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[thirdparty/binutils-gdb.git] / gdbsupport / check-defines.el
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1;; Verify that preprocessor symbols are defined in config.in.
2
3;; Copyright (C) 2020 Free Software Foundation, Inc.
4;;
5;; This file is part of GDB.
6;;
7;; This program 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
10;; (at your option) any later version.
11;;
12;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
19
20;; To use:
21;; cd gdbsupport
22;; emacs --script check-defines.el
23
24(require 'cl-lib)
25
26(setq-default case-fold-search nil)
27
28;; The currently recognized macros.
29(defconst check-regexp "\\_<\\(\\(HAVE\\|PTRACE_TYPE\\|SIZEOF\\)_[a-zA-Z0-9_]+\\)\\_>")
30
31(defvar check-seen 0)
32
33;; Whitelist. These are things that have names like autoconf-created
34;; macros, but that are managed directly in the code.
35(put (intern "HAVE_USEFUL_SBRK") :check-ok t)
36(put (intern "HAVE_SOCKETS") :check-ok t)
37(put (intern "HAVE_F_GETFD") :check-ok t)
38(put (intern "HAVE_IS_TRIVIALLY_COPYABLE") :check-ok t)
39(put (intern "HAVE_IS_TRIVIALLY_CONSTRUCTIBLE") :check-ok t)
40(put (intern "HAVE_DOS_BASED_FILE_SYSTEM") :check-ok t)
41
42(defun check-read-config.in (file)
43 (save-excursion
44 (find-file-read-only file)
45 (goto-char (point-min))
46 (while (re-search-forward "^#undef \\(.+\\)$" nil t)
47 (let ((name (match-string 1)))
48 (put (intern name) :check-ok t)))))
49
50(defun check-one-file (file)
51 (save-excursion
52 (find-file-read-only file)
53 (goto-char (point-min))
54 (while (re-search-forward check-regexp nil t)
55 (let ((name (match-string 1)))
56 (unless (get (intern name) :check-ok)
57 (save-excursion
58 (goto-char (match-beginning 0))
59 (cl-incf check-seen)
60 (message "%s:%d:%d: error: name %s not defined"
61 file
62 (line-number-at-pos)
63 (current-column)
64 name)))))))
65
66(defun check-directory (dir)
67 (dolist (file (directory-files dir t "\\.[ch]$"))
68 (check-one-file file)))
69
70(check-read-config.in "config.in")
71(check-read-config.in "../gnulib/config.in")
72(check-directory ".")
73(check-directory "../gdb/nat")
74(check-directory "../gdb/target")
75
76(when (> check-seen 0)
77 (message "%d errors seen" check-seen))