Makefile.dkms

COMMIT_REV := $(shell git describe  --always --abbrev=12)
DKMS_DEST ?= /var/lib/dkms/flashcache/$(COMMIT_REV)/source
KERNEL_VERSION ?= $(shell uname -r)
# statically link for inclusion in initramfs
CFLAGS += -static
export COMMIT_REV CFLAGS

UTILS := /sbin/flashcache_load /sbin/flashcache_create /sbin/flashcache_destroy

.PHONY: all
all: install

.PHONY: install
install: build utils
	dkms install -m flashcache -v $(COMMIT_REV) -k $(KERNEL_VERSION)

.PHONY: build
build: src_install
	dkms build -m flashcache -v $(COMMIT_REV) -k $(KERNEL_VERSION)

.PHONY: src_install
src_install:
	install -o root -g root -m 0755 -d $(DKMS_DEST)
	rsync -r src/ $(DKMS_DEST)/
	sed "s/PACKAGE_VERSION=/PACKAGE_VERSION=$(COMMIT_REV)/" src/dkms.conf > "$(DKMS_DEST)/dkms.conf"

.PHONY: boot_conf
boot_conf: utils
	# do mkinitramfs install if present
	if test -d /etc/initramfs-tools/hooks; then \
		install -o root -g root src/flashcache.hook /etc/initramfs-tools/hooks/flashcache ; \
		install -o root -g root src/utils/flashcache_scan /etc/initramfs-tools/scripts/init-premount/ ; \
		update-initramfs -k $(shell uname -r) -u ; \
	fi

.PHONY: utils
utils:
	$(MAKE) -C src/utils install

.PHONY: clean
clean:
	$(MAKE) -f Makefile clean
	dkms remove -m flashcache -v $(COMMIT_REV) --all
	rm /etc/initramfs-tools/hooks/flashcache
	rm /etc/initramfs-tools/scripts/init-premount/flashcache_scan