makefile

   1 include conf.mk
   2
   3 .PHONY:all dirs clean am_i_root help uevent_monitor
   4
   5 DIRS=\
   6 $(OBJ_DIR) \
   7 $(MODULES_DIR) \
   8 $(CPIO_DIR)/dev
   9
  10 OBJS=\
  11 $(OBJ_DIR)/init.o \
  12 $(OBJ_DIR)/modules.o
  13
  14 ifdef DEBUG
  15 ULINUX_DEBUG_OBJS=\
  16 $(OBJ_DIR)/mem.o \
  17 $(OBJ_DIR)/string.o \
  18 $(OBJ_DIR)/vsprintf.o
  19
  20 OBJS+= $(ULINUX_DEBUG_OBJS)
  21 endif
  22
  23 help:
  24         @echo "targets are 'all', 'help'(this output), 'clean', 'uevent_monitor'"
  25         @echo -e "you can configure the build with the following variables:\\n\
  26         SYSROOT, KERNEL_VERSION, ARCH, MODULES, SCSI_WAIT, CC, LD, CFLAGS, LDFLAGS\\n\
  27         (you can tune the conf.mk file)"
  28
  29 all:am_i_root dirs ulinux/arch $(BUILD_DIR)/initramfs.cpio.xz
  30
  31 am_i_root:
  32         @if [ $$(whoami) != root ];then echo *ERROR* must be root to build;false;fi
  33
  34 dirs:$(DIRS)
  35 $(DIRS):
  36         -mkdir -p $@
  37
  38 ulinux/arch:
  39         ln -s archs/$(ARCH) ulinux/arch
  40
  41 #===============================================================================
  42 ifdef DEBUG
  43 $(OBJ_DIR)/mem.o:ulinux/arch/utils/mem.c
  44         $(CC) $(CFLAGS) -c $< -o $@
  45
  46 $(OBJ_DIR)/string.o:ulinux/utils/ascii/string/string.c
  47         $(CC) $(CFLAGS) -c $< -o $@
  48
  49 $(OBJ_DIR)/vsprintf.o:ulinux/utils/ascii/string/vsprintf.c
  50         $(CC) $(CFLAGS) -c $< -o $@
  51 endif
  52 #===============================================================================
  53
  54 $(CPIO_DIR)/dev/console:
  55         mknod --mode=0600 $(CPIO_DIR)/dev/console c 5 1
  56
  57 $(BUILD_DIR)/initramfs.cpio:$(CPIO_DIR)/init $(CPIO_DIR)/dev/console
  58         chown -R 0:0 $(CPIO_DIR)
  59         DEST_FILE=$$(realpath $(BUILD_DIR))/initramfs.cpio;\
  60         cd $(CPIO_DIR);\
  61         find . -depth -print | cpio --format=newc --create >$${DEST_FILE}
  62
  63 $(BUILD_DIR)/initramfs.cpio.xz:$(BUILD_DIR)/initramfs.cpio
  64         xz --force --check=crc32 --extreme $<
  65
  66 $(OBJ_DIR)/modules.o:modules.c modules_list.h
  67         $(CC) $(CFLAGS) -c $< -o $@
  68
  69 $(OBJ_DIR)/init.o:init.c modules.h
  70         $(CC) $(CFLAGS) -c $< -o $@
  71
  72 $(CPIO_DIR)/init:$(OBJS)
  73         $(LD) $(LDFLAGS) $(OBJS) --output $@
  74
  75 modules_list.h:
  76         ./script/modules_list.sh >$@
  77
  78 clean:
  79         -rm -f ulinux/arch
  80         -rm -Rf $(BUILD_DIR)
  81         -rm -f modules_list.h
  82
  83 #===============================================================================
  84 $(BUILD_DIR)/uevent_monitor:uevent_monitor.c $(ULINUX_DEBUG_OBJS)
  85         $(CC) $(CFLAGS) -c $< -o /tmp/uevent_monitor.o
  86         $(LD) $(LDFLAGS) /tmp/uevent_monitor.o $(ULINUX_DEBUG_OBJS) --output $@
  87
  88 uevent_monitor:dirs ulinux/arch $(BUILD_DIR)/uevent_monitor
  89 #===============================================================================