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Masahiro Yamada 0aa24a79ee kbuild: do not try to parse *.cmd files for objects provided by compiler
Guenter Roeck reported the build breakage for parisc and csky.
I confirmed nios2 and openrisc are broken as well.

The reason is that they borrow libgcc.a from the toolchains.

For example, see this line in arch/parisc/Makefile:

    LIBGCC          := $(shell $(CC) -print-libgcc-file-name)

Some objects in libgcc.a are linked to vmlinux.o, but they do not have
.*.cmd files.

Obviously, there is no EXPORT_SYMBOL in external objects. Ignore them.

(Most of the architectures import library code into the kernel tree.
Perhaps those 4 architectures can do similar, but I do not know how
challenging it is.)

Fixes: f292d875d0 ("modpost: extract symbol versions from *.cmd files")
Link: https://lore.kernel.org/linux-kbuild/20220528224745.GA2501857@roeck-us.net/T/#mac65c20c71c3e272db0350ecfba53fcd8905b0a0
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
2022-05-29 18:36:41 +09:00
arch OpenRISC updates for 5.19 2022-05-26 17:27:49 -07:00
block Page cache changes for 5.19 2022-05-24 19:55:07 -07:00
certs Kbuild updates for v5.19 2022-05-26 12:09:50 -07:00
crypto certs: Factor out the blacklist hash creation 2022-05-23 18:47:49 +03:00
Documentation NFSD 5.19 Release Notes 2022-05-26 20:52:24 -07:00
drivers - Enable DM core bioset's per-cpu bio cache if QUEUE_FLAG_POLL 2022-05-26 21:13:45 -07:00
fs v5.19 pull request 2022-05-26 21:08:40 -07:00
include v5.19 pull request 2022-05-26 21:08:40 -07:00
init Modules updates for v5.19-rc1 2022-05-26 17:13:43 -07:00
ipc fs: allocate inode by using alloc_inode_sb() 2022-03-22 15:57:03 -07:00
kernel Modules updates for v5.19-rc1 2022-05-26 17:13:43 -07:00
lib Yang Shi has improved the behaviour of khugepaged collapsing of readonly 2022-05-26 12:32:41 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm sysctl changes for v5.19-rc1 2022-05-26 16:57:20 -07:00
net v5.19 pull request 2022-05-26 21:08:40 -07:00
samples drm for 5.19-rc1 2022-05-25 16:18:27 -07:00
scripts kbuild: do not try to parse *.cmd files for objects provided by compiler 2022-05-29 18:36:41 +09:00
security linux-kselftest-kunit-5.19-rc1 2022-05-25 11:32:53 -07:00
sound sound updates for 5.19-rc1 2022-05-25 16:55:16 -07:00
tools S390: 2022-05-26 14:20:14 -07:00
usr Kbuild updates for v5.19 2022-05-26 12:09:50 -07:00
virt S390: 2022-05-26 14:20:14 -07:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap Scheduler changes in this cycle were: 2022-05-24 11:11:13 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Modules updates for v5.19-rc1 2022-05-26 17:13:43 -07:00
Makefile Kbuild updates for v5.19 2022-05-26 12:09:50 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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 Restructured Text 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.