kumquat-buildroot/fs/squashfs/squashfs.mk
Linus Kaschulla 555f8dfd6e fs/squashfs: Add block size option
One advantage of squashfs over similar technologies is the support for
bigger block sizes. However the default size is not a lot bigger
(typically 128k if no `-b` flag specified).

This patch adds the ability to select from common block sizes
which for example can aid in improving compression ratio.

Signed-off-by: Linus Kaschulla <linus@cosmos-ink.net>
[yann.morin.1998@free.fr:
  - drop spurious boolean-based setting in .mk
  - split into multi-line
  - qstrip variable expansion
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2022-05-17 07:51:18 +02:00

37 lines
1.0 KiB
Makefile

################################################################################
#
# Build the squashfs root filesystem image
#
################################################################################
ROOTFS_SQUASHFS_DEPENDENCIES = host-squashfs
ROOTFS_SQUASHFS_ARGS = \
-noappend \
-processors $(PARALLEL_JOBS) \
-b $(call qstrip,$(BR2_TARGET_ROOTFS_SQUASHFS_BS))
ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS_PAD),)
ROOTFS_SQUASHFS_ARGS += -nopad
endif
ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS4_LZ4),y)
ROOTFS_SQUASHFS_ARGS += -comp lz4 -Xhc
else ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS4_LZO),y)
ROOTFS_SQUASHFS_ARGS += -comp lzo
else ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS4_LZMA),y)
ROOTFS_SQUASHFS_ARGS += -comp lzma
else ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS4_XZ),y)
ROOTFS_SQUASHFS_ARGS += -comp xz
else ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS4_ZSTD),y)
ROOTFS_SQUASHFS_ARGS += -comp zstd
else
ROOTFS_SQUASHFS_ARGS += -comp gzip
endif
define ROOTFS_SQUASHFS_CMD
$(HOST_DIR)/bin/mksquashfs $(TARGET_DIR) $@ $(ROOTFS_SQUASHFS_ARGS)
endef
$(eval $(rootfs))