1 files changed, 110 insertions, 0 deletions
diff --git a/lisp/cedet/ede/make.el b/lisp/cedet/ede/make.el
new file mode 100644
index 00000000000..08598d08161
--- /dev/null
+++ b/lisp/cedet/ede/make.el
@@ -0,0 +1,110 @@
+;;; ede/make.el --- General information about "make"
+
+;;; Copyright (C) 2009 Free Software Foundation, Inc.
+
+;; Author: Eric M. Ludlam <eric@siege-engine.com>
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; This file needs to choose the version of "make" it wants to use.
+;; Whenever an executable "gmake" is available, we prefer that since
+;; it usually means GNU Make.  If it doesn't exist, use "make".
+;;
+;; Run tests on make --version to be sure it is GNU make so that
+;; logical error messages can be provided.
+
+;;; Code:
+
+(declare-function inversion-check-version "inversion")
+
+(if (fboundp 'locate-file)
+    (defsubst ede--find-executable (exec)
+      "Return an expanded file name for a program EXEC on the exec path."
+      (locate-file exec exec-path))
+
+  ;; Else, older version of Emacs.
+
+  (defsubst ede--find-executable (exec)
+    "Return an expanded file name for a program EXEC on the exec path."
+    (let ((p exec-path)
+	  (found nil))
+      (while (and p (not found))
+        (let ((f (expand-file-name exec (car p))))
+	  (if (file-exists-p f)
+	      (setq found f)))
+        (setq p (cdr p)))
+      found))
+  )
+
+(defvar ede-make-min-version "3.0"
+  "Minimum version of GNU make required.")
+
+(defcustom ede-make-command (cond ((ede--find-executable "gmake")
+				   "gmake")
+				  (t "make")) ;; What to do?
+  "The MAKE command to use for EDE when compiling.
+The makefile generated by EDE for C files uses syntax that depends on GNU Make,
+so this should be set to something that can execute GNU Make files."
+  :group 'ede
+  :type 'string)
+
+;;;###autoload
+(defun ede-make-check-version (&optional noerror)
+  "Check the version of GNU Make installed.
+The check passes if the MAKE version is no high enough, or if it
+is not GNU make.
+If NOERROR is non-nil, return t for success, nil for failure.
+If NOERROR is nil, then throw an error on failure.  Return t otherwise."
+  (interactive)
+  (let ((b (get-buffer-create "*EDE Make Version*"))
+	(cd default-directory)
+	(rev nil)
+	(ans nil)
+	)
+    (save-excursion
+      ;; Setup, and execute make.
+      (set-buffer b)
+      (setq default-directory cd)
+      (erase-buffer)
+      (call-process ede-make-command nil b nil
+		    "--version")
+      ;; Check the buffer for the string
+      (goto-char (point-min))
+      (when (looking-at "GNU Make\\(?: version\\)? \\([0-9][^,]+\\),")
+	(setq rev (match-string 1))
+	(require 'inversion)
+	(setq ans (not (inversion-check-version rev nil ede-make-min-version))))
+
+      ;; Answer reporting.
+      (when (and (interactive-p) ans)
+	(message "GNU Make version %s.  Good enough for CEDET." rev))
+
+      (when (and (not noerror) (not ans))
+	(error "EDE requires GNU Make version %s or later.  Configure `ede-make-command' to fix"
+	       ede-make-min-version))
+      ans)))
+
+(provide 'ede/make)
+
+;; Local variables:
+;; generated-autoload-file: "loaddefs.el"
+;; generated-autoload-feature: ede/loaddefs
+;; generated-autoload-load-name: "ede/make"
+;; End:
+
+;;; ede/make.el ends here