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[ Upstream commit315da87c0f] Sedat Dilek noticed duplicated flags in DEBUG_CFLAGS when building deb-pkg with CONFIG_DEBUG_INFO. For example, 'make CC=clang bindeb-pkg' reproduces the issue. Kbuild recurses to the top Makefile for some targets such as package builds. With commit121c5d08d5("kbuild: Only add -fno-var-tracking-assignments for old GCC versions") applied, DEBUG_CFLAGS is now reset only when CONFIG_CC_IS_GCC=y. Fix it to reset DEBUG_CFLAGS all the time. Fixes:121c5d08d5("kbuild: Only add -fno-var-tracking-assignments for old GCC versions") Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Reviewed-by: Mark Wielaard <mark@klomp.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.