Multiple sources are hosted on OpenWrts source server only. The source
URLs to point to the server vary based on different epochs in OpenWrts
history.
Replace all by @OPENWRT which is an "empty" mirror, therefore using the
fallback servers sources.cdn.openwrt.org and sources.openwrt.org.
Signed-off-by: Paul Spooren <mail@aparcar.org>
The license folder is a core part of OpenWrt and all GPL-2.0 licensed.
Use SPDX license tags to allow machines to check licenses.
Signed-off-by: Paul Spooren <mail@aparcar.org>
[rebase, keep some Copyright lines, sharpen commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The majority of our targets provide a default value for the variable
SUPPORTED_DEVICES, which is used in images to check against the
compatible on a running device:
SUPPORTED_DEVICES := $(subst _,$(comma),$(1))
At the moment, this is implemented in the Device/Default block of
the individual targets or even subtargets. However, since we
standardized device names and compatible in the recent past, almost
all targets are following the same scheme now:
device/image name: vendor_model
compatible: vendor,model
The equal redundant definitions are a symptom of this process.
Consequently, this patch moves the definition to image.mk making it
a global default. For the few targets not using the scheme above,
SUPPORTED_DEVICES will be defined to a different value in
Device/Default anyway, overwriting the default. In other words:
This change is supposed to be cosmetic.
This can be used as a global measure to get the current compatible
with: $(firstword $(SUPPORTED_DEVICES))
(Though this is not precisely an achievement of this commit.)
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: CN_SZTL <cnsztl@project-openwrt.eu.org>
/lib/functions.sh was executable for no obvious reason and its
execute property was even checked in package-ipkg.mk just to
source it afterwards.
Remove the execute bit and shebang as this is clearly a library.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Reviewed-by: Philip Prindeville <philipp@redfish-solutions.com>
Signed-off-by: CN_SZTL <cnsztl@project-openwrt.eu.org>
This keeps the configuration, like the size of the cache, and the
statistics intact. Move the removal of the cache directory to the
distclean target, but only delete the .ccache directory inside of our
build tree, as we should not mess with a user-configured external ccache
directory this destructively.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
clang's gcc emulation does the right thing with -print-file-name now,
drop the wrapper
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
`which` utility is not shipped by default for example on recent Arch
Linux and then any steps relying on its presence fails, like for example
following Python3 prereq build check:
$ python3 --version
Python 3.9.1
$ make
/bin/sh: line 1: which: command not found
/bin/sh: line 1: which: command not found
/bin/sh: line 1: which: command not found
...
Checking 'python3'... failed.
...
Fix this by switching to Bash builtin `command` which should provide
same functionality.
Fixes: FS#3525
Signed-off-by: Petr Štetiar <ynezz@true.cz>
With commit 2ca084cc ("build: improve ccache support") these variables
are being set globally and we don't need them for specific targets.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Set CCACHE_DIR to $(TOPDIR)/.ccache and CCACHE_BASEDIR to $(TOPDIR).
This allows to do clean and dirclean. Cache hit rate for test build
after dirclean is ~65%.
If CCACHE is enabled stats are printed out at the end of building process.
CCACHE_DIR config variable allows to override default, which could be useful
when sharing cache with many builds.
cacheclean make target allows to clean the cache.
Changes from v1:
- remove ccache directory using CCACHE_DIR variable
- remove ccache leftovers from sdk and toolchain make files
- introduce CONFIG_CCACHE_DIR variable
- introduce cacheclean make target
Signed-off-by: Roman Yeryomin <roman@advem.lv>
While parsing the nm output, we need to account for the fact that 64-bit kernels
have 64-bit wide addresses. While at it, replace the grep | sed combo with a
single awk invocation and a stronger regex.
Fixes: 2ef0acc5fc "kernel-build: fix
STRIP_KERNEL_EXPORTS for recent kernels"
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
Multiple prereq checks are only required within the build system but not
for the ImageBuilder. These checks are excluded by using ifndef IB.
This commit merges the three ifndef IB blocks together.
Signed-off-by: Paul Spooren <mail@aparcar.org>
Some images are created using different filesystems, most popular
squashfs and ext4. To allow downstream projects to distinguesh between
those, add the `filesystem` information to created json files.
Signed-off-by: Paul Spooren <mail@aparcar.org>
This is a neat project, but offers no benefit to OpenWrt. The initial
reason for it was to be a replacement for libstdcpp as it is smaller
and lacks compatibility for C++98. Unfortunately, compiling several
packages with it results in larger ipk sizes.
