freebsd-dev/crypto/heimdal/cf/check-x.m4

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dnl
dnl See if there is any X11 present
dnl
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dnl $Id: check-x.m4 15435 2005-06-16 19:45:52Z lha $
2004-04-03 21:22:55 +00:00
AC_DEFUN([KRB_CHECK_X],[
AC_PATH_XTRA
# try to figure out if we need any additional ld flags, like -R
# and yes, the autoconf X test is utterly broken
if test "$no_x" != yes; then
AC_CACHE_CHECK(for special X linker flags,krb_cv_sys_x_libs_rpath,[
ac_save_libs="$LIBS"
ac_save_cflags="$CFLAGS"
CFLAGS="$CFLAGS $X_CFLAGS"
krb_cv_sys_x_libs_rpath=""
krb_cv_sys_x_libs=""
for rflag in "" "-R" "-R " "-rpath "; do
if test "$rflag" = ""; then
foo="$X_LIBS"
else
foo=""
for flag in $X_LIBS; do
case $flag in
-L*)
foo="$foo $flag `echo $flag | sed \"s/-L/$rflag/\"`"
;;
*)
foo="$foo $flag"
;;
esac
done
fi
LIBS="$ac_save_libs $foo $X_PRE_LIBS -lX11 $X_EXTRA_LIBS"
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AC_RUN_IFELSE([
#include <X11/Xlib.h>
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foo(void)
{
XOpenDisplay(NULL);
}
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main(int argc, char **argv)
{
return 0;
}
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],krb_cv_sys_x_libs_rpath="$rflag"; krb_cv_sys_x_libs="$foo"; break,:,
krb_cv_sys_x_libs_rpath="" ; krb_cv_sys_x_libs="" ; break)
done
LIBS="$ac_save_libs"
CFLAGS="$ac_save_cflags"
])
X_LIBS="$krb_cv_sys_x_libs"
fi
])