Refactored Makefile

Author: moul

Makefile

@@ -1,43 +1,28 @@
 S3_TARGET ?=	s3://$(shell whoami)/
 BUSYBOX_URL ?=	http://launchpadlibrarian.net/181784411/busybox-static_1.22.0-8ubuntu1_armhf.deb
+KERNEL_URL ?=	http://ports.ubuntu.com/ubuntu-ports/dists/lucid/main/installer-armel/current/images/versatile/netboot/vmlinuz
+CMDLINE ?=	'root=/dev/ram'
 
-uInitrd:	initrd.gz
-	mkimage -A arm -O linux -T ramdisk -C none -a 0 -e 0 -n initramfs -d $< $@
-
-initrd.gz:	tree tree/init tree/functions tree/bin/busybox tree/bin/sh
-	cd tree && find . -print0 | cpio --null -ov --format=newc | gzip -9 > $(PWD)/$@
-
-tree/bin/sh:
-	cd tree && mkdir -p bin sbin etc proc sys newroot usr/bin usr/sbin
-	ln -s busybox tree/bin/sh || true
-
-tree/bin/busybox:
-	mkdir -p $(shell dirname $@)
-	docker run -it --rm \
-		-v $(PWD)/tree/bin:/host/bin \
-		busybox \
-		/bin/sh -xec ' \
-		  cd /tmp && \
-		  wget $(BUSYBOX_URL) -O busybox.deb && \
-		  ar x busybox.deb && \
-		  xz -d data.tar.xz && \
-		  tar xf data.tar && \
-		  cp bin/busybox /host/bin/busybox \
-		'
-	chmod +x $@
 
-.PHONY: publish_on_s3 qemu dist dist_do dist_teardown
+.PHONY: publish_on_s3 qemu dist dist_do dist_teardown all
 
+# Phonies
+all:	uInitrd
 
 qemu:    vmlinuz initrd.gz
-	qemu-system-arm -M versatilepb -cpu cortex-a8 -kernel ./vmlinuz -initrd ./initrd.gz -m 256 -append 'root=/dev/ram'
+	qemu-system-arm \
+		-M versatilepb \
+		-cpu cortex-a8 \
+		-kernel ./vmlinuz \
+		-initrd ./initrd.gz \
+		-m 256 \
+		-append $(CMDLINE)
 
 publish_on_s3:	uInitrd initrd.gz
 	for file in $<; do \
 	  s3cmd put --acl-public $$file $(S3_TARGET); \
 	done
 
-
 dist:
 	$(MAKE) dist_do || $(MAKE) dist_teardown
 
@@ -53,6 +38,33 @@ dist_do:
 dist_teardown:
 	git checkout master
 
+
+# Files
 vmlinuz:
-	#wget -O $@ http://ports.ubuntu.com/ubuntu-ports/dists/utopic/main/installer-armhf/current/images/generic/netboot/vmlinuz
-	wget -O $@ http://ports.ubuntu.com/ubuntu-ports/dists/lucid/main/installer-armel/current/images/versatile/netboot/vmlinuz
+	wget -O $@ $(KERNEL_URL)
+
+
+uInitrd:	initrd.gz
+	mkimage -A arm -O linux -T ramdisk -C none -a 0 -e 0 -n initramfs -d $< $@
+
+initrd.gz:	tree tree/init tree/functions tree/bin/busybox tree/bin/sh
+	cd tree && find . -print0 | cpio --null -ov --format=newc | gzip -9 > $(PWD)/$@
+
+tree/bin/sh:
+	cd tree && mkdir -p bin sbin etc proc sys newroot usr/bin usr/sbin
+	ln -s busybox tree/bin/sh || true
+
+tree/bin/busybox:
+	mkdir -p $(shell dirname $@)
+	docker run -it --rm \
+		-v $(PWD)/tree/bin:/host/bin \
+		busybox \
+		/bin/sh -xec ' \
+		  cd /tmp && \
+		  wget $(BUSYBOX_URL) -O busybox.deb && \
+		  ar x busybox.deb && \
+		  xz -d data.tar.xz && \
+		  tar xf data.tar && \
+		  cp bin/busybox /host/bin/busybox \
+		'
+	chmod +x $@