While not a member of the packages feed, this will be moved to
packages-abandoned to keep it somewhere.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
It was observed that the MD5 would not change after source files had been
modified, looking deeper into the build process it was discovered that
find_md5 build function makes a list of the files being built and then
passes the list to a summing utility on stdin. The resultant MD5 is of
the file list, not the contents of the files.
The MD5 would change if the ordering of the list changed, or items were
removed or deleted.
The proposed fix is to add the modification time after the filename and
then sort the list to prevent find returning files in a different order
falsely re-triggering a rebuild. The MD5 will now change when a file is
modified or files are added/removed from the list.
Using 'T@' to show time in epoch for timezone independent behaviour.
Signed-off-by: John Beckett <john.beckett@net2edge.com>
Commit f98878e4c1 ("cmake.mk: set C/CXX compiler for host builds as
well") has introduced regression as it didn't taken usage of ccache into
the account so fix it by handling ccache use cases as well.
In order to get this working we need to export HOSTCXX_NOCACHE in
rules.mk as well.
Fixes: f98878e4c1 ("cmake.mk: set C/CXX compiler for host builds as well")
Reported-by: Ansuel Smith <ansuelsmth@gmail.com>
Tested-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Without this, cmake will use whatever CC/CXX is set to, which could be
clang. In that case, at least libjson-c/host will fail to compile.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
It is impossible to locate package that failed the build just from log
once more build is run in parallel (that is more than one make job). The
only way is to scout log files for failed package going back trough log.
This change makes it so error is printed for package that failed every
time.
Signed-off-by: Karel Kočí <karel.koci@nic.cz>
Without this, cmake will use whatever CC/CXX is set to, which could be
clang. In that case, at least libjson-c/host will fail to compile.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Currently it's assumed, that already downloaded tarballs are always
fine, so no checksum checking is performed and the tarball is used even
if it might be corrupted.
From now on, we're going to always check the downloaded tarballs before
considering them valid.
Steps to reproduce:
1. Remove cached tarball
rm dl/libubox-2020-08-06-9e52171d.tar.xz
2. Download valid tarball again
make package/libubox/download
3. Invalidate the tarball
sed -i 's/PKG_MIRROR_HASH:=../PKG_MIRROR_HASH:=ff/' package/libs/libubox/Makefile
4. Now compile with corrupt tarball source
make package/libubox/{clean,compile}
Signed-off-by: Petr Štetiar <ynezz@true.cz>
When setting the option IPK_FILES_CHECKSUMS the build system stores
checksums of all package file as metadata. In combination with pkg_check
this allows to see if a package is broken, e.g. caused by bad flash.
To create those checksums the tool `sha256sum` were used while the rest
of OpenWrt uses `mkhash`, a small & fast implementation of sha256. As
the build system does not check the existence of `sha256sum` and the
stderr output is moved to /dev/null, a situation where the option is
enabled but no actual checksum are created may occur.
Instead of adding `sha256sum` as a requirement, this replaces it with
`mkhash sha256` and adapts the `sed` pipe command to fit spacing.
CC: Xu Wang <xwang1498@gmx.com>
CC: Michal Hrusecky <Michal@Hrusecky.net>
Signed-off-by: Paul Spooren <mail@aparcar.org>
Apple ships a broken make version with the Xcode command line tools.
Homebrew installs make as gmake by default in order to not collide with
Apple's version.
Exit with an error if the broken one is used accidentally
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The source date epoch is the only reproducible date close to the actual
build date. It can be used for tooling like the firmware wizard to show
the image age.
Signed-off-by: Paul Spooren <mail@aparcar.org>
With this commit the `profiles.json` contain both the target specific
`default_packages` as well as the device specific `device_packages` as a
array of strings.
This information is required for downstream projects like the various
web-based interactive firmware generators.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Paul Spooren <mail@aparcar.org>
JSON info files contain machine readable information of built profiles
and resulting images. These files were added in commit 881ed09ee6
("build: create JSON files containing image info").
They are useful for firmware wizards and script checking for
reproducibility.
Currently all JSON files are stored next to the built images, resulting
in up to 168 individual files for the ath79/generic target.
This patch refactors the JSON creation to store individual per image
(not per profile) files in $(BUILD_DIR)/json_info_files and create an
single overview file called `profiles.json` in the target directory.
Storing per image files and not per profile solves the problem of
parallel file writes. If a profiles sysupgrade and factory image are
finished at the same time both processes would write to the same JSON
file, resulting in randomly broken outputs.
