comparison m4/stddef_h.m4 @ 434:b8bf63962a99 3.0

Added various generated files for release
author lost@l-w.ca
date Fri, 29 Oct 2010 19:20:39 -0600
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433:b142b473f0ee 434:b8bf63962a99
1 dnl A placeholder for POSIX 2008 <stddef.h>, for platforms that have issues.
2 # stddef_h.m4 serial 1
3 dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
7
8 AC_DEFUN([gl_STDDEF_H],
9 [
10 AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
11 AC_REQUIRE([gt_TYPE_WCHAR_T])
12 if test $gt_cv_c_wchar_t = no; then
13 HAVE_WCHAR_T=0
14 STDDEF_H=stddef.h
15 fi
16 AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
17 [gl_cv_decl_null_works],
18 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
19 int test[2 * (sizeof NULL == sizeof (void *)) -1];
20 ]])],
21 [gl_cv_decl_null_works=yes],
22 [gl_cv_decl_null_works=no])])
23 if test $gl_cv_decl_null_works = no; then
24 REPLACE_NULL=1
25 STDDEF_H=stddef.h
26 fi
27 if test -n "$STDDEF_H"; then
28 gl_CHECK_NEXT_HEADERS([stddef.h])
29 fi
30 ])
31
32 AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
33 [
34 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
35 AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
36 GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
37 ])
38
39 AC_DEFUN([gl_STDDEF_H_DEFAULTS],
40 [
41 dnl Assume proper GNU behavior unless another module says otherwise.
42 REPLACE_NULL=0; AC_SUBST([REPLACE_NULL])
43 HAVE_WCHAR_T=1; AC_SUBST([HAVE_WCHAR_T])
44 STDDEF_H=''; AC_SUBST([STDDEF_H])
45 ])