[PATCH] kconfig / kbuild: Re-sync with Linux 4.20

[Tom Rini]

On Thu, Jun 17, 2021 at 06:07:25PM -0400, Tom Rini wrote:

> Align Kconfig and Kbuild logic to Linux 4.20 release with minimal impact
> on files outside of this scope.
> 
> Our previous Kconfig sync was done by commit 587e4a429698 ("kconfig /
> kbuild: Re-sync with Linux 4.19").
> 
> As part of this re-sync, a few related changes from previous Linux
> releases were found to have been missed and merged in, and are not in
> the following list.
> 
> The imported Linux commits are:
> 
> [From prior to v4.19]
> b1e0d8b70fa3 kbuild: Fix gcc -x syntax
> a4353898980c kconfig: add CC_IS_GCC and GCC_VERSION
> 469cb7376c06 kconfig: add CC_IS_CLANG and CLANG_VERSION
> 
> [From v4.19 to v4.20]
> 487c7c7702ab kbuild: prefix Makefile.dtbinst path with $(srctree) unconditionally
> 0d91bf584fe5 kbuild: remove old check for CFLAGS use
> 25815cf5ffec kbuild: hide most of targets when running config or mixed targets
> 00d78ab2ba75 kbuild: remove dead code in cmd_files calculation in top Makefile
> 23066c3f4e21 Compiler Attributes: enable -Wstringop-truncation on W=1 (gcc >= 8)
> 37c8a5fafa3b kbuild: consolidate Devicetree dtb build rules
> 80463f1b7bf9 kbuild: add --include-dir flag only for out-of-tree build
> 77ec0c20c7e0 kbuild: remove VERSION and PATCHLEVEL from $(objtree)/Makefile
> 74bc0c09b2da kbuild: remove user ID check in scripts/mkmakefile
> 4fd61277f662 kbuild: do not pass $(objtree) to scripts/mkmakefile
> 80d0dda3a4e5 kbuild: simplify command line creation in scripts/mkmakefile
> fb073a4b473e kbuild: add -Wno-pointer-sign flag unconditionally
> 9df3e7a7d7d6 kbuild: add -Wno-unused-but-set-variable flag unconditionally
> 69ea912fda74 kbuild: remove unneeded link_multi_deps
> 7d0ea2524202 kbuild: use 'else ifeq' for checksrc to improve readability
> 04c459d20448 kconfig: remove oldnoconfig target
> 0085b4191f3e kconfig: remove silentoldconfig target
> 3f80babd9ca4 kbuild: remove unused cc-fullversion variable
> 2cd3faf87d2d merge_config.sh: Allow to define config prefix
> 076f421da5d4 kbuild: replace cc-name test with CONFIG_CC_IS_CLANG
> 6bbe4385d035 kconfig: merge_config: avoid false positive matches from comment lines
> 
> [From post v4.20]
> 885480b08469 Makefile: Move -Wno-unused-but-set-variable out of GCC only block
> 
> There are a number of changes related to additional warnings as well as
> being able to drop cc-name entirely that have been omitted for now as
> additional work is required first.
> 
> Cc: Masahiro Yamada <masahiroy at kernel.org>
> Signed-off-by: Tom Rini <trini