1 /* Header file for the Emacs build fingerprint.
2
3 Copyright (C) 2016, 2018-2023 Free Software Foundation, Inc.
4
5 This file is part of GNU Emacs.
6
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or (at
10 your option) any later version.
11
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
19
20 #ifndef EMACS_FINGERPRINT_H
21 #define EMACS_FINGERPRINT_H
22
23 /* We generate fingerprint.c and fingerprint.o from all the sources in
24 Emacs. This way, we have a unique value that we can use to pair
25 data files (like a dump file) with a specific build of Emacs. */
26 extern volatile unsigned char fingerprint[32];
27
28 #endif