From 8a1af4f87f2caf70e57b9d7a6a181600c82020de Mon Sep 17 00:00:00 2001
From: espie <espie@openbsd.org>
Date: Sun, 9 Jul 2017 15:28:00 +0000
Subject: [PATCH] there's no need to fork/exec to execute comments okay
 millert@

---
 usr.bin/make/engine.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/usr.bin/make/engine.c b/usr.bin/make/engine.c
index f6684cfa4ef..2b1437c3468 100644
--- a/usr.bin/make/engine.c
+++ b/usr.bin/make/engine.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: engine.c,v 1.52 2017/01/29 10:04:13 espie Exp $ */
+/*	$OpenBSD: engine.c,v 1.53 2017/07/09 15:28:00 espie Exp $ */
 /*
  * Copyright (c) 2012 Marc Espie.
  *
@@ -784,6 +784,10 @@ do_run_command(Job *job)
 	/* always flush for other stuff */
 	fflush(stdout);
 
+	/* Optimization: bypass comments entirely */
+	if (*cmd == '#')
+		return false;
+
 	/* Fork and execute the single command. If the fork fails, we abort.  */
 	switch (cpid = fork()) {
 	case -1:
-- 
2.20.1