Some target like x86/64 do not use the image code yet, resulting in
missing JSON files. If no JSON info files were created, no
`profiles.json` files is created as it would be empty anyway.
As before, this creation is enabled by default only if `BUILDBOT` is set.
Tested via buildroot & ImageBuilder on ath79/generic, imx6 and x86/64.
Signed-off-by: Paul Spooren <mail@aparcar.org>
[json_info_files dir handling in Make, if case refactoring]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Define wildcard patterns for filtering in target/linux/generic/config-filter
Preparation for supporting newer kernels
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Nightly snapshot builds of OpenWrt change their kernels versions
frequently and lose thereby compatibility to kmods from the upstream
target specific packages feed.
To allow opkg to install packages over multiple days a kmod archive is
offered at $target/$subtarget/kmods/$kernelversion and added as a feed
to created snapshot images via a buildbot step[1].
Instead of using a buildstep add the kmod feed directly via
FeedSourcesAppend to be included in the ImageBuilder repositories.conf
as well. This is conditionally only done for SNAPSHOT builds and when
running as BUILDBOT. Releases are unaffected as they don't include
kernel version changes and local builds may use different kernel
versions or magics than available upstream.
This commit allows in a future step to ship ImageBuilders without a
locally stored kmod archive.
Signed-off-by: Paul Spooren <mail@aparcar.org>
This reverts commit 6a56a6eb30 as several
users have reported unbootable systems.
Suggested-by: Roman Kuzmitskii <damex.pp@icloud.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Add procd-ujail and procd-seccomp to DEFAULT_PACKAGES if not building
for space-constraint (FEATURES:=small_flash) targets.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Rather than unconditionally adding busybox and procd to the set of
default packages, add busybox-selinux and procd-selinux in case
CONFIG_SELINUX is set.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
version_abbrev uses $(shell) and the ?= is causing make to run the command
over and over again, causing a significant build slowdown
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The buildroot and SDK both require the compilers (gcc, g++) to be
installed on the host system, however the ImageBuilder uses precompiled
binaries.
This patch changes the prerequirements checks to skip the checking for
the compilers if running as ImageBuilder. A similar change has been
made for libncurses-dev in 4a1a58a3e2.
Signed-off-by: Sven Roederer <devel-sven@geroedel.de>
Acked-by: Paul Spooren <mail@aparcar.org>
Instead of hardcoding 'targeted' policy, evaluate /etc/selinux/config
in rootfs to choose according to which policy files in the rootfs got
to be labeled.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
By installing policycoreutils to host/bin it is also available within
the ImageBuilder and SDK, allowing to correctly label both filesystems
and packages.
Signed-off-by: Paul Spooren <mail@aparcar.org>
There are currently several variants of 'wpad' package but the 'iwinfo'
is included by default only if 'wpad', 'wpad-{basic*,mini}' or 'nas'
packages are included in {DEVICE,DEFAULT}_PACKAGES. Use 'wpad-*'
pattern to include 'iwinfo' with any 'wpad' variant.
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
'setfiles' and others should be installed to $(STAGING_DIR_HOSTPKG)/bin
rather than $(...)/sbin which isn't in PATH.
Also using -Wl,-rpath to set library search location instead of setting
LD_LIBRARY_PATH when calling setfiles in image.mk.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Some bootloaders are really keen on just one special
fdt in a multi-image fit image. This is a problem, because
currently this is fixed to "fdt@1".
This patch introduces a new device variable:
DEVICE_FDT_NUM that allows to specify the right
fdt number.
If the value is absent "1" will be chosen.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
IMAGE_SIZE is widely used in many targets. Declare it in the default template to
clean up redundant code. This also prevents deriving IMAGE_SIZE unintentionally
from the previously defined device.
While at it, remove duplicate KERNEL_SIZE declaration.
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
This file can be subsequently used to resolve symbolic user or group names
to their numeric IDs when packing ipk archives.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Currently the global variable PKG_FILE_MODES is used for all ipkg
creations. This works for Makefiles which output a single package, or
variants of a single package.
But if a Makefile outputs multiple packages that each contain different
files, setting PKG_FILE_MODES causes build failure when any of the files
in the variable do not exist in the folder that is currently being
packaged.
Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>
Adding inline shell invocations in per-target variables causes them to be
executed over and over again, which causes a significant slowdown.
Fix this by evaluating it only once per package directory
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Using fakeroot without passing the paths to libfakeroot.sh and faked
causes havoc. Use the $(FAKEROOT) Make variable which includes them.
