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authorThomas Guyot-Sionnest <dermoth@aei.ca>2010-04-08 01:11:46 (GMT)
committerThomas Guyot-Sionnest <dermoth@aei.ca>2010-04-13 01:26:35 (GMT)
commit74da141e618ef99959d509cb2e7be35a348a39db (patch)
tree88ebc38b381a1021fc2d74864a71e230ae591c3d /gl/m4/stddef_h.m4
parentc63a4f726a0b6ad8cf6040f947754a81fd4683bb (diff)
downloadmonitoring-plugins-74da141e618ef99959d509cb2e7be35a348a39db.tar.gz
Sync with the latest Gnulib code (177f525)
Signed-off-by: Thomas Guyot-Sionnest <dermoth@aei.ca>
Diffstat (limited to 'gl/m4/stddef_h.m4')
-rw-r--r--gl/m4/stddef_h.m445
1 files changed, 45 insertions, 0 deletions
diff --git a/gl/m4/stddef_h.m4 b/gl/m4/stddef_h.m4
new file mode 100644
index 0000000..c3ae569
--- /dev/null
+++ b/gl/m4/stddef_h.m4
@@ -0,0 +1,45 @@
1dnl A placeholder for POSIX 2008 <stddef.h>, for platforms that have issues.
2# stddef_h.m4 serial 2
3dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
4dnl This file is free software; the Free Software Foundation
5dnl gives unlimited permission to copy and/or distribute it,
6dnl with or without modifications, as long as this notice is preserved.
7
8AC_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
32AC_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 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
37])
38
39AC_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])