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authorLorenz <12514511+RincewindsHat@users.noreply.github.com>2023-02-10 10:43:20 (GMT)
committerGitHub <noreply@github.com>2023-02-10 10:43:20 (GMT)
commitc07206f2ccc2356aa74bc6813a94c2190017d44e (patch)
tree1677e5fdca5c3ce544e92c5484e16a0b68df1cc9 /gl/m4/onceonly.m4
parente92046f810658016b7c373677efefda3b21400e4 (diff)
parentd2fcf49ad4afc15f37d082d7bc96a808369ec2d4 (diff)
downloadmonitoring-plugins-c07206f2ccc2356aa74bc6813a94c2190017d44e.tar.gz
Merge pull request #1832 from RincewindsHat/gnulib_update_2023
Gnulib update 2023 and attendant fixes
Diffstat (limited to 'gl/m4/onceonly.m4')
-rw-r--r--gl/m4/onceonly.m4104
1 files changed, 0 insertions, 104 deletions
diff --git a/gl/m4/onceonly.m4 b/gl/m4/onceonly.m4
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1# onceonly.m4 serial 9
2dnl Copyright (C) 2002-2003, 2005-2006, 2008-2013 Free Software Foundation,
3dnl Inc.
4dnl
5dnl This file is free software; you can redistribute it and/or modify
6dnl it under the terms of the GNU General Public License as published by
7dnl the Free Software Foundation; either version 3 of the License, or
8dnl (at your option) any later version.
9dnl
10dnl This file is distributed in the hope that it will be useful,
11dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
12dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13dnl GNU General Public License for more details.
14dnl
15dnl You should have received a copy of the GNU General Public License
16dnl along with this file. If not, see <http://www.gnu.org/licenses/>.
17dnl
18dnl As a special exception to the GNU General Public License,
19dnl this file may be distributed as part of a program
20dnl that contains a configuration script generated by Autoconf, under
21dnl the same distribution terms as the rest of that program.
22
23dnl This file defines some "once only" variants of standard autoconf macros.
24dnl AC_CHECK_HEADERS_ONCE like AC_CHECK_HEADERS
25dnl AC_CHECK_FUNCS_ONCE like AC_CHECK_FUNCS
26dnl AC_CHECK_DECLS_ONCE like AC_CHECK_DECLS
27dnl AC_REQUIRE([AC_FUNC_STRCOLL]) like AC_FUNC_STRCOLL
28dnl The advantage is that the check for each of the headers/functions/decls
29dnl will be put only once into the 'configure' file. It keeps the size of
30dnl the 'configure' file down, and avoids redundant output when 'configure'
31dnl is run.
32dnl The drawback is that the checks cannot be conditionalized. If you write
33dnl if some_condition; then gl_CHECK_HEADERS(stdlib.h); fi
34dnl inside an AC_DEFUNed function, the gl_CHECK_HEADERS macro call expands to
35dnl empty, and the check will be inserted before the body of the AC_DEFUNed
36dnl function.
37
38dnl The original code implemented AC_CHECK_HEADERS_ONCE and AC_CHECK_FUNCS_ONCE
39dnl in terms of AC_DEFUN and AC_REQUIRE. This implementation uses diversions to
40dnl named sections DEFAULTS and INIT_PREPARE in order to check all requested
41dnl headers at once, thus reducing the size of 'configure'. It is known to work
42dnl with autoconf 2.57..2.62 at least . The size reduction is ca. 9%.
43
44dnl Autoconf version 2.59 plus gnulib is required; this file is not needed
45dnl with Autoconf 2.60 or greater. But note that autoconf's implementation of
46dnl AC_CHECK_DECLS_ONCE expects a comma-separated list of symbols as first
47dnl argument!
48AC_PREREQ([2.59])
49
50# AC_CHECK_HEADERS_ONCE(HEADER1 HEADER2 ...) is a once-only variant of
51# AC_CHECK_HEADERS(HEADER1 HEADER2 ...).
52AC_DEFUN([AC_CHECK_HEADERS_ONCE], [
53 :
54 m4_foreach_w([gl_HEADER_NAME], [$1], [
55 AC_DEFUN([gl_CHECK_HEADER_]m4_quote(m4_translit(gl_HEADER_NAME,
56 [./-], [___])), [
57 m4_divert_text([INIT_PREPARE],
58 [gl_header_list="$gl_header_list gl_HEADER_NAME"])
59 gl_HEADERS_EXPANSION
60 AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([gl_HEADER_NAME])),
61 [Define to 1 if you have the <]m4_defn([gl_HEADER_NAME])[> header file.])
62 ])
63 AC_REQUIRE([gl_CHECK_HEADER_]m4_quote(m4_translit(gl_HEADER_NAME,
64 [./-], [___])))
65 ])
66])
67m4_define([gl_HEADERS_EXPANSION], [
68 m4_divert_text([DEFAULTS], [gl_header_list=])
69 AC_CHECK_HEADERS([$gl_header_list])
70 m4_define([gl_HEADERS_EXPANSION], [])
71])
72
73# AC_CHECK_FUNCS_ONCE(FUNC1 FUNC2 ...) is a once-only variant of
74# AC_CHECK_FUNCS(FUNC1 FUNC2 ...).
75AC_DEFUN([AC_CHECK_FUNCS_ONCE], [
76 :
77 m4_foreach_w([gl_FUNC_NAME], [$1], [
78 AC_DEFUN([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]), [
79 m4_divert_text([INIT_PREPARE],
80 [gl_func_list="$gl_func_list gl_FUNC_NAME"])
81 gl_FUNCS_EXPANSION
82 AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([gl_FUNC_NAME])),
83 [Define to 1 if you have the ']m4_defn([gl_FUNC_NAME])[' function.])
84 ])
85 AC_REQUIRE([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]))
86 ])
87])
88m4_define([gl_FUNCS_EXPANSION], [
89 m4_divert_text([DEFAULTS], [gl_func_list=])
90 AC_CHECK_FUNCS([$gl_func_list])
91 m4_define([gl_FUNCS_EXPANSION], [])
92])
93
94# AC_CHECK_DECLS_ONCE(DECL1 DECL2 ...) is a once-only variant of
95# AC_CHECK_DECLS(DECL1, DECL2, ...).
96AC_DEFUN([AC_CHECK_DECLS_ONCE], [
97 :
98 m4_foreach_w([gl_DECL_NAME], [$1], [
99 AC_DEFUN([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]), [
100 AC_CHECK_DECLS(m4_defn([gl_DECL_NAME]))
101 ])
102 AC_REQUIRE([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]))
103 ])
104])