Fixes: 353ce2e521 ("build: ipkg-build use fakeroot with PKG_FILE_MODES")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
The variable VERSION_REPO is used by opkg to download package(list)s.
Now that the default installation support encrypted HTTP opkg should
make use of it.
Suggested-by: Petr Štetiar <ynezz@true.cz>
Suggested-by: Baptiste Jonglez <baptiste@bitsofnetworks.org>
Signed-off-by: Paul Spooren <mail@aparcar.org>
Acked-by: Baptiste Jonglez <baptiste@bitsofnetworks.org>
The usage of granular `SOURCE_DATE_EPOCH` for packages is an
incrementing integer which could be useful for downstream tooling,
therefore add it to the packages manifest.
Signed-off-by: Paul Spooren <mail@aparcar.org>
With the new `SOURCE` argument of `get_source_date_epoch` it is possible
to set package timestamps based on actual package changes rather thane
$TOPDIR changes.
This commit adds a new variable PKG_SOURCE_DATE_EPOCH which is used by
the `ipkg` build script. As a fallback the existing SOURCE_DATE_EPOCH is
used or as last resort the current time.
The redundant checks for `.git/` and `.svn/` are removed.
Signed-off-by: Paul Spooren <mail@aparcar.org>
The `ipkg-build` script converts a folder into a `opkg` installable
package. Until now it would use root:root for all packages and try to
preserve file modes.
This has the two drawbacks of packages want to add non-root files or add
SUID files, like the `sudo` package does.
To give more flexibility regarding file modes and avoid init script
hacks, a new variable called `PKG_FILE_MODES`. The variable contains a
list of files modes in the format `path:owner:group:mode`.
An example for the `sudo` package below:
```
PKG_FILE_MODES:=\
/usr/bin/sudo:root:root:4755 \
/etc/sudoers:root:root:0440
```
The `ipkg-build` now runs within a fakeroot environment to set any mode
and directly store it in the resulting `ipk` package archive.
Both options `-o` and `-g` are no longer required due to the introduction
of the more flexible `-m` options, which takes the `PKG_FILE_MODES` as
input.
Lastly the option `-c` is removed as it's unused within the script.
Signed-off-by: Paul Spooren <mail@aparcar.org>
This allows the build process to prepare a squashfs filesystem for use
with SELinux.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[rebase, add commit message]
Signed-off-by: W. Michael Petullo <mike@flyn.org>
CMake provides a user package registry (stored in ~/.cmake/packages) and
a system package registry (not available on non-Windows platforms).
The "export(PACKAGE)" command may store information in the user package
registry, and the "find_package()" command may search both user and
system package registries for information.
This sets various variables to disable the use of these package
registries (both saving and retrieval of package information).
This also sets deprecated variables that perform similar functions, in
case external toolchains include older versions of CMake.
Signed-off-by: Jeffery To <jeffery.to@gmail.com>
Add package which provides size optimized wpad with support for just
WPA-PSK, SAE (WPA3-Personal), 802.11r and 802.11w.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
[adapt to recent changes, add dependency for WPA_WOLFSSL config]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The README file is displayed on "make help", but updating the
command has been overlooked during the README -> README.md
rename.
Fix it.
Fixes: d0113711a3 ("README: port to 21st century")
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Fix shellcheck SC2230
> which is non-standard. Use builtin 'command -v' instead.
Using `command -v` is POSIX compliant while `which` is not. Also to
mention, `command -v` is a shell builtin whereas `which` is a separate
busybox applet.
Once applied to everything concerning OpenWrt we can disable the busybox
feature `which` and save 3.8kB.
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
Signed-off-by: Paul Spooren <mail@aparcar.org>
[also replace cases in zram-swap]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Instead of just printing a warning that an image is too big, also
print both actual size and limit in the string:
WARNING: Image file somename.bin is too big: 2096101 > 1048576
Since the kernel size is checked via the same function (if
KERNEL_SIZE is specified), this will also apply to the kernel
image size check.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The recipe check-kernel-size is not used in the entire tree. Instead,
we already check the size of the kernel image in Device/Build/kernel
in image.mk via check-size function if KERNEL_SIZE is defined.
Therefore, drop the function. Using it would be redundant anyway.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
In most cases check-size is used with IMAGE_SIZE and vice versa. Let check-size
use IMAGE_SIZE by default.
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
Instead of using xargs to pass a huge number of files to
script/ipkg-remove, which will usually pick only one, use a more
restrictive wildcard so that, currently, at the most 325 files are
examined, instead of up to over 2,300. The 325-file package is python,
which is picking up python3* ipks. It is about to be removed.
