2 # Macro that builds the needed Makefile target to create a root
5 # The following variable must be defined before calling this macro
7 # ROOTFS_$(FSTYPE)_CMD, the command that generates the root
8 # filesystem image. A single command is allowed. The filename of the
9 # filesystem image that it must generate is $$@.
11 # The following variables can optionaly be defined
13 # ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to
14 # build the root filesystem (usually host tools)
16 # ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before
17 # generating the filesystem image
19 # ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after
20 # generating the filesystem image
22 # ROOTFS_$(FSTYPE)_POST_TARGETS, the list of targets that should be
23 # run after running the main filesystem target. This is useful for
24 # initramfs, to rebuild the kernel once the initramfs is generated.
26 # In terms of configuration option, this macro assumes that the
27 # BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable
28 # the generation of a filesystem image of a particular type. If
29 # configura options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP,
30 # BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or
31 # BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the
32 # macro will automatically generate a compressed filesystem image.
34 FAKEROOT_SCRIPT = $(BUILD_DIR)/_fakeroot.fs
35 FULL_DEVICE_TABLE = $(BUILD_DIR)/_device_table.txt
36 ROOTFS_DEVICE_TABLES = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE))
38 define ROOTFS_TARGET_INTERNAL
41 $(eval ROOTFS_$(2)_DEPENDENCIES += host-fakeroot host-makedevs $(if $(BR2_TARGET_ROOTFS_$(2)_LZMA),host-lzma))
43 $(BINARIES_DIR)/rootfs.$(1): $(ROOTFS_$(2)_DEPENDENCIES)
44 @$(call MESSAGE,"Generating root filesystem image rootfs.$(1)")
45 $(foreach hook,$(ROOTFS_$(2)_PRE_GEN_HOOKS),$(call $(hook))$(sep))
46 rm -f $(FAKEROOT_SCRIPT)
47 touch $(BUILD_DIR)/.fakeroot.00000
48 cat $(BUILD_DIR)/.fakeroot* > $(FAKEROOT_SCRIPT)
49 echo "chown -R 0:0 $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
50 ifneq ($(ROOTFS_DEVICE_TABLES),)
51 cat $(ROOTFS_DEVICE_TABLES) > $(FULL_DEVICE_TABLE)
52 echo "$(HOST_DIR)/usr/bin/makedevs -d $(FULL_DEVICE_TABLE) $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
54 echo "$(ROOTFS_$(2)_CMD)" >> $(FAKEROOT_SCRIPT)
55 chmod a+x $(FAKEROOT_SCRIPT)
56 $(HOST_DIR)/usr/bin/fakeroot -- $(FAKEROOT_SCRIPT)
57 -@rm -f $(FAKEROOT_SCRIPT) $(FULL_DEVICE_TABLE)
58 $(foreach hook,$(ROOTFS_$(2)_POST_GEN_HOOKS),$(call $(hook))$(sep))
59 ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y)
62 ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y)
65 ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y)
69 rootfs-$(1)-show-depends:
70 @echo $(ROOTFS_$(2)_DEPENDENCIES)
72 rootfs-$(1): $(BINARIES_DIR)/rootfs.$(1) $(ROOTFS_$(2)_POST_TARGETS)
74 ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y)
75 TARGETS += rootfs-$(1)
80 $(call ROOTFS_TARGET_INTERNAL,$(1),$(call UPPERCASE,$(1)))