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Masahiro Yamada d0736af811 kbuild: generate Module.symvers only when vmlinux exists [ Upstream commit `69bc8d386a` ] The external module build shows the following warning if Module.symvers is missing in the kernel tree. WARNING: Symbol version dump "Module.symvers" is missing. Modules may not have dependencies or modversions. I think this is an important heads-up because the resulting modules may not work as expected. This happens when you did not build the entire kernel tree, for example, you might have prepared the minimal setups for external modules by 'make defconfig && make modules_preapre'. A problem is that 'make modules' creates Module.symvers even without vmlinux. In this case, that warning is suppressed since Module.symvers already exists in spite of its incomplete content. The incomplete (i.e. invalid) Module.symvers should not be created. This commit changes the second pass of modpost to dump symbols into modules-only.symvers. The final Module.symvers is created by concatenating vmlinux.symvers and modules-only.symvers if both exist. Module.symvers is supposed to collect symbols from both vmlinux and modules. It might be a bit confusing, and I am not quite sure if it is an official interface, but presumably it is difficult to rename it because some tools (e.g. kmod) parse it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-19 10:12:59 +02:00
Documentation	kbuild: generate Module.symvers only when vmlinux exists	2021-05-19 10:12:59 +02:00
LICENSES	…
arch	powerpc/iommu: Annotate nested lock for lockdep	2021-05-19 10:12:58 +02:00
block	…
certs	…
crypto	…
drivers	net: ethernet: mtk_eth_soc: fix RX VLAN offload	2021-05-19 10:12:59 +02:00
fs	…
include	…
init	…
ipc	…
kernel	…
lib	…
mm	…
net	…
samples	…
scripts	kbuild: generate Module.symvers only when vmlinux exists	2021-05-19 10:12:59 +02:00
security	…
sound	…
tools	selftests: mlxsw: Fix mausezahn invocation in ERSPAN scale test	2021-05-19 10:12:59 +02:00
usr	…
virt	…
.clang-format	…
.cocciconfig	…
.get_maintainer.ignore	…
.gitattributes	…
.gitignore	kbuild: generate Module.symvers only when vmlinux exists	2021-05-19 10:12:59 +02:00
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Makefile	kbuild: generate Module.symvers only when vmlinux exists	2021-05-19 10:12:59 +02:00
README	…

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 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.