| 1 | ;;; ede/make.el --- General information about "make" |
| 2 | |
| 3 | ;;; Copyright (C) 2009, 2010 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Author: Eric M. Ludlam <eric@siege-engine.com> |
| 6 | |
| 7 | ;; This file is part of GNU Emacs. |
| 8 | |
| 9 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| 10 | ;; it under the terms of the GNU General Public License as published by |
| 11 | ;; the Free Software Foundation, either version 3 of the License, or |
| 12 | ;; (at your option) any later version. |
| 13 | |
| 14 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | ;; GNU General Public License for more details. |
| 18 | |
| 19 | ;; You should have received a copy of the GNU General Public License |
| 20 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 21 | |
| 22 | ;;; Commentary: |
| 23 | ;; |
| 24 | ;; This file needs to choose the version of "make" it wants to use. |
| 25 | ;; Whenever an executable "gmake" is available, we prefer that since |
| 26 | ;; it usually means GNU Make. If it doesn't exist, use "make". |
| 27 | ;; |
| 28 | ;; Run tests on make --version to be sure it is GNU make so that |
| 29 | ;; logical error messages can be provided. |
| 30 | |
| 31 | ;;; Code: |
| 32 | |
| 33 | (declare-function inversion-check-version "inversion") |
| 34 | |
| 35 | (if (fboundp 'locate-file) |
| 36 | (defsubst ede--find-executable (exec) |
| 37 | "Return an expanded file name for a program EXEC on the exec path." |
| 38 | (locate-file exec exec-path)) |
| 39 | |
| 40 | ;; Else, older version of Emacs. |
| 41 | |
| 42 | (defsubst ede--find-executable (exec) |
| 43 | "Return an expanded file name for a program EXEC on the exec path." |
| 44 | (let ((p exec-path) |
| 45 | (found nil)) |
| 46 | (while (and p (not found)) |
| 47 | (let ((f (expand-file-name exec (car p)))) |
| 48 | (if (file-exists-p f) |
| 49 | (setq found f))) |
| 50 | (setq p (cdr p))) |
| 51 | found)) |
| 52 | ) |
| 53 | |
| 54 | (defvar ede-make-min-version "3.0" |
| 55 | "Minimum version of GNU make required.") |
| 56 | |
| 57 | (defcustom ede-make-command (cond ((ede--find-executable "gmake") |
| 58 | "gmake") |
| 59 | (t "make")) ;; What to do? |
| 60 | "The MAKE command to use for EDE when compiling. |
| 61 | The makefile generated by EDE for C files uses syntax that depends on GNU Make, |
| 62 | so this should be set to something that can execute GNU Make files." |
| 63 | :group 'ede |
| 64 | :type 'string) |
| 65 | |
| 66 | ;;;###autoload |
| 67 | (defun ede-make-check-version (&optional noerror) |
| 68 | "Check the version of GNU Make installed. |
| 69 | The check passes if the MAKE version is no high enough, or if it |
| 70 | is not GNU make. |
| 71 | If NOERROR is non-nil, return t for success, nil for failure. |
| 72 | If NOERROR is nil, then throw an error on failure. Return t otherwise." |
| 73 | (interactive) |
| 74 | (let ((b (get-buffer-create "*EDE Make Version*")) |
| 75 | (cd default-directory) |
| 76 | (rev nil) |
| 77 | (ans nil) |
| 78 | ) |
| 79 | (with-current-buffer b |
| 80 | ;; Setup, and execute make. |
| 81 | (setq default-directory cd) |
| 82 | (erase-buffer) |
| 83 | (call-process ede-make-command nil b nil |
| 84 | "--version") |
| 85 | ;; Check the buffer for the string |
| 86 | (goto-char (point-min)) |
| 87 | (when (looking-at "GNU Make\\(?: version\\)? \\([0-9][^,]+\\),") |
| 88 | (setq rev (match-string 1)) |
| 89 | (require 'inversion) |
| 90 | (setq ans (not (inversion-check-version rev nil ede-make-min-version)))) |
| 91 | |
| 92 | ;; Answer reporting. |
| 93 | (when (and (called-interactively-p 'interactive) ans) |
| 94 | (message "GNU Make version %s. Good enough for CEDET." rev)) |
| 95 | |
| 96 | (when (and (not noerror) (not ans)) |
| 97 | (error "EDE requires GNU Make version %s or later. Configure `ede-make-command' to fix" |
| 98 | ede-make-min-version)) |
| 99 | ans))) |
| 100 | |
| 101 | (provide 'ede/make) |
| 102 | |
| 103 | ;; Local variables: |
| 104 | ;; generated-autoload-file: "loaddefs.el" |
| 105 | ;; generated-autoload-load-name: "ede/make" |
| 106 | ;; End: |
| 107 | |
| 108 | ;; arch-tag: cc54abdb-7ca5-4902-9735-eda3c6a77852 |
| 109 | ;;; ede/make.el ends here |