1  dnl 
 2  dnl See if there is any X11 present
 3  dnl
 4  dnl $Id$
 5  
 6  AC_DEFUN([KRB_CHECK_X],[
 7  AC_PATH_XTRA
 8  
 9  # try to figure out if we need any additional ld flags, like -R
10  # and yes, the autoconf X test is utterly broken
11  if test "$no_x" != yes; then
12  	AC_CACHE_CHECK(for special X linker flags,krb_cv_sys_x_libs_rpath,[
13  	ac_save_libs="$LIBS"
14  	ac_save_cflags="$CFLAGS"
15  	CFLAGS="$CFLAGS $X_CFLAGS"
16  	krb_cv_sys_x_libs_rpath=""
17  	krb_cv_sys_x_libs=""
18  	for rflag in "" "-R" "-R " "-rpath "; do
19  		if test "$rflag" = ""; then
20  			foo="$X_LIBS"
21  		else
22  			foo=""
23  			for flag in $X_LIBS; do
24  			case $flag in
25  			-L*)
26  				foo="$foo $flag `echo $flag | sed \"s/-L/$rflag/\"`"
27  				;;
28  			*)
29  				foo="$foo $flag"
30  				;;
31  			esac
32  			done
33  		fi
34  		LIBS="$ac_save_libs $foo $X_PRE_LIBS -lX11 $X_EXTRA_LIBS"
35  		AC_RUN_IFELSE([
36  		#include <X11/Xlib.h>
37  		foo(void)
38  		{
39  		XOpenDisplay(NULL);
40  		}
41  		main(int argc, char **argv)
42  		{
43  		return 0;
44  		}
45  		],krb_cv_sys_x_libs_rpath="$rflag"; krb_cv_sys_x_libs="$foo"; break,:,
46  		krb_cv_sys_x_libs_rpath="" ; krb_cv_sys_x_libs="" ; break)
47  	done
48  	LIBS="$ac_save_libs"
49  	CFLAGS="$ac_save_cflags"
50  	])
51  	X_LIBS="$krb_cv_sys_x_libs"
52  fi
53  ])