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-rw-r--r--m4/jm-winsz2.m429
1 files changed, 29 insertions, 0 deletions
diff --git a/m4/jm-winsz2.m4 b/m4/jm-winsz2.m4
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+# serial 8
+
+# Copyright (C) 1996, 1999, 2001, 2004, 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.
+
+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
+])