-# sys_ioctl_h.m4 serial 4
-dnl Copyright (C) 2008-2009 Free Software Foundation, Inc.
+# sys_ioctl_h.m4 serial 5
+dnl Copyright (C) 2008-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
HAVE_SYS_IOCTL_H=0
fi
AC_SUBST([HAVE_SYS_IOCTL_H])
- dnl Execute this unconditionally, because SYS_IOCTL_H may be set by other
- dnl modules, after this code is executed.
+ dnl <sys/ioctl.h> is always overridden, because of GNULIB_POSIXCHECK.
gl_CHECK_NEXT_HEADERS([sys/ioctl.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[#include <sys/ioctl.h>
+/* Some platforms declare ioctl in the wrong header. */
+#ifndef __GLIBC__
+# include <unistd.h>
+#endif
+ ]], [ioctl])
])
dnl Unconditionally enables the replacement of <sys/ioctl.h>.
AC_DEFUN([gl_REPLACE_SYS_IOCTL_H],
[
- AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
+ dnl This is a no-op, because <sys/ioctl.h> is always overridden.
:
])