Makefile

   1 #
   2 # initramfs/Makefile
   3 #
   4
   5 TARGET = arm-crux-linux-gnueabi
   6 DEVICE = versatile
   7
   8 PWD  = $(shell pwd)
   9 WORK = $(PWD)/work
  10 CLFS = $(PWD)/../toolchain/clfs
  11 CROSSTOOLS = $(PWD)/../toolchain/crosstools
  12
  13
  14 KERNEL_PATH = $(PWD)/../kernel/$(DEVICE)
  15 KERNEL_VERSION = $(shell grep '^KERNEL_VERSION = ' $(KERNEL_PATH)/Makefile | sed 's|KERNEL_VERSION = ||')
  16
  17 BUSYBOX_SOURCE   = http://busybox.net/downloads/busybox-$(BUSYBOX_VERSION).tar.bz2
  18 BUSYBOX_VERSION  = 1.18.4
  19
  20 .PHONY: all check-root busybox initramfs clean distclean
  21
  22 all: busybox initramfs
  23
  24 clean: busybox-clean initramfs-clean
  25
  26 dist-clean: busybox-distclean gen_init_cpio-distclean initramfs-distclean
  27
  28 check-root:
  29         @if [ "$$UID" != "0" ]; then \
  30                 echo "You need to be root to do this."; \
  31                 echo "Now you should run 'make initramfs' as root to finish compilation or 'sudo make initramfs'."; \
  32                 exit 1; \
  33         fi
  34
  35 $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2:
  36         wget -P $(WORK) -c http://busybox.net/downloads/busybox-$(BUSYBOX_VERSION).tar.bz2
  37
  38 $(WORK)/busybox-$(BUSYBOX_VERSION): $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2 $(PWD)/busybox-$(BUSYBOX_VERSION).config
  39         tar -C $(WORK) -xvjf $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2
  40         cp -v $(PWD)/busybox-$(BUSYBOX_VERSION).config $(WORK)/busybox-$(BUSYBOX_VERSION)/.config
  41         touch $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2
  42
  43 $(WORK)/busybox-$(BUSYBOX_VERSION)/_install: $(WORK)/busybox-$(BUSYBOX_VERSION)
  44         export PATH=$(CROSSTOOLS)/bin:$$PATH &&  \
  45         export LD_LIBRARY_PATH=$(CROSSTOOLS)/lib:$$LD_LIBRARY_PATH && \
  46         make -C $(WORK)/busybox-$(BUSYBOX_VERSION) ARCH=arm CROSS_COMPILE=$(TARGET)- install
  47         touch $(WORK)/busybox-$(BUSYBOX_VERSION)/_install
  48
  49 busybox: $(WORK)/busybox-$(BUSYBOX_VERSION)/_install
  50
  51 busybox-clean:
  52         rm -vrf $(WORK)/busybox-$(BUSYBOX_VERSION)
  53
  54 busybox-distclean: busybox-clean
  55         rm -vf $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2
  56
  57 $(WORK)/gen_init_cpio: $(WORK)/gen_init_cpio.c
  58         cd $(WORK) && \
  59                 $(CC) $(CFLAGS) -Wall -o gen_init_cpio gen_init_cpio.c
  60
  61 gen_init_cpio: $(WORK)/gen_init_cpio
  62
  63 gen_init_cpio-clean:
  64         rm -rf $(WORK)/gen_init_cpio
  65
  66 gen_init_cpio-distclean: gen_init_cpio-clean
  67
  68 $(WORK)/initramfs.cpio.gz-$(KERNEL_VERSION): check-root $(WORK)/busybox-$(BUSYBOX_VERSION)/_install $(KERNEL_PATH) $(WORK)/gen_init_cpio $(WORK)/initramfs.lst
  69         mkdir -p $(WORK)/mnt
  70         cp -drv $(PWD)/filesystem/* $(WORK)/busybox-$(BUSYBOX_VERSION)/_install/* $(WORK)/mnt
  71         ln -s /bin/busybox $(WORK)/mnt/init
  72         cd $(WORK)/mnt && \
  73                 $(WORK)/gen_init_cpio $(WORK)/initramfs.lst | cpio -id && \
  74                 find * | cpio -H newc -o > $(WORK)/initramfs.cpio && \
  75                 gzip -v9 $(WORK)/initramfs.cpio
  76         mv $(WORK)/initramfs.cpio.gz{,-$(KERNEL_VERSION)}
  77         rm -rf $(WORK)/mnt
  78
  79 initramfs: $(WORK)/initramfs.cpio.gz-$(KERNEL_VERSION)
  80
  81 initramfs-clean:
  82         rm -rf $(WORK)/initramfs-$(KERNEL_VERSION) $(WORK)/mnt $(WORK)/initramfs.cpio.gz-$(KERNEL_VERSION)
  83
  84 initramfs-distclean: initramfs-clean
  85
  86 # End of file