When building UML this showed up as of late (2022-09-01):
| Makefile:1335: *** Headers not exportable for UML. Stop.
This message popped up because of an upstream patch that
fixed this error not showing up sooner. For more information see:
<https://lore.kernel.org/lkml/20220901011252.550830-1-masahiroy@kernel.org/T/>
Now, I don't think we can just skip the kernel headers.
Some userspace applications are going to need these. So,
The next best alternative I can think of, is to go with
the headers by the host arch the UML is compiled for.
(Technically, ARCH= should be safe for all other targets
as well... But let's not poke a hornet's nest)
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Make sure the timestamp of the root directory of the initramfs is set
to SOURCE_DATE_EPOCH as well.
Fixes: 29d7461d11 ("kernel: set options to make external initramfs reproducible")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Make sure xz uses at least 2 threads so compression always runs in
multi-threaded mode as the resulting file in single-threaded mode
differs.
Fixes: 29d7461d11 ("kernel: set options to make external initramfs reproducible")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
CONFIG_EXTERNAL_CPIO is a string variable, hence testing for 'y'
doesn't make much sense here.
Fixes: 330bd380e8 ("image: allow building FIT and uImage with ramdisk")
Reported-by: Huangbin Zhan <zhanhb88@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
The $(LINUX_DIR)/.config timesptamp changes between runs of
make target/compile and make target/install (which builds the image).
Kernel-dependent packages and out of tree modules are built in between
those runs, and they check the .config timestamp to decide if they need
to be rebuilt.
Save the target/compile .config to use its timestamp if the file does
not change between runs. That way the subsequent kernel packages are
not unnecessarily rebuilt when you run 'make' back to back.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
This fixes a regression introduced with commit
5ed1e5140a ("build: build kernel image
before building modules/packages").
Before this commit the make target would always include "modules",
resulting in a MODPOST and a complete Module.symvers file. Since this
commit a MODPOST of the kernel modules is not guaranteed for kernels <
5.10. This results in some broken SDKs in which external packages that
depend on exported symbols from kernel modules fail to compile.
Adding "modules" back to the calls to the CompileImage defines fixes the
regression. For kernels > 5.10 this is not needed, but it doesn't cause
any harm either.
Tested with kernels 5.4.x and 5.10.x.
Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>
Use an 'if' so the absence of $(LINUX_DIR)/user_headers doesn't make the
line evaluate to false and cause the build to fail.
Signed-off-by: Matt Merhar <mattmerhar@protonmail.com>
Before this commit, it was assumed that mkhash is in the PATH. While
this was fine for the normal build workflow, this led to some issues if
make TOPDIR="$(pwd)" -C "$pkgdir" compile
was called manually. In most of the cases, I just saw warnings like this:
make: Entering directory '/home/.../package/gluon-status-page'
bash: line 1: mkhash: command not found
bash: line 1: mkhash: command not found
bash: line 1: mkhash: command not found
bash: line 1: mkhash: command not found
bash: line 1: mkhash: command not found
bash: line 1: mkhash: command not found
bash: line 1: mkhash: command not found
bash: line 1: mkhash: command not found
[...]
While these were only warnings and the package still compiled sucessfully,
I also observed that some package even fail to build because of this.
After applying this commit, the variable $(MKHASH) is introduced. This
variable points to $(STAGING_DIR_HOST)/bin/mkhash, which is always the
correct path.
Signed-off-by: Leonardo Mörlein <me@irrelefant.net>
Instead of embedding the initrd cpio archive into the kernel, allow
for having an external ramdisk added to the FIT or uImage.
This is useful to overcome kernel size limitations present in many
stock bootloaders, as the ramdisk is then loaded seperately and doesn't
add to the kernel size. Hence we can have larger ramdisks to host ie.
installers with all binaries to flash included (or a web-based
firmware selector).
In terms of performance and total size the differences are neglectible.
Signed-off-by: Daniel Golle <daniel@makrotopia.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>
Linux 5.9 introduces support for ZSTD ramdisk and initrd compression,
make sure we enable/disable the relevant options when building an
initramfs enabled kernel.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
When we use an external kernel tree which may not have been fully
cleaned, there may be user_headers left which do not match the target
architecture, leading to build failures for packages that do an explicit
inclusion of user_headers (such as iproute2 or iptables). Make sure we
delete them while preparing the directory.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
On non-GNU systems, zcat often does not handle gzip decompression.
Use gzip -dc like the regular unpack command
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This is a follow up of 8cb13f4e6d which sets the right timestamp for the
/init file in initramfs. The previous patch doesn't cover it as the
files appear to come from a later step during compilation.
