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-rw-r--r--lisp/emacs-lisp/comp.el7
1 files changed, 7 insertions, 0 deletions
diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
index cd1e4dbd92e..f23a0b29afc 100644
--- a/lisp/emacs-lisp/comp.el
+++ b/lisp/emacs-lisp/comp.el
@@ -133,6 +133,12 @@ finishes compiling all input files."
:type 'hook
:group 'comp)
+(defcustom comp-async-env-modifier-form nil
+ "Form to be evaluated by each asyncronous compilation worker
+before compilation. Usable to modify the compiler environment."
+ :type 'list
+ :group 'comp)
+
(defvar comp-dry-run nil
"When non nil run everything but the C back-end.")
@@ -2324,6 +2330,7 @@ display a message."
comp-debug ,comp-debug
comp-verbose ,comp-verbose
load-path ',load-path)
+ ,comp-async-env-modifier-form
(message "Compiling %s..." ,source-file)
(native-compile ,source-file ,(and load t))))
(source-file1 source-file) ;; Make the closure works :/