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Diffstat (limited to 'gl/m4/onceonly.m4')
-rw-r--r-- | gl/m4/onceonly.m4 | 104 |
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diff --git a/gl/m4/onceonly.m4 b/gl/m4/onceonly.m4 deleted file mode 100644 index 0a875a3d..00000000 --- a/gl/m4/onceonly.m4 +++ /dev/null | |||
@@ -1,104 +0,0 @@ | |||
1 | # onceonly.m4 serial 9 | ||
2 | dnl Copyright (C) 2002-2003, 2005-2006, 2008-2013 Free Software Foundation, | ||
3 | dnl Inc. | ||
4 | dnl | ||
5 | dnl This file is free software; you can redistribute it and/or modify | ||
6 | dnl it under the terms of the GNU General Public License as published by | ||
7 | dnl the Free Software Foundation; either version 3 of the License, or | ||
8 | dnl (at your option) any later version. | ||
9 | dnl | ||
10 | dnl This file is distributed in the hope that it will be useful, | ||
11 | dnl but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | dnl GNU General Public License for more details. | ||
14 | dnl | ||
15 | dnl You should have received a copy of the GNU General Public License | ||
16 | dnl along with this file. If not, see <http://www.gnu.org/licenses/>. | ||
17 | dnl | ||
18 | dnl As a special exception to the GNU General Public License, | ||
19 | dnl this file may be distributed as part of a program | ||
20 | dnl that contains a configuration script generated by Autoconf, under | ||
21 | dnl the same distribution terms as the rest of that program. | ||
22 | |||
23 | dnl This file defines some "once only" variants of standard autoconf macros. | ||
24 | dnl AC_CHECK_HEADERS_ONCE like AC_CHECK_HEADERS | ||
25 | dnl AC_CHECK_FUNCS_ONCE like AC_CHECK_FUNCS | ||
26 | dnl AC_CHECK_DECLS_ONCE like AC_CHECK_DECLS | ||
27 | dnl AC_REQUIRE([AC_FUNC_STRCOLL]) like AC_FUNC_STRCOLL | ||
28 | dnl The advantage is that the check for each of the headers/functions/decls | ||
29 | dnl will be put only once into the 'configure' file. It keeps the size of | ||
30 | dnl the 'configure' file down, and avoids redundant output when 'configure' | ||
31 | dnl is run. | ||
32 | dnl The drawback is that the checks cannot be conditionalized. If you write | ||
33 | dnl if some_condition; then gl_CHECK_HEADERS(stdlib.h); fi | ||
34 | dnl inside an AC_DEFUNed function, the gl_CHECK_HEADERS macro call expands to | ||
35 | dnl empty, and the check will be inserted before the body of the AC_DEFUNed | ||
36 | dnl function. | ||
37 | |||
38 | dnl The original code implemented AC_CHECK_HEADERS_ONCE and AC_CHECK_FUNCS_ONCE | ||
39 | dnl in terms of AC_DEFUN and AC_REQUIRE. This implementation uses diversions to | ||
40 | dnl named sections DEFAULTS and INIT_PREPARE in order to check all requested | ||
41 | dnl headers at once, thus reducing the size of 'configure'. It is known to work | ||
42 | dnl with autoconf 2.57..2.62 at least . The size reduction is ca. 9%. | ||
43 | |||
44 | dnl Autoconf version 2.59 plus gnulib is required; this file is not needed | ||
45 | dnl with Autoconf 2.60 or greater. But note that autoconf's implementation of | ||
46 | dnl AC_CHECK_DECLS_ONCE expects a comma-separated list of symbols as first | ||
47 | dnl argument! | ||
48 | AC_PREREQ([2.59]) | ||
49 | |||
50 | # AC_CHECK_HEADERS_ONCE(HEADER1 HEADER2 ...) is a once-only variant of | ||
51 | # AC_CHECK_HEADERS(HEADER1 HEADER2 ...). | ||
52 | AC_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 | ]) | ||
67 | m4_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 ...). | ||
75 | AC_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 | ]) | ||
88 | m4_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, ...). | ||
96 | AC_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 | ]) | ||