make.alpine: makefile to build alpine iso

tries to get correct dependencies for modloop, initramfs and iso
so minimum amount of work is required for rebuild.

1 files changed, 192 insertions, 0 deletions

diff --git a/make.alpine b/make.alpine
new file mode 100644
index 0000000..0438f3b
--- /dev/null
+++ b/make.alpine
@@ -0,0 +1,192 @@
+#!/usr/bin/make -f
+
+ISO		?= alpine-test.iso
+DESTDIR		?= $(shell pwd)/isotmp
+APKDIRS		?= ../aports/core/*/
+
+ISO_DIR		:= $(DESTDIR)/isofs
+
+find_apk	= $(firstword $(wildcard $(addprefix $(APKDIRS),$(1)-[0-9]*.apk)))
+
+KERNEL_APK	:= $(call find_apk,linux-grsec)
+MODULE_APK	:= $(wildcard $(subst /linux-grsec-,/linux-grsec-mod-,$(KERNEL_APK)))
+KERNEL		:= $(word 3,$(subst -, ,$(notdir $(KERNEL_APK))))-$(word 2,$(subst -, ,$(notdir $(KERNEL_APK))))
+
+ALPINEBASELAYOUT_APK := $(call find_apk,alpine-baselayout)
+UCLIBC_APK	:= $(call find_apk,uclibc)
+BUSYBOX_APK	:= $(call find_apk,busybox)
+APK_TOOLS_APK	:= $(call find_apk,apk-tools)
+
+SOURCE_APKS	:= $(wildcard $(APKDIRS)/*apk)
+APK_BIN		:= $(shell which apk)
+
+ifneq ($(words $(KERNEL_APK) $(MODULE_APK) $(ALPINEBASELAYOUT_APK) $(UCLIBC_APK) $(BUSYBOX_APK) $(APK_TOOLS_APK)),6)
+$(error I did not find all APKs which I need.)
+endif
+
+all: $(ISO)
+
+help:
+	@echo "Alpine ISO builder"
+	@echo
+	@echo "Type 'make' to build $(ISO)"
+	@echo
+	@echo "I will use the following sources files:"
+	@echo " 1. $(notdir $(KERNEL_APK)) (looks like $(KERNEL))"
+	@echo " 2. $(notdir $(MODULE_APK))"
+	@echo " 3. $(notdir $(ALPINEBASELAYOUT_APK))"
+	@echo " 4. $(notdir $(UCLIBC_APK))"
+	@echo " 5. $(notdir $(BUSYBOX_APK))"
+ifeq ($(APK_BIN),)
+	@echo " 6. $(notdir $(APK_TOOLS_APK))"
+else
+	@echo " 6. $(APK_BIN)"
+endif
+	@echo
+
+#clean:
+#	rm -rf $(DESTDIR)
+
+#
+# Modloop
+#
+MODLOOP		:= $(ISO_DIR)/boot/modloop.cmg
+MODLOOP_DIR	:= $(DESTDIR)/modloop
+MODLOOP_DIRSTAMP := $(DESTDIR)/stamp.modloop
+
+$(MODLOOP_DIRSTAMP): $(MODULE_APK)
+	@echo "==> modloop: prepare modules $(notdir $(MODULE_APK))"
+	@rm -rf $(MODLOOP_DIR)
+	@mkdir -p $(MODLOOP_DIR)/lib/modules/
+	@tar -C $(MODLOOP_DIR) -xzf $(MODULE_APK)
+	@rm -rf $(addprefix $(MODLOOP_DIR)/lib/modules/*/, source build)
+	@depmod $(KERNEL) -b $(MODLOOP_DIR)
+	@touch $(MODLOOP_DIRSTAMP)
+
+$(MODLOOP): $(MODLOOP_DIRSTAMP)
+	@echo "==> modloop: building image $(notdir $(MODLOOP))"
+	@mkdir -p $(dir $(MODLOOP))
+	@mkcramfs $(MODLOOP_DIR)/lib $(MODLOOP)
+
+#
+# Initramfs rules
+#
+
+INITFS		:= $(ISO_DIR)/boot/initramfs.gz
+
+INITFS_DIRSTAMP	:= $(DESTDIR)/stamp.initfs
+INITFS_DIR	:= $(DESTDIR)/initfs
+INITFS_MODDIR	:= $(INITFS_DIR)/lib/modules/$(KERNEL)
+INITFS_MODDIRSTAMP := $(DESTDIR)/stamp.initfs.modules
+
+INITFS_APKS	:= $(UCLIBC_APK) $(BUSYBOX_APK)
+INITFS_RAWBASEFILES  := etc/mdev.conf etc/passwd etc/group etc/fstab
+INITFS_BASEFILES     := $(addprefix $(INITFS_DIR)/, $(INITFS_RAWBASEFILES))
+
+$(INITFS_DIRSTAMP): $(INITFS_APKS)
+	@echo "==> initramfs: prepare baselayout"
+	@rm -rf $(INITFS_DIR)
+	@mkdir -p $(addprefix $(INITFS_DIR)/, \
+		dev proc sys sbin bin .modloop lib/modules \
+		media/cdrom media/floppy media/usb \
+		newroot/proc newroot/sys)
+	@for apk in $(INITFS_APKS) ; do \
+		tar -C $(INITFS_DIR) -xzf $$apk ; \
+	done
+	@rm -f "$(INITFS_DIR)/.PKGINFO"
+	@mknod $(INITFS_DIR)/dev/null c 1 3
+	@touch $(INITFS_DIRSTAMP)
