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Masahiro Yamada cb08a02659 kbuild: rpm-pkg: disable kernel-devel package when cross-compiling 
Since commit f1d87664b8 ("kbuild: cross-compile linux-headers package
when possible"), 'make binrpm-pkg' may attempt to cross-compile the
kernel-devel package, but it fails under certain circumstances.

For example, when CONFIG_MODULE_SIG_FORMAT is enabled on openSUSE
Tumbleweed, the following command fails:

  $ make ARCH=arm64 CROSS_COMPILE=aarch64-suse-linux- binrpm-pkg
      [ snip ]
  Rebuilding host programs with aarch64-suse-linux-gcc...
    HOSTCC  /home/masahiro/ref/linux/rpmbuild/BUILDROOT/kernel-6.12.0_rc4-1.aarch64/usr/src/kernels/6.12.0-rc4/scripts/kallsyms
    HOSTCC  /home/masahiro/ref/linux/rpmbuild/BUILDROOT/kernel-6.12.0_rc4-1.aarch64/usr/src/kernels/6.12.0-rc4/scripts/sorttable
    HOSTCC  /home/masahiro/ref/linux/rpmbuild/BUILDROOT/kernel-6.12.0_rc4-1.aarch64/usr/src/kernels/6.12.0-rc4/scripts/asn1_compiler
    HOSTCC  /home/masahiro/ref/linux/rpmbuild/BUILDROOT/kernel-6.12.0_rc4-1.aarch64/usr/src/kernels/6.12.0-rc4/scripts/sign-file
  /home/masahiro/ref/linux/rpmbuild/BUILDROOT/kernel-6.12.0_rc4-1.aarch64/usr/src/kernels/6.12.0-rc4/scripts/sign-file.c:25:10: fatal error: openssl/opensslv.h: No such file or directory
     25 | #include <openssl/opensslv.h>
        |          ^~~~~~~~~~~~~~~~~~~~
  compilation terminated.

I believe this issue is less common on Fedora because the disto's cross-
compilier cannot link user-space programs. Hence, CONFIG_CC_CAN_LINK is
unset.

On Fedora 40, the package information explains this limitation clearly:

  $ dnf info gcc-aarch64-linux-gnu
      [ snip ]
  Description  : Cross-build GNU C compiler.
               :
               : Only building kernels is currently supported.  Support for cross-building
               : user space programs is not currently provided as that would massively multiply
               : the number of packages.

Anyway, cross-compiling RPM packages is somewhat challenging.

This commit disables the kernel-devel package when cross-compiling
because I did not come up with a better solution.

Fixes: f1d87664b8 ("kbuild: cross-compile linux-headers package when possible")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
2024-10-31 21:40:46 +09:00
arch - Explicitly disable the TSC deadline timer when going idle to address 2024-10-20 12:04:32 -07:00
block block-6.12-20241018 2024-10-18 15:53:00 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This push fixes the following issues: 2024-10-16 08:42:54 -07:00
Documentation Char/Misc/IIO fixes for 6.12-rc4 2024-10-20 13:10:44 -07:00
drivers bluetooth pull request for net: 2024-10-20 14:08:17 -07:00
fs Mashed-up update that I sat on too long: 2024-10-19 08:44:10 -07:00
include TTY/Serial driver fixes for 6.12-rc4 2024-10-20 13:03:30 -07:00
init cfi: fix conditions for HAVE_CFI_ICALL_NORMALIZE_INTEGERS 2024-10-13 22:23:13 +02:00
io_uring io_uring/rw: fix wrong NOWAIT check in io_rw_init_file() 2024-10-19 09:25:45 -06:00
ipc struct fd layout change (and conversion to accessor helpers) 2024-09-23 09:35:36 -07:00
kernel - Add PREEMPT_RT maintainers 2024-10-20 11:30:56 -07:00
lib Rust fixes for v6.12 (2nd) 2024-10-19 08:32:47 -07:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm: fix follow_pfnmap API lockdep assert 2024-10-18 09:50:05 -07:00
net bluetooth pull request for net: 2024-10-20 14:08:17 -07:00
rust Driver core fix for 6.12-rc3 2024-10-13 09:10:52 -07:00
samples [tree-wide] finally take no_llseek out 2024-09-27 08:18:43 -07:00
scripts kbuild: rpm-pkg: disable kernel-devel package when cross-compiling 2024-10-31 21:40:46 +09:00
security ipe: fallback to platform keyring also if key in trusted keyring is rejected 2024-10-18 12:14:53 -07:00
sound ALSA: hda/conexant - Use cached pin control for Node 0x1d on HP EliteOne 1000 G2 2024-10-16 10:29:57 +02:00
tools BPF fixes: 2024-10-18 16:27:14 -07:00
usr initramfs: shorten cmd_initfs in usr/Makefile 2024-07-16 01:07:52 +09:00
virt sched/fair: Fix external p->on_rq users 2024-10-14 09:14:35 +02:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Kbuild updates for v6.12 2024-09-24 13:02:06 -07:00
.mailmap mailmap: add an entry for Andy Chiu 2024-10-17 00:28:08 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS CREDITS: sort alphabetically by name 2024-10-09 12:47:19 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Char/Misc/IIO fixes for 6.12-rc4 2024-10-20 13:10:44 -07:00
Makefile Linux 6.12-rc4 2024-10-20 15:19:38 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.