098cea58fc
Using the GZIP environment variable to pass gzip options is
deprecated, and therefore we are going to remove the "GZIP = -n"
definition from the main Buildroot Makefile. In preparation for this,
we explicitly add the -n argument to the gzip call in fs/common.mk to
ensure reproducibility.
Signed-off-by: Atharva Lele <itsatharva@gmail.com>
Acked-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 44d17dd128)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
172 lines
6.2 KiB
Makefile
172 lines
6.2 KiB
Makefile
#
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# Macro that builds the needed Makefile target to create a root
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# filesystem image.
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#
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# The following variable must be defined before calling this macro
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#
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# ROOTFS_$(FSTYPE)_CMD, the command that generates the root
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# filesystem image. A single command is allowed. The filename of the
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# filesystem image that it must generate is $$@.
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#
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# The following variables can optionaly be defined
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#
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# ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to
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# build the root filesystem (usually host tools)
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#
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# ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before
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# generating the filesystem image
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#
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# ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after
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# generating the filesystem image
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#
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# In terms of configuration option, this macro assumes that the
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# BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable
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# the generation of a filesystem image of a particular type. If
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# the configuration options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP,
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# BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or
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# BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the
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# macro will automatically generate a compressed filesystem image.
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FS_DIR = $(BUILD_DIR)/buildroot-fs
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ROOTFS_DEVICE_TABLES = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE) \
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$(BR2_ROOTFS_STATIC_DEVICE_TABLE))
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ROOTFS_USERS_TABLES = $(call qstrip,$(BR2_ROOTFS_USERS_TABLES))
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ROOTFS_FULL_DEVICES_TABLE = $(FS_DIR)/full_devices_table.txt
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ROOTFS_FULL_USERS_TABLE = $(FS_DIR)/full_users_table.txt
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ifeq ($(BR2_REPRODUCIBLE),y)
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define ROOTFS_REPRODUCIBLE
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find $(TARGET_DIR) -print0 | xargs -0 -r touch -hd @$(SOURCE_DATE_EPOCH)
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endef
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endif
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ROOTFS_COMMON_DEPENDENCIES = \
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host-fakeroot host-makedevs \
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$(BR2_TAR_HOST_DEPENDENCY) \
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$(if $(PACKAGES_USERS)$(ROOTFS_USERS_TABLES),host-mkpasswd)
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.PHONY: rootfs-common
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rootfs-common: $(ROOTFS_COMMON_DEPENDENCIES) target-finalize
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@$(call MESSAGE,"Generating root filesystems common tables")
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rm -rf $(FS_DIR)
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mkdir -p $(FS_DIR)
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$(call PRINTF,$(PACKAGES_USERS)) >> $(ROOTFS_FULL_USERS_TABLE)
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ifneq ($(ROOTFS_USERS_TABLES),)
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cat $(ROOTFS_USERS_TABLES) >> $(ROOTFS_FULL_USERS_TABLE)
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endif
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$(call PRINTF,$(PACKAGES_PERMISSIONS_TABLE)) > $(ROOTFS_FULL_DEVICES_TABLE)
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ifneq ($(ROOTFS_DEVICE_TABLES),)
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cat $(ROOTFS_DEVICE_TABLES) >> $(ROOTFS_FULL_DEVICES_TABLE)
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endif
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ifeq ($(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)
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$(call PRINTF,$(PACKAGES_DEVICES_TABLE)) >> $(ROOTFS_FULL_DEVICES_TABLE)
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endif
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rootfs-common-show-depends:
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@echo $(ROOTFS_COMMON_DEPENDENCIES)
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# Since this function will be called from within an $(eval ...)
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# all variable references except the arguments must be $$-quoted.
