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1 | dnl -*-autoconf-*- |
2 | ||
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3 | ### SYNOPSIS |
4 | ### | |
1dff83f1 | 5 | ### mdw_AUTO_VERSION |
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6 | ### |
7 | ### DESCRIPTION | |
8 | ### | |
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9 | ### Defines an m4 macro `AUTO_VERSION' which contains the current package's |
10 | ### version number, worked out in some clever way. | |
11 | ### | |
12 | ### The heavy lifting is performed by the `auto-version' script (q.v.). In | |
13 | ### brief: | |
14 | ### | |
15 | ### * if this is a Git working tree (i.e., there is a `.git' file or | |
16 | ### directory at toplevel) then call `git describe' and use its output; | |
17 | ### | |
18 | ### * if there is a `RELEASE' file, then use its contents literally; | |
19 | ### | |
20 | ### * if there is a `debian/changelog' file, then use the most recent | |
21 | ### entry's version number; | |
22 | ### | |
23 | ### * otherwise use `UNKNOWN'. | |
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24 | ### |
25 | ### LICENSE | |
26 | ### | |
27 | ### Copyright (c) 2008 Mark Wooding <mdw@distorted.org.uk> | |
28 | ### | |
29 | ### This program is free software: you can redistribute it and/or modify it | |
30 | ### under the terms of the GNU General Public License as published by the | |
31 | ### Free Software Foundation, either version 2 of the License, or (at your | |
32 | ### option) any later version. | |
33 | ### | |
34 | ### This program is distributed in the hope that it will be useful, but | |
35 | ### WITHOUT ANY WARRANTY; without even the implied warranty of | |
36 | ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
37 | ### General Public License for more details. | |
38 | ### | |
39 | ### You should have received a copy of the GNU General Public License along | |
40 | ### with this program. If not, see <http://www.gnu.org/licenses/>. | |
41 | ### | |
42 | ### As a special exception, the respective Autoconf Macro's copyright owner | |
43 | ### gives unlimited permission to copy, distribute and modify the configure | |
44 | ### scripts that are the output of Autoconf when processing the Macro. You | |
45 | ### need not follow the terms of the GNU General Public License when using | |
46 | ### or distributing such scripts, even though portions of the text of the | |
47 | ### Macro appear in them. The GNU General Public License (GPL) does govern | |
48 | ### all other use of the material that constitutes the Autoconf Macro. | |
49 | ### | |
50 | ### This special exception to the GPL applies to versions of the Autoconf | |
51 | ### Macro released by the Autoconf Archive. When you make and distribute a | |
52 | ### modified version of the Autoconf Macro, you may extend this special | |
53 | ### exception to the GPL to apply to your modified version as well. | |
fb2149fc | 54 | |
0bef29cb | 55 | # serial 1 |
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56 | AC_DEFUN([mdw_AUTO_VERSION], [m4_define([AUTO_VERSION], m4_esyscmd([ |
57 | ver=UNKNOWN | |
58 | for pre in ./ config/; do | |
59 | try=${pre}auto-version | |
60 | if test -x $try; then ver=$("$try"); break; fi | |
61 | done | |
62 | echo -n "$ver" | |
63 | ]))]) |