--- sourceforge.net/trunk/rdesktop/configure.ac	2004/08/06 09:50:34	742
+++ sourceforge.net/trunk/rdesktop/configure.ac	2004/08/08 11:17:12	743
@@ -157,6 +157,84 @@
 #
 # dirfd
 #
+dnl Find out how to get the file descriptor associated with an open DIR*.
+dnl From Jim Meyering
+
+AC_DEFUN([UTILS_FUNC_DIRFD],
+[
+
+  AC_HEADER_DIRENT
+  dirfd_headers='
+#if HAVE_DIRENT_H
+# include <dirent.h>
+#else /* not HAVE_DIRENT_H */
+# define dirent direct
+# if HAVE_SYS_NDIR_H
+#  include <sys/ndir.h>
+# endif /* HAVE_SYS_NDIR_H */
+# if HAVE_SYS_DIR_H
+#  include <sys/dir.h>
+# endif /* HAVE_SYS_DIR_H */
+# if HAVE_NDIR_H
+#  include <ndir.h>
+# endif /* HAVE_NDIR_H */
+#endif /* HAVE_DIRENT_H */
+'
+  AC_CHECK_FUNCS(dirfd)
+  AC_CHECK_DECLS([dirfd], , , $dirfd_headers)
+
+  AC_CACHE_CHECK([whether dirfd is a macro],
+    jm_cv_func_dirfd_macro,
+    [AC_EGREP_CPP([dirent_header_defines_dirfd], [$dirfd_headers
+#ifdef dirfd
+ dirent_header_defines_dirfd
+#endif],
+       jm_cv_func_dirfd_macro=yes,
+       jm_cv_func_dirfd_macro=no)])
+
+  # Use the replacement only if we have no function, macro,
+  # or declaration with that name.
+  if test $ac_cv_func_dirfd,$ac_cv_have_decl_dirfd,$jm_cv_func_dirfd_macro \
+      = no,no,no; then
+    AC_REPLACE_FUNCS([dirfd])
+    AC_CACHE_CHECK(
+	      [how to get the file descriptor associated with an open DIR*],
+		   gl_cv_sys_dir_fd_member_name,
+      [
+        dirfd_save_CFLAGS=$CFLAGS
+	for ac_expr in d_fd dd_fd; do
+
+	  CFLAGS="$CFLAGS -DDIR_FD_MEMBER_NAME=$ac_expr"
+	  AC_TRY_COMPILE(
+	    [$dirfd_headers
+	    ],
+	    [DIR *dir_p = opendir("."); (void) dir_p->DIR_FD_MEMBER_NAME;],
+	    dir_fd_found=yes
+	  )
+	  CFLAGS=$dirfd_save_CFLAGS
+	  test "$dir_fd_found" = yes && break
+	done
+	test "$dir_fd_found" = yes || ac_expr=no_such_member
+
+	gl_cv_sys_dir_fd_member_name=$ac_expr
+      ]
+    )
+    if test $gl_cv_sys_dir_fd_member_name != no_such_member; then
+      AC_DEFINE_UNQUOTED(DIR_FD_MEMBER_NAME,
+	$gl_cv_sys_dir_fd_member_name,
+	[the name of the file descriptor member of DIR])
+    fi
+    AH_VERBATIM(DIR_TO_FD,
+		[#ifdef DIR_FD_MEMBER_NAME
+# define DIR_TO_FD(Dir_p) ((Dir_p)->DIR_FD_MEMBER_NAME)
+#else
+# define DIR_TO_FD(Dir_p) -1
+#endif
+]
+    )
+  fi
+])
+
 UTILS_FUNC_DIRFD
 
 #