New module 'signal'.

[gnulib.git] / m4 / jm-winsz1.m4

diff --git a/m4/jm-winsz1.m4 b/m4/jm-winsz1.m4
index 5bfbdab..52653b7 100644 (file)
--- a/m4/jm-winsz1.m4
+++ b/m4/jm-winsz1.m4
@@ -1,4 +1,10 @@
-#serial 7
+#serial 9
+
+# Copyright (C) 1996, 1999, 2001, 2002, 2004, 2006 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
 dnl From Jim Meyering and Paul Eggert.
 AC_DEFUN([gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H],
 [AC_REQUIRE([AC_SYS_POSIX_TERMIOS])
@@ -24,13 +30,15 @@ AC_DEFUN([gl_WINSIZE_IN_PTEM],
      jm_cv_sys_struct_winsize_needs_sys_ptem_h,
      [jm_cv_sys_struct_winsize_needs_sys_ptem_h=yes
       if test $ac_cv_sys_posix_termios = yes; then
-       AC_TRY_COMPILE([#include <termios.h>]
-         [struct winsize x;],
+       AC_TRY_COMPILE([#include <termios.h>],
+         [struct winsize x;
+          if (sizeof x > 0) return 0;],
           [jm_cv_sys_struct_winsize_needs_sys_ptem_h=no])
       fi
       if test $jm_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
        AC_TRY_COMPILE([#include <sys/ptem.h>],
-         [struct winsize x;],
+         [struct winsize x;
+          if (sizeof x > 0) return 0;],
          [], [jm_cv_sys_struct_winsize_needs_sys_ptem_h=no])
       fi])
    if test $jm_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then