Runner-up is ddns-scripts with 7 files.
This makes a second run of make package/luci/compile go from
real 16.40s; user 17.42s; sys 2.73s
to
real 10.71s; user 9.51s; sys 1.27s
There is a caveat though: if one were to remove the ABI_VERSION of a
package that ends in a digit [0-9], then the old package ipk will not be
removed from the bin directory by make package/abc2/clean.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
The wildcard call to clean up luci package (luci*) can pick up over
2,300 files when the full tree is built. Running make package/luci/clean
or a second run of make package/luci/compile would fail with an
'Argument list too long' error.
To avoid that, a maybe_use_xargs function was created that runs the
command straight as usual if the number of arguments is < 512, or saves
the list in a temporary file and feeds it to xargs otherwise.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Instead of calling $(wildcard) to check if the removal list is empty,
then calling it again to actually remove the files, define a function so
that the arguments are expanded only once when it gets called.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
f4f8f4a180 broke ffmpeg compilation with x86
The reason is that ffmpeg's x86 assembly requires at least MMX, which the
pentium CPU_TYPE was preventing.
Fixes ffmpeg compilation on x86_legacy and x86_geode.
Ref: https://github.com/openwrt/openwrt/pull/3061
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Add support for make target nconfig (ncurses)
Reviewed-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Signed-off-by: Sergio E. Nemirowski <sergio@outerface.net>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Fixes:
- CVE-2020-10757
The "mtd: rawnand: Pass a nand_chip object to nand_release()" commit was
backported which needed some adaptations to other code.
Run tested: ath79
Build tested: ath79
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Lets add GCC 10 detection to the build system as distributions like Fedora 32 have started shipping with it.
Some tools like mtd-utils need work to compile under GCC10, but that will be next step.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Removes the standalone implementation of stack smashing protection
in gcc's libssp in favour of the native implementation available
in glibc and uclibc. Musl libc already uses its native ssp, so this
patch does not affect musl-based toolchains.
Stack smashing protection configuration options are now uniform
across all supported libc variants.
This also makes kernel-level stack smashing protection available
for x86_64 and i386 builds using non-musl libc.
Signed-off-by: Ian Cooper <iancooper@hotmail.com>
The buildroot and SDK both require `libncurses-dev` to be installed on
the system, however the ImageBuilder uses precompiled binaries.
This patch changes the prerequirements checks to skip the
`libncurses-dev` part if running as ImageBuilder.
Signed-off-by: Paul Spooren <mail@aparcar.org>
Required for installation of autoconf:
make[5]: Entering directory `/openwrt/build_dir/host/autoconf-2.69'
Making all in bin
make[6]: Entering directory `/openwrt/build_dir/host/autoconf-2.69/bin'
autom4te_perllibdir='..'/lib AUTOM4TE_CFG='../lib/autom4te.cfg'
../bin/autom4te -B '..'/lib -B '..'/lib --language M4sh --cache
'' --melt ./autoconf.as -o autoconf.in
Can't locate Data/Dumper.pm in @INC (@INC contains: ../lib
/usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl
/usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at
../lib/Autom4te/C4che.pm line 33.
BEGIN failed--compilation aborted at ../lib/Autom4te/C4che.pm line 33.
Compilation failed in require at ../bin/autom4te line 40.
BEGIN failed--compilation aborted at ../bin/autom4te line 40.
make[6]: *** [autoconf.in] Error 2
Signed-off-by: Rosen Penev <rosenp@gmail.com>
zstd with its default settings (compression level -3) compresses better
than bzip2 -9 (which is the default setting), and is an order of magnitude
faster.
I made the following measurements for the most common compression tools
(all standard Debian Buster versions, default flags unless noted
otherwise), using the debug information of a large x86-64 kernel with
ALL_KMODS:
* kernel-debug.tar: 376M
* kernel-debug.tar.gz: 101M, compressed in ~12s
* kernel-debug.tar.bz2: 91M, compressed in ~15s
* kernel-debug.tar.xz: 57M, compressed in ~101s
* kernel-debug.tar.zst: 86M, compressed in ~1s
With zstd, there is still some room for improvement by increasing the
compression, but the slight increase in compression ratio
(22.83% -> 19.46%) does not justify the significant increase in
compression time (about 5 times on my machine) in my opinion.
Note that multithreaded compression (-T argument) does not affect
reproducibility with zstd.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
