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| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2010-03-10 00:11:58 +0100 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2010-04-09 11:04:34 +0200 |
| commit | 21f3bcc1868022e990c0d7ec4171727722b41fd9 (patch) | |
| tree | aac11d39d30cd0e4d6cc3b70d8de856d5f14a3d8 /target/common.mk | |
| parent | b605699f1f365c55d094c47737d3f5f7e38c1f61 (diff) | |
target: Add new infrastructure for filesystem generation
In order to avoid code duplication between the different filesystem
generation makefile, we introduce a ROOTFS_TARGET macro. Documentation
for this macro is contained in the patch.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'target/common.mk')
| -rw-r--r-- | target/common.mk | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/target/common.mk b/target/common.mk new file mode 100644 index 000000000..c7eff7435 --- /dev/null +++ b/target/common.mk @@ -0,0 +1,68 @@ +# +# Macro that builds the needed Makefile target to create a root +# filesystem image. +# +# The following variable must be defined before calling this macro +# +# ROOTFS_$(FSTYPE)_CMD, the command that generates the root +# filesystem image. A single command is allowed. The filename of the +# filesystem image that it must generate is $$@. +# +# The following variables can optionaly be defined +# +# ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to +# build the root filesystem (usually host tools) +# +# ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before +# generating the filesystem image +# +# ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after +# generating the filesystem image +# +# In terms of configuration option, this macro assumes that the +# BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable +# the generation of a filesystem image of a particular type. If +# configura options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP, +# BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or +# BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the +# macro will automatically generate a compressed filesystem image. + +FAKEROOT_SCRIPT = $(BUILD_DIR)/_fakeroot.fs + +define ROOTFS_TARGET_INTERNAL + +$(IMAGE).$(1): $(ROOTFS_$(2)_DEPENDENCIES) host-fakeroot makedevs $(if $(BR2_TARGET_ROOTFS_$(2)_LZMA),host-lzma) + @$(call MESSAGE,"Generating root filesystem image $(IMAGE).$(1)") + $(foreach hook,$(ROOTFS_$(2)_PRE_GEN_HOOKS),$(call $(hook))$(sep)) + rm -f $(FAKEROOT_SCRIPT) + touch $(BUILD_DIR)/.fakeroot.00000 + cat $(BUILD_DIR)/.fakeroot* > $(FAKEROOT_SCRIPT) + echo "chown -R 0:0 $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT) +ifneq ($(TARGET_DEVICE_TABLE),) + echo "$(HOST_DIR)/usr/bin/makedevs -d $(TARGET_DEVICE_TABLE) $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT) +endif + echo "$(ROOTFS_$(2)_CMD)" >> $(FAKEROOT_SCRIPT) + chmod a+x $(FAKEROOT_SCRIPT) + $(HOST_DIR)/usr/bin/fakeroot -- $(FAKEROOT_SCRIPT) + -@rm -f $(FAKEROOT_SCRIPT) + $(foreach hook,$(ROOTFS_$(2)_POST_GEN_HOOKS),$(call $(hook))$(sep)) +ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y) + gzip -9 -c $$@ > $$@.gz +endif +ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y) + bzip2 -9 -c $$@ > $$@.bz2 +endif +ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y) + $(LZMA) -9 -c $$@ > $$@.lzma +endif + +$(1)-root: $(IMAGE).$(1) + +ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y) +TARGETS += $(1)-root +endif +endef + +define ROOTFS_TARGET +$(call ROOTFS_TARGET_INTERNAL,$(1),$(call UPPERCASE,$(1))) +endef
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