it's CFLAGS, not DEFS

diff --git a/m4/dirfd.m4 b/m4/dirfd.m4
index dae8945513da447fed851859a262e2c2a02638ca..f18bf80f8c18ba44bb073a33c2d0ec3617d339ab 100644 (file)
--- a/m4/dirfd.m4
+++ b/m4/dirfd.m4
@@ -33,17 +33,17 @@ AC_DEFUN([UTILS_FUNC_DIRFD],
              [how to get the file descriptor associated with an open DIR*],
                   ac_cv_sys_dir_fd_member_name,
       [
-        dirfd_save_DEFS=$DEFS
+        dirfd_save_CFLAGS=$CFLAGS
        for ac_expr in d_fd dd_fd; do
 
-         DEFS="$DEFS -DDIR_FD_MEMBER_NAME=$ac_expr"
+         CFLAGS="$CFLAGS -DDIR_FD_MEMBER_NAME=$ac_expr"
          AC_TRY_COMPILE(
            [$dirfd_headers
            ],
            [DIR *dir_p = opendir("."); (void) dir_p->DIR_FD_MEMBER_NAME;],
            dir_fd_found=yes
          )
-         DEFS=$dirfd_save_DEFS
+         CFLAGS=$dirfd_save_CFLAGS
          test "$dir_fd_found" = yes && break
        done
        test "$dir_fd_found" = yes || ac_expr=-1