1 # sys_ioctl_h.m4 serial 4
2 dnl Copyright (C) 2008-2009 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 dnl Written by Bruno Haible.
9 AC_DEFUN([gl_SYS_IOCTL_H],
11 dnl Use AC_REQUIRE here, so that the default behavior below is expanded
12 dnl once only, before all statements that occur in other macros.
13 AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
15 AC_CHECK_HEADERS_ONCE([sys/ioctl.h])
16 if test $ac_cv_header_sys_ioctl_h = yes; then
18 dnl Test whether <sys/ioctl.h> declares ioctl(), or whether some other
19 dnl header file, such as <unistd.h> or <stropts.h>, is needed for that.
20 AC_CACHE_CHECK([whether <sys/ioctl.h> declares ioctl],
21 [gl_cv_decl_ioctl_in_sys_ioctl_h],
22 [dnl We cannot use AC_CHECK_DECL because it produces its own messages.
25 [AC_INCLUDES_DEFAULT([#include <sys/ioctl.h>])],
27 [gl_cv_decl_ioctl_in_sys_ioctl_h=yes],
28 [gl_cv_decl_ioctl_in_sys_ioctl_h=no])
33 AC_SUBST([HAVE_SYS_IOCTL_H])
34 dnl <sys/ioctl.h> is always overridden, because of GNULIB_POSIXCHECK.
35 gl_CHECK_NEXT_HEADERS([sys/ioctl.h])
38 dnl Unconditionally enables the replacement of <sys/ioctl.h>.
39 AC_DEFUN([gl_REPLACE_SYS_IOCTL_H],
41 dnl This is a no-op, because <sys/ioctl.h> is always overridden.
45 AC_DEFUN([gl_SYS_IOCTL_MODULE_INDICATOR],
47 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
48 AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
49 GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
52 AC_DEFUN([gl_SYS_IOCTL_H_DEFAULTS],
54 GNULIB_IOCTL=0; AC_SUBST([GNULIB_IOCTL])
55 dnl Assume proper GNU behavior unless another module says otherwise.
56 SYS_IOCTL_H_HAVE_WINSOCK2_H=0; AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H])
57 SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
58 AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])