--- autoconf-2.59/lib/autoconf/libs.m4.orig	2003-05-22 14:05:13.000000000 +0200
+++ autoconf-2.59/lib/autoconf/libs.m4	2006-02-18 16:45:40.815890250 +0100
@@ -180,7 +180,8 @@
 # Internal subroutine of _AC_PATH_X.
 # Set ac_x_includes and/or ac_x_libraries.
 m4_define([_AC_PATH_X_XMKMF],
-[rm -fr conftest.dir
+[AC_ARG_VAR(XMKMF, [Path to xmkmf, Makefile generator for X Window System])dnl
+rm -f -r conftest.dir
 if mkdir conftest.dir; then
   cd conftest.dir
   # Make sure to not put "make" in the Imakefile rules, since we grep it out.
@@ -188,7 +189,7 @@
 acfindx:
 	@echo 'ac_im_incroot="${INCROOT}"; ac_im_usrlibdir="${USRLIBDIR}"; ac_im_libdir="${LIBDIR}"'
 _ACEOF
-  if (xmkmf) >/dev/null 2>/dev/null && test -f Makefile; then
+  if (export CC; ${XMKMF-xmkmf}) >/dev/null 2>/dev/null && test -f Makefile; then
     # GNU make sometimes prints "make[1]: Entering...", which would confuse us.
     eval `${MAKE-make} acfindx 2>/dev/null | grep -v make`
     # Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR.
@@ -202,7 +203,7 @@
     # bogus both because they are the default anyway, and because
     # using them would break gcc on systems where it needs fixed includes.
     case $ac_im_incroot in
-	/usr/include) ;;
+	/usr/include) ac_x_includes= ;;
 	*) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes=$ac_im_incroot;;
     esac
     case $ac_im_usrlibdir in
@@ -259,13 +260,13 @@
 /usr/openwin/share/include'
 
 if test "$ac_x_includes" = no; then
-  # Guess where to find include files, by looking for Intrinsic.h.
+  # Guess where to find include files, by looking for Xlib.h.
   # First, try using that file with no special directory specified.
-  AC_PREPROC_IFELSE([AC_LANG_SOURCE([@%:@include <X11/Intrinsic.h>])],
+  AC_PREPROC_IFELSE([AC_LANG_SOURCE([@%:@include <X11/Xlib.h>])],
 [# We can compile using X headers with no special include directory.
 ac_x_includes=],
 [for ac_dir in $ac_x_header_dirs; do
-  if test -r "$ac_dir/X11/Intrinsic.h"; then
+  if test -r "$ac_dir/X11/Xlib.h"; then
     ac_x_includes=$ac_dir
     break
   fi
@@ -277,9 +278,9 @@
   # See if we find them without any special options.
   # Don't add to $LIBS permanently.
   ac_save_LIBS=$LIBS
-  LIBS="-lXt $LIBS"
-  AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@include <X11/Intrinsic.h>],
-				  [XtMalloc (0)])],
+  LIBS="-lX11 $LIBS"
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@include <X11/Xlib.h>],
+				  [XrmInitialize ()])],
 		 [LIBS=$ac_save_LIBS
 # We can link X programs with no special library path.
 ac_x_libraries=],
@@ -288,7 +289,7 @@
 do
   # Don't even attempt the hair of trying to link an X program!
   for ac_extension in a so sl; do
-    if test -r $ac_dir/libXt.$ac_extension; then
+    if test -r $ac_dir/libX11.$ac_extension; then
       ac_x_libraries=$ac_dir
       break 2
     fi