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define inner-rootfs
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ROOTFS_$(2)_IMAGE_NAME ?= rootfs.$(1)
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ROOTFS_$(2)_FINAL_IMAGE_NAME = $$(strip $$(ROOTFS_$(2)_IMAGE_NAME))
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ROOTFS_$(2)_DIR = $$(FS_DIR)/$(1)
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ROOTFS_$(2)_TARGET_DIR = $$(ROOTFS_$(2)_DIR)/target
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ROOTFS_$(2)_DEPENDENCIES += rootfs-common
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y)
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ROOTFS_$(2)_COMPRESS_EXT = .gz
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ROOTFS_$(2)_COMPRESS_CMD = gzip -9 -c -n
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y)
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ROOTFS_$(2)_COMPRESS_EXT = .bz2
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ROOTFS_$(2)_COMPRESS_CMD = bzip2 -9 -c
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y)
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ROOTFS_$(2)_DEPENDENCIES += host-lzma
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ROOTFS_$(2)_COMPRESS_EXT = .lzma
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ROOTFS_$(2)_COMPRESS_CMD = $$(LZMA) -9 -c
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZ4),y)
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ROOTFS_$(2)_DEPENDENCIES += host-lz4
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ROOTFS_$(2)_COMPRESS_EXT = .lz4
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ROOTFS_$(2)_COMPRESS_CMD = lz4 -l -9 -c
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZO),y)
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ROOTFS_$(2)_DEPENDENCIES += host-lzop
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ROOTFS_$(2)_COMPRESS_EXT = .lzo
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ROOTFS_$(2)_COMPRESS_CMD = $$(LZOP) -9 -c
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_XZ),y)
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ROOTFS_$(2)_DEPENDENCIES += host-xz
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ROOTFS_$(2)_COMPRESS_EXT = .xz
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ROOTFS_$(2)_COMPRESS_CMD = xz -9 -C crc32 -c
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endif
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$$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME): ROOTFS=$(2)
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$$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME): FAKEROOT_SCRIPT=$$(ROOTFS_$(2)_DIR)/fakeroot
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$$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME): $$(ROOTFS_$(2)_DEPENDENCIES)
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@$$(call MESSAGE,"Generating filesystem image $$(ROOTFS_$(2)_FINAL_IMAGE_NAME)")
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mkdir -p $$(@D)
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rm -rf $$(ROOTFS_$(2)_DIR)
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mkdir -p $$(ROOTFS_$(2)_DIR)
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rsync -auH \
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--exclude=/$$(notdir $$(TARGET_DIR_WARNING_FILE)) \
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$$(BASE_TARGET_DIR)/ \
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$$(TARGET_DIR)
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echo '#!/bin/sh' > $$(FAKEROOT_SCRIPT)
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echo "set -e" >> $$(FAKEROOT_SCRIPT)
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echo "chown -h -R 0:0 $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
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PATH=$$(BR_PATH) $$(TOPDIR)/support/scripts/mkusers $$(ROOTFS_FULL_USERS_TABLE) $$(TARGET_DIR) >> $$(FAKEROOT_SCRIPT)
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echo "$$(HOST_DIR)/bin/makedevs -d $$(ROOTFS_FULL_DEVICES_TABLE) $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
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$$(foreach s,$$(call qstrip,$$(BR2_ROOTFS_POST_FAKEROOT_SCRIPT)),\
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echo "echo '$$(TERM_BOLD)>>> Executing fakeroot script $$(s)$$(TERM_RESET)'" >> $$(FAKEROOT_SCRIPT); \
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echo $$(EXTRA_ENV) $$(s) $$(TARGET_DIR) $$(BR2_ROOTFS_POST_SCRIPT_ARGS) >> $$(FAKEROOT_SCRIPT)$$(sep))
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$$(foreach hook,$$(ROOTFS_PRE_CMD_HOOKS),\
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$$(call PRINTF,$$($$(hook))) >> $$(FAKEROOT_SCRIPT)$$(sep))
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$$(foreach hook,$$(ROOTFS_$(2)_PRE_GEN_HOOKS),\
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$$(call PRINTF,$$($$(hook))) >> $$(FAKEROOT_SCRIPT)$$(sep))
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$$(call PRINTF,$$(ROOTFS_REPRODUCIBLE)) >> $$(FAKEROOT_SCRIPT)
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$$(call PRINTF,$$(ROOTFS_$(2)_CMD)) >> $$(FAKEROOT_SCRIPT)
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chmod a+x $$(FAKEROOT_SCRIPT)
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PATH=$$(BR_PATH) FAKEROOTDONTTRYCHOWN=1 $$(HOST_DIR)/bin/fakeroot -- $$(FAKEROOT_SCRIPT)
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$(Q)rm -rf $$(TARGET_DIR)
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ifneq ($$(ROOTFS_$(2)_COMPRESS_CMD),)
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PATH=$$(BR_PATH) $$(ROOTFS_$(2)_COMPRESS_CMD) $$@ > $$@$$(ROOTFS_$(2)_COMPRESS_EXT)
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endif
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$$(foreach hook,$$(ROOTFS_$(2)_POST_GEN_HOOKS),$$(call $$(hook))$$(sep))
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rootfs-$(1)-show-depends:
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@echo $$(ROOTFS_$(2)_DEPENDENCIES)
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rootfs-$(1): $$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME)
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.PHONY: rootfs-$(1) rootfs-$(1)-show-depends
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y)
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TARGETS_ROOTFS += rootfs-$(1)
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PACKAGES += $$(filter-out rootfs-%,$$(ROOTFS_$(2)_DEPENDENCIES) $$(ROOTFS_COMMON_DEPENDENCIES))
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endif
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# Check for legacy POST_TARGETS rules
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ifneq ($$(ROOTFS_$(2)_POST_TARGETS),)
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$$(error Filesystem $(1) uses post-target rules, which are no longer supported.\
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Update $(1) to use post-gen hooks instead)
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endif
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endef
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# $(pkgname) also works well to return the filesystem name
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rootfs = $(call inner-rootfs,$(pkgname),$(call UPPERCASE,$(pkgname)))
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include $(sort $(wildcard fs/*/*.mk))
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