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fs/squashfs: Add option to compress with extreme options

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mksquashfs allows to tweak many compressions parameters. Currently they
can't be changed from kmenu. Leaving out potential space savings.

This adds the option to enable a set of predetermined compression
options. This option is enabled by default for lz4 since lz4 currently
implicitly added the extreme to it in the makefile. So this aids in
keeping backward compatibility.

Signed-off-by: Linus Kaschulla <linus@cosmos-ink.net>
[yann.morin.1998@free.fr:
  - fix check-package
  - change the default code-style, add the legacy comment
  - always add the qstriped string, as it's empty when not used
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Linus Kaschulla
2022-05-17 03:24:59 +00:00
committed by Yann E. MORIN
parent 555f8dfd6e
commit d9c144d5f5
2 changed files with 29 additions and 2 deletions
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5
fs/squashfs/squashfs.mk
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@@ -9,14 +9,15 @@ ROOTFS_SQUASHFS_DEPENDENCIES = host-squashfs
ROOTFS_SQUASHFS_ARGS = \
-noappend \
-processors $(PARALLEL_JOBS) \
-b $(call qstrip,$(BR2_TARGET_ROOTFS_SQUASHFS_BS))
-b $(call qstrip,$(BR2_TARGET_ROOTFS_SQUASHFS_BS)) \
$(call qstrip,$(BR2_TARGET_ROOTFS_SQUASHFS_COMP_OPTS))
ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS_PAD),)
ROOTFS_SQUASHFS_ARGS += -nopad
endif
ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS4_LZ4),y)
ROOTFS_SQUASHFS_ARGS += -comp lz4 -Xhc
ROOTFS_SQUASHFS_ARGS += -comp lz4
else ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS4_LZO),y)
ROOTFS_SQUASHFS_ARGS += -comp lzo
else ifeq ($(BR2_TARGET_ROOTFS_SQUASHFS4_LZMA),y)