m4/jm-winsz1.m4

   1 #serial 8
   2
   3 # Copyright (C) 1996, 1999, 2001, 2002, 2004 Free Software Foundation, Inc.
   4 # This file is free software; the Free Software Foundation
   5 # gives unlimited permission to copy and/or distribute it,
   6 # with or without modifications, as long as this notice is preserved.
   7
   8 dnl From Jim Meyering and Paul Eggert.
   9 AC_DEFUN([gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H],
  10 [AC_REQUIRE([AC_SYS_POSIX_TERMIOS])
  11  AC_CACHE_CHECK([whether use of TIOCGWINSZ requires termios.h],
  12                 jm_cv_sys_tiocgwinsz_needs_termios_h,
  13   [jm_cv_sys_tiocgwinsz_needs_termios_h=no
  14
  15    if test $ac_cv_sys_posix_termios = yes; then
  16      AC_EGREP_CPP([yes],
  17      [#include <sys/types.h>
  18 #      include <termios.h>
  19 #      ifdef TIOCGWINSZ
  20          yes
  21 #      endif
  22      ], jm_cv_sys_tiocgwinsz_needs_termios_h=yes)
  23    fi
  24   ])
  25 ])
  26
  27 AC_DEFUN([gl_WINSIZE_IN_PTEM],
  28   [AC_REQUIRE([AC_SYS_POSIX_TERMIOS])
  29    AC_CACHE_CHECK([whether use of struct winsize requires sys/ptem.h],
  30      jm_cv_sys_struct_winsize_needs_sys_ptem_h,
  31      [jm_cv_sys_struct_winsize_needs_sys_ptem_h=yes
  32       if test $ac_cv_sys_posix_termios = yes; then
  33         AC_TRY_COMPILE([#include <termios.h>]
  34           [struct winsize x;],
  35           [jm_cv_sys_struct_winsize_needs_sys_ptem_h=no])
  36       fi
  37       if test $jm_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
  38         AC_TRY_COMPILE([#include <sys/ptem.h>],
  39           [struct winsize x;],
  40           [], [jm_cv_sys_struct_winsize_needs_sys_ptem_h=no])
  41       fi])
  42    if test $jm_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
  43      AC_DEFINE([WINSIZE_IN_PTEM], 1,
  44        [Define if sys/ptem.h is required for struct winsize.])
  45    fi])