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linux-firmware: Compress firmware on disk

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This patch enabled that we can compress any firmware files on disk. This
will save some space since /lib/firmware is becoming larger with every
release.

From formerly 828MiB, this is now using ~349MiB which is a saving of
about 480MiB on disk. This is helping us a lot fighting to contain the
distribution to 2GB on /.

Some other firmware that is installed in other packages is not
compressed with this patch which is a bit sad, but potentially not worth
the effort.

In order to ship this change with a Core Update, it might be intuitive
to remove /lib/firmware first and then extract the new update with all
new files. However, I do not know if this all will compress as well as
before since now the files are already individually compressed. It might
be a challenge to ship this.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
This commit is contained in:
Michael Tremer
2022-03-22 15:24:49 +00:00
committed by Peter Müller
parent 247e97800d
commit 77e3829dc1
3 changed files with 2722 additions and 2599 deletions
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lfs/linux-firmware
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@@ -70,8 +70,8 @@ $(subst %,%_MD5,$(objects)) :
$(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
@$(PREBUILD)
@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar axf $(DIR_DL)/$(DL_FILE)
mkdir -p /lib/firmware
cd $(DIR_APP) && make install
cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/0001-Add-support-for-compressing-firmware-in-copy-firmwar.patch
cd $(DIR_APP) && make installcompress
# Remove any spaces in filenames
while read -r file; do \