+
+$(INITFS_BASEFILES): $(INITFS_DIRSTAMP) $(ALPINEBASELAYOUT_APK)
+	@echo "==> initramfs: $(notdir $(ALPINEBASELAYOUT_APK))"
+	@tar -C $(INITFS_DIR) -xzf $(ALPINEBASELAYOUT_APK) $(INITFS_RAWBASEFILES)
+	@touch $(INITFS_BASEFILES)
+
+$(INITFS_DIR)/init: initramfs-init $(INITFS_DIRSTAMP)
+	@echo "==> initramfs: init script"
+	@cp initramfs-init "$(INITFS_DIR)/init"
+
+ifeq ($(APK_BIN),)
+$(INITFS_DIR)/sbin/apk: $(APK_TOOLS_APK) $(INITFS_DIRSTAMP)
+	@echo "==> initramfs: $(notdir $(APK_TOOLS_APK))"
+	@tar -C $(INITFS_DIR) -xzf $(APK_TOOLS_APK) sbin/apk
+else
+$(INITFS_DIR)/sbin/apk: $(APK_BIN) $(INITFS_DIRSTAMP)
+	@echo "==> initramfs: copy $(APK_BIN) from buildroot"
+	@cp $(APK_BIN) "$(INITFS_DIR)/sbin"
+endif
+
+$(INITFS_MODDIRSTAMP): $(INITFS_DIRSTAMP) $(INITFS_MODFILES) $(MODLOOP_DIRSTAMP)
+	@echo "==> initramfs: $(notdir $(MODULE_APK))"
+	@rm -rf $(INITFS_DIR)/lib/modules
+	@mkdir -p $(addprefix $(INITFS_MODDIR)/kernel/,drivers fs)
+	@for i in acpi ata block ide scsi cdrom usb message hid; do \
+		cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/drivers/$$i \
+			$(INITFS_MODDIR)/kernel/drivers/ ; \
+	done
+	@for i in isofs vfat nls ext2 cramfs '*.ko'; do \
+		cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/fs/$$i \
+			$(INITFS_MODDIR)/kernel/fs/ ; \
+	done
+	@cp -flLpR $(MODLOOP_DIR)/lib/modules/*/kernel/lib \
+		$(INITFS_MODDIR)/kernel/
+	@depmod $(KERNEL) -b $(INITFS_DIR)
+	@touch $(INITFS_MODDIRSTAMP)
+
+$(INITFS): $(INITFS_DIRSTAMP) $(INITFS_DIR)/init $(INITFS_DIR)/sbin/apk $(INITFS_MODDIRSTAMP) $(INITFS_BASEFILES)
+	@echo "==> initramfs: creating $(notdir $(INITFS))"
+	@(cd $(INITFS_DIR) && find . | cpio -o -H newc | gzip -9) > $(INITFS)
+
+#
+# ISO rules
+#
+
+ISOLINUX	:= $(ISO_DIR)/isolinux
+ISOLINUX_BIN	:= $(ISOLINUX)/isolinux.bin
+ISOLINUX_CFG	:= $(ISOLINUX)/isolinux.cfg
+
+$(ISOLINUX_BIN): /usr/share/syslinux/isolinux.bin
+	@echo "==> iso: install isolinux"
+	@mkdir -p $(dir $(ISOLINUX_BIN))
+	@cp /usr/share/syslinux/isolinux.bin $(ISOLINUX_BIN)
+
+$(ISOLINUX_CFG):
+	@echo "==> iso: configure isolinux"
+	@mkdir -p $(dir $(ISOLINUX_BIN))
+	@echo "timeout 20" >$(ISOLINUX_CFG)
+	@echo "prompt 1" >>$(ISOLINUX_CFG)
+	@echo "default linux" >>$(ISOLINUX_CFG)
+	@echo "label linux" >>$(ISOLINUX_CFG)
+	@echo "	kernel /boot/vmlinuz" >>$(ISOLINUX_CFG)
+	@echo "	append initrd=/boot/initramfs.gz alpine_dev=cdrom quiet" >>$(ISOLINUX_CFG)
+
+ISO_KERNEL	:= $(ISO_DIR)/boot/vmlinuz
+ISO_APKS	:= $(ISO_DIR)/apks
+ISO_APKINDEX	:= $(ISO_APKS)/APK_INDEX.gz
+
+$(ISO_APKS): $(SOURCE_APKS)
+	@echo "==> iso: prepare APK repository"
+	@rm -rf $(ISO_APKS)
+	@mkdir -p $(ISO_APKS)
+	@for a in $(SOURCE_APKS) ; do \
+		ln -f $$a $(ISO_APKS) 2>/dev/null || cp $$a $(ISO_APKS) ; \
+	done
+	@apk index $(SOURCE_APKS) | gzip -9 > $(ISO_APKINDEX)
+
+$(ISO_KERNEL): $(KERNEL_APK)
+	@echo "==> iso: install kernel $(KERNEL)"
+	@mkdir -p $(dir $(ISO_KERNEL))
+	@tar -C $(ISO_DIR) -xzf $(KERNEL_APK) boot/vmlinuz boot/System.map
+	@touch $(ISO_KERNEL)
+
+$(ISO): $(MODLOOP) $(INITFS) $(ISOLINUX_CFG) $(ISOLINUX_BIN) $(ISO_KERNEL) $(ISO_APKS)
+	@echo "==> iso: building $(notdir $(ISO))"
+	@genisoimage -o $(ISO) -l -J -R \
+		-b isolinux/isolinux.bin \
+		-c isolinux/boot.cat	\
+		-no-emul-boot		\
+		-boot-load-size 4	\
+		-boot-info-table	\
+		-quiet			\
+		$(ISO_DIR)
+