(compile-internal): Add optional argument no-async.

1 files changed, 7 insertions, 2 deletions

diff --git a/lisp/progmodes/compile.el b/lisp/progmodes/compile.el
index b0f2457df66..8ef974b5b1f 100644
--- a/lisp/progmodes/compile.el
+++ b/lisp/progmodes/compile.el
@@ -956,7 +956,8 @@ Otherwise, construct a buffer name from MODE-NAME."
                                  &optional name-of-mode parser
                                  error-regexp-alist name-function
                                  enter-regexp-alist leave-regexp-alist
-                                 file-regexp-alist nomessage-regexp-alist)
+                                 file-regexp-alist nomessage-regexp-alist
+                                 no-async)
   "Run compilation command COMMAND (low level interface).
 ERROR-MESSAGE is a string to print if the user asks to see another error
 and there are no more errors.  The rest of the arguments, 3-10 are optional.
@@ -975,7 +976,11 @@ NOMESSAGE-REGEXP-ALIST is the nomessage regexp alist to use.
 \ and `compilation-nomessage-regexp-alist', respectively.
 For arg 7-10 a value `t' means an empty alist.
 
+If NO-ASYNC is non-nil, start the compilation process synchronously.
+
 Returns the compilation buffer created."
+  (unless no-async
+    (setq no-async (not (fboundp 'start-process))))
   (let (outbuf)
     (save-excursion
       (or name-of-mode
@@ -1068,7 +1073,7 @@ Returns the compilation buffer created."
         (if compilation-process-setup-function
             (funcall compilation-process-setup-function))
         ;; Start the compilation.
-        (if (fboundp 'start-process)
+        (if (not no-async)
             (let* ((process-environment
                     (append
                      (if (and (boundp 'system-uses-terminfo)