBS -lm)
+    png_ok=no)],,$Z_LIBS -lm)
 if test "$png_ok" = yes; then
   AC_MSG_CHECKING([for png_structp in png.h])
   AC_TRY_COMPILE([#include <png.h>],