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# serial 12
# Copyright (C) 1996, 1999, 2001-2002, 2004, 2006, 2009-2022 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])
AC_CACHE_CHECK([whether use of TIOCGWINSZ requires termios.h],
[gl_cv_sys_tiocgwinsz_needs_termios_h],
[gl_cv_sys_tiocgwinsz_needs_termios_h=no
if test $ac_cv_sys_posix_termios = yes; then
AC_EGREP_CPP([yes],
[#include <sys/types.h>
# include <termios.h>
# ifdef TIOCGWINSZ
yes
# endif
], [gl_cv_sys_tiocgwinsz_needs_termios_h=yes])
fi
])
])
AC_DEFUN([gl_WINSIZE_IN_PTEM],
[
AC_REQUIRE([AC_SYS_POSIX_TERMIOS])
AC_CACHE_CHECK([whether use of struct winsize requires sys/ptem.h],
[gl_cv_sys_struct_winsize_needs_sys_ptem_h],
[gl_cv_sys_struct_winsize_needs_sys_ptem_h=yes
if test $ac_cv_sys_posix_termios = yes; then
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <termios.h>]],
[[struct winsize x;
if (sizeof x > 0) return 0;]])],
[gl_cv_sys_struct_winsize_needs_sys_ptem_h=no])
fi
if test $gl_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/ptem.h>]],
[[struct winsize x;
if (sizeof x > 0) return 0;]])],
[], [gl_cv_sys_struct_winsize_needs_sys_ptem_h=no])
fi])
if test $gl_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
AC_DEFINE([WINSIZE_IN_PTEM], [1],
[Define if sys/ptem.h is required for struct winsize.])
fi
])
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