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# serial 8
# Copyright (C) 1996, 1999, 2001, 2004, 2009-2020 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.
AC_DEFUN([gl_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL],
[AC_REQUIRE([gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H])
AC_CACHE_CHECK([whether use of TIOCGWINSZ requires sys/ioctl.h],
[gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h],
[gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h=no
if test $gl_cv_sys_tiocgwinsz_needs_termios_h = no; then
AC_EGREP_CPP([yes],
[#include <sys/types.h>
# include <sys/ioctl.h>
# ifdef TIOCGWINSZ
yes
# endif
], [gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h=yes])
fi
])
if test $gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h = yes; then
AC_DEFINE([GWINSZ_IN_SYS_IOCTL], [1],
[Define if your system defines TIOCGWINSZ in sys/ioctl.h.])
fi
])
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