CC: Alexander Couzens <lynxis@fe80.eu>
Signed-off-by: Paul Spooren <mail@aparcar.org>
They are no longer stored in the "testing" subdirectory and are not
available as .tar.xz archives. If -rc is detected download it from the
git.kernel.org and use .tar.gz.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
In commit fce35bce0f ("config: support new symbol intro'd in kernel
4.12")
I forgot to remove the initial debug test line.
This clearly is wrong as the same symbol is defined conditionally in the
line below as it should be.
I looked over it as I just checked if the symbol was present now upon
testing it.
Fixes: fce35bce0f ("config: support new symbol intro'd in kernel
4.12")
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Symbol CONFIG_INITRAMFS_FORCE allows to ignore the value passed by the
bootloader.
By default, all symbols containing INITRAMFS are wiped from the final
config and then re-added conditionally.
Add support for this symbol, as the build will stop otherwise
questioning the user about this option:
* Restart config...
*
*
* General setup
*
Cross-compiler tool prefix (CROSS_COMPILE) []
Compile also drivers which will not load (COMPILE_TEST) [N/y/?] n
...
Initial RAM filesystem and RAM disk (initramfs/initrd) support
(BLK_DEV_INITRD) [Y/n/?] y
Initramfs source file(s) (INITRAMFS_SOURCE) []
Ignore the initramfs passed by the bootloader (INITRAMFS_FORCE)
[N/y/?] (NEW)
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
This allows packages to use kernel make options without the forced
-C $(LINUX_DIR). It also makes it more clear that it to be called from
kernel module packages directly.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
In case we use external and/or git cloned kernels, let the kernel
determine the appropriate KERNELRELEASE. We cannot used
LINUX_UNAME_VERSION because that one gets determined at a later time,
when the kernel is already built proper.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This reverts commit 0df2c6563a since it
gets in the way of identifying properly which kernel we are running.
This is particularly important if LEDE is using external kernels/git
cloned kernels. We want to make sure we only load modules from that
specific kernel.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Keeping it in base-files was resulting in adding it to the base-files
package. This file is meant to be included manually for initramfs
images only.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
KERNELRELEASE contains a $(shell) call which is evaluated over and over
again.
The call to checksyscalls.sh is unnecessary for LEDE and also takes a
few seconds to complete.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Utilize the existing git download logic from include/download.mk and migrate
the kernel download over to it. This avoids repeatedly cloning kernel sources
after a make target/linux/clean for instance.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name> [fix build error]
When the kernel build picks up a localversion file in the source tree,
that string is unconditionally appended to LOCALVERSION and affects the
uname string.
Make sure to delete any such file.
Signed-off-by: Josua Mayer <josua.mayer97@gmail.com>
When building the kernel from a git repository, the kernel build appends
either a + or a short commit hash to localversion.
This behaviour can be prevented by passing the empty LOCALVERSION variable
to make.
Signed-off-by: Josua Mayer <josua.mayer97@gmail.com>
Similar how we fix the file times in the filesystems, fix the build time
of the kernel, and make the build number static. This should allow the
kernel build to be reproducable when combined with setting the
KERNEL_BUILD_USER and _DOMAIN in case of different machines.
The reproducability only applies to non-initramfs kernels, those still
require additional changes.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
This reverts r48591, users needing NFS root will know how to configure
their platform and kernel command-line appropriately.
Reported-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 48689
It was enabled ages ago when it was added.
It still saves about 10k after LZMA, so let's enable it again.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48680
Replace the configured root device with a NFS root device and automatic
IP configuration for booting over NFS.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 48591
These allow the generated kernel's build metadata to be defined explicitly.
This metadata is reported, eg, at boot time and in `uname -a` on running
systems. If the variables aren't configured, the current build system username
and hostname are used as normal.
The motivation for this option is to achive reproducible (bit-for-bit
identical) kernel builds of official openwrt releases.
Signed-off-by: bryan newbold <bnewbold@robocracy.org>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48541
This change adds support for specifying a build ID for kernel modules.
This is done by setting PKG_BUILD_ID to a hexadecimal string, which will
then be passed to the kernel linker. In addition, when this flag is set,
the build ID debug symbol (.note.gnu.build-id) will not be stripped from
the kernel module. This symbol is exported in sysfs by the kernel (if
the kernel is compiled with CONFIG_KALLSYMS) and so can be used to
uniquely identify a version of a kernel module in a running kernel. This
is useful for keeping track of different versions of a module when doing
experiments and development.
Modules that specify the build ID will be ~100 bytes larger (depending
on the length of the build ID specified). There is no size difference
for kernel modules that do not set this variable.
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
SVN-Revision: 47290
