From 5ae109fc2335b52f5d29cf38cf51aacbccf2f2fc Mon Sep 17 00:00:00 2001
From: Justin Cormack <justin@specialbusservice.com>
Date: Sat, 10 Sep 2016 20:40:16 +0100
Subject: [PATCH] build packages in parallel

Signed-off-by: Justin Cormack <justin@specialbusservice.com>
---
 alpine/Makefile          |  2 +-
 alpine/packages/Makefile | 29 ++++++++---------------------
 2 files changed, 9 insertions(+), 22 deletions(-)

diff --git a/alpine/Makefile b/alpine/Makefile
index 1a10603a4..daa853b9b 100644
--- a/alpine/Makefile
+++ b/alpine/Makefile
@@ -5,7 +5,7 @@ ETCFILES+=etc/inittab etc/fstab
 
 initrd.img: Dockerfile mkinitrd.sh init $(ETCFILES)
 	rm -f initrd.img
-	$(MAKE) -C packages
+	$(MAKE) -j -C packages
 	$(MAKE) -C kernel
 	docker build -t moby-initrd:build .
 	docker run --net=none --rm moby-initrd:build /bin/mkinitrd.sh > $@
diff --git a/alpine/packages/Makefile b/alpine/packages/Makefile
index 49339542b..4af716eca 100644
--- a/alpine/packages/Makefile
+++ b/alpine/packages/Makefile
@@ -1,23 +1,10 @@
-all:
-	$(MAKE) -C proxy
-	$(MAKE) -C diagnostics
-	$(MAKE) -C transfused
-	$(MAKE) -C tap-vsockd
-	$(MAKE) -C hvtools
-	$(MAKE) -C docker
-	$(MAKE) -C nc-vsock
-	$(MAKE) -C vsudd
-	$(MAKE) -C 9pmount-vsock
-	$(MAKE) -C iptables
+DEPS=proxy diagnostics transfused tap-vsockd hvtools docker nc-vsock vsudd 9pmount-vsock iptables
+.PHONY: clean $(DEPS)
+
+default: $(DEPS)
+
+$(DEPS):
+	$(MAKE) -C $@
 
 clean:
-	$(MAKE) -C proxy clean
-	$(MAKE) -C diagnostics clean
-	$(MAKE) -C transfused clean
-	$(MAKE) -C tap-vsockd clean
-	$(MAKE) -C docker clean
-	$(MAKE) -C hvtools clean
-	$(MAKE) -C nc-vsock clean
-	$(MAKE) -C vsudd clean
-	$(MAKE) -C 9pmount-vsock clean
-	$(MAKE) -C iptables clean
+	for f in $(DEPS); do $(MAKE) -C $$f clean; done