kumquat-buildroot/fs/cpio/cpio.mk
Yann E. MORIN eb6e466c10 fs/cpio: allow users to provide their own dracut modules
Dracut modules can only be looked for in HOST_DIR/lib/dracut/modules.d/
as dracut does not offer the possibility to look elsewhere.

Installing files in HOST_DIR/ can do done either from a host-package, or
via a post-built script; there is no overlay like there is for target/.
This is a bit cumbersome.

Additional modules are most probably developped in a relatively tight
loop with the configuration files, so it makes sense to expose both
close together.

Add an option to the fs/cpio filesystem, so users can point to a list
of modules to install.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Thierry Bultel <thierry.bultel@linatsea.fr>
Cc: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2023-02-06 22:46:35 +01:00

110 lines
3.3 KiB
Makefile

################################################################################
#
# cpio to archive target filesystem
#
################################################################################
ifeq ($(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)
define ROOTFS_CPIO_ADD_INIT
if [ ! -e $(TARGET_DIR)/init ]; then \
ln -sf sbin/init $(TARGET_DIR)/init; \
fi
endef
else
# devtmpfs does not get automounted when initramfs is used.
# Add a pre-init script to mount it before running init
# We must have /dev/console very early, even before /init runs,
# for stdin/stdout/stderr
define ROOTFS_CPIO_ADD_INIT
if [ ! -e $(TARGET_DIR)/init ]; then \
$(INSTALL) -m 0755 fs/cpio/init $(TARGET_DIR)/init; \
fi
mkdir -p $(TARGET_DIR)/dev
mknod -m 0622 $(TARGET_DIR)/dev/console c 5 1
endef
endif # BR2_ROOTFS_DEVICE_CREATION_STATIC
ROOTFS_CPIO_PRE_GEN_HOOKS += ROOTFS_CPIO_ADD_INIT
# --reproducible option was introduced in cpio v2.12, which may not be
# available in some old distributions, so we build host-cpio
ifeq ($(BR2_REPRODUCIBLE),y)
ROOTFS_CPIO_DEPENDENCIES += host-cpio
ROOTFS_CPIO_OPTS += --reproducible
endif
ifeq ($(BR2_TARGET_ROOTFS_CPIO_FULL),y)
define ROOTFS_CPIO_CMD
cd $(TARGET_DIR) && \
find . \
| LC_ALL=C sort \
| cpio $(ROOTFS_CPIO_OPTS) --quiet -o -H newc \
> $@
endef
else ifeq ($(BR2_TARGET_ROOTFS_CPIO_DRACUT),y)
ROOTFS_CPIO_DEPENDENCIES += host-dracut
ROOTFS_CPIO_DRACUT_MODULES = $(call qstrip,$(BR2_TARGET_ROOTFS_CPIO_DRACUT_MODULES))
ifeq ($(BR_BUILDING),y)
ifneq ($(words $(ROOTFS_CPIO_DRACUT_MODULES)),$(words $(sort $(notdir $(ROOTFS_CPIO_DRACUT_MODULES)))))
$(error No two dracut modules can have the same basename, check your BR2_TARGET_ROOTFS_CPIO_DRACUT_MODULES setting)
endif
endif
ROOTFS_CPIO_DRACUT_CONF_FILES = $(call qstrip,$(BR2_TARGET_ROOTFS_CPIO_DRACUT_CONF_FILES))
ifeq ($(BR_BUILDING),y)
ifeq ($(ROOTFS_CPIO_DRACUT_CONF_FILES),)
$(error No dracut config file name specified, check your BR2_TARGET_ROOTFS_CPIO_DRACUT_CONF_FILES setting)
endif
ifneq ($(words $(ROOTFS_CPIO_DRACUT_CONF_FILES)),$(words $(sort $(notdir $(ROOTFS_CPIO_DRACUT_CONF_FILES)))))
$(error No two dracut config files can have the same basename, check your BR2_TARGET_ROOTFS_CPIO_DRACUT_CONF_FILES setting)
endif
endif
ifeq ($(BR2_LINUX_KERNEL),y)
ROOTFS_CPIO_DEPENDENCIES += linux
ROOTFS_CPIO_OPTS += --kver $(LINUX_VERSION_PROBED)
else
ROOTFS_CPIO_OPTS += --no-kernel
endif
define ROOTFS_CPIO_CMD
mkdir -p $(ROOTFS_CPIO_DIR)/tmp $(ROOTFS_CPIO_DIR)/confdir $(HOST_DIR)/lib/dracut/modules.d
touch $(ROOTFS_CPIO_DIR)/empty-config
$(foreach cfg,$(ROOTFS_CPIO_DRACUT_CONF_FILES), \
cp $(cfg) $(ROOTFS_CPIO_DIR)/confdir/$(notdir $(cfg))
)
$(foreach m,$(ROOTFS_CPIO_DRACUT_MODULES), \
cp -a $(m)/* $(HOST_DIR)/lib/dracut/modules.d/
)
$(HOST_DIR)/bin/dracut \
$(ROOTFS_CPIO_OPTS) \
-c $(ROOTFS_CPIO_DIR)/empty-config \
--confdir $(ROOTFS_CPIO_DIR)/confdir \
--sysroot $(TARGET_DIR) \
--tmpdir $(ROOTFS_CPIO_DIR)/tmp \
-M \
--force \
--no-compress \
$@
endef
endif #BR2_TARGET_ROOTFS_CPIO_DRACUT
ifeq ($(BR2_TARGET_ROOTFS_CPIO_UIMAGE),y)
ROOTFS_CPIO_DEPENDENCIES += host-uboot-tools
define ROOTFS_CPIO_UBOOT_MKIMAGE
$(MKIMAGE) -A $(MKIMAGE_ARCH) -T ramdisk \
-C none -d $@$(ROOTFS_CPIO_COMPRESS_EXT) $@.uboot
endef
ROOTFS_CPIO_POST_GEN_HOOKS += ROOTFS_CPIO_UBOOT_MKIMAGE
endif
$(eval $(rootfs))