speed up the full build by swapping lzma with gzip if run with --dev flag

Makefile

@@ -1,5 +1,6 @@
 include build.conf
 FORCE_PULL := 0
+DEV_BUILD  := 0
 
 
 compile: bin/rancheros
@@ -24,7 +25,7 @@ bin/rancheros: ros-build-image
 
 
 build-all: ros-build-image
-	./scripts/docker-run.sh make -f Makefile.docker FORCE_PULL=$(FORCE_PULL) $@
+	./scripts/docker-run.sh make -f Makefile.docker DEV_BUILD=$(DEV_BUILD) FORCE_PULL=$(FORCE_PULL) $@
 
 	mkdir -p bin dist
 	docker cp ros-build:/go/src/github.com/rancherio/os/bin/rancheros bin/
@@ -32,7 +33,7 @@ build-all: ros-build-image
 
 
 installer: ros-build-image
-	./scripts/docker-run.sh --rm make -f Makefile.docker FORCE_PULL=$(FORCE_PULL) $@
+	./scripts/docker-run.sh --rm make -f Makefile.docker DEV_BUILD=$(DEV_BUILD) FORCE_PULL=$(FORCE_PULL) $@
 
 
 version:

Makefile.docker

@@ -1,5 +1,6 @@
 include build.conf
 FORCE_PULL := 0
+DEV_BUILD  := 0
 
 
 bin/rancheros:
@@ -33,7 +34,7 @@ $(BUILD)/images.tar: bin/rancheros
 
 $(DIST)/artifacts/initrd: bin/rancheros assets/docker $(BUILD)/kernel/ $(BUILD)/images.tar
 	mkdir -p $(dir $@)
-	DFS_IMAGE=$(DFS_IMAGE) ./scripts/mk-initrd.sh
+	DFS_IMAGE=$(DFS_IMAGE) DEV_BUILD=$(DEV_BUILD) ./scripts/mk-initrd.sh
 
 
 $(DIST)/artifacts/rancheros.iso: minimal

build.sh

@@ -1,6 +1,17 @@
 #!/bin/bash
 set -e
 
+if [ "$1" != "--dev" ]; then
+  echo
+  echo Running \"production\" build. Will use lzma to compress initrd, which is somewhat slow...
+  echo Ctrl+C if you don\'t want this.
+  echo
+  echo For \"developer\" builds, run ./build.sh --dev
+  echo
   make all
+else
+  make DEV_BUILD=1 all
+fi
+
 
 ls -lh dist/artifacts

scripts/ci

@@ -9,4 +9,4 @@ fi
 
 docker build -t ros-build-base -f Dockerfile.build-base .
 docker build -t ros-build -f Dockerfile.build .
-./scripts/docker-run.sh --name ros-ci make -f Makefile.docker minimal integration-tests
+./scripts/docker-run.sh --name ros-ci make -f Makefile.docker DEV_BUILD=1 minimal integration-tests

scripts/mk-initrd.sh

@@ -27,4 +27,10 @@ docker export ${DFS} | tar xvf - -C ${INITRD_DIR}  --exclude=usr/bin/dockerlaunc
                                                    --exclude=usr/libexec/git-core \
                                                    usr
 
-cd ${INITRD_DIR} && find | cpio -H newc -o | lzma -c > ${DIST}/artifacts/initrd
+if [ "$DEV_BUILD" == "1" ]; then
+    COMPRESS=gzip
+else
+    COMPRESS=lzma
+fi
+
+cd ${INITRD_DIR} && find | cpio -H newc -o | ${COMPRESS} > ${DIST}/artifacts/initrd

scripts/run

@@ -84,7 +84,7 @@ if [ "$REBUILD" == "1" ]; then
     if [ ! -d ${INITRD_TMP} ]; then
         mkdir -p ${INITRD_TMP}
         pushd ${INITRD_TMP}
-        xz -dc ${INITRD} | cpio -idmv
+        xz -dfc ${INITRD} | gunzip -f | cpio -idm
         popd
     fi
 

tests/integration/assets/test_02/test-custom-kernel.sh

@@ -5,6 +5,6 @@ cd $(dirname $0)/../../../..
 
 cp ./tests/integration/assets/test_02/build.conf ./
 
-make -f Makefile.docker minimal
+make -f Makefile.docker DEV_BUILD=1 minimal
 
 exec ./scripts/run --qemu --no-rebuild --fresh