From b537e759ef1bf262a519e20810aa296de70b4b5b Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 7 Jul 2016 23:58:01 +0000
Subject: [PATCH] add extract_all rule to top-level makefile

this is useful for preparing to automate multiple builds using shared
source trees. otherwise concurrent builds could clash attempting to
extract the same source trees.
---
 Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Makefile b/Makefile
index 703d917..7b57cc9 100644
--- a/Makefile
+++ b/Makefile
@@ -123,6 +123,8 @@ musl-git-%:
 	mv $@.tmp/$@ $@
 	rm -rf $@.tmp
 
+extract_all: | $(SRC_DIRS)
+
 
 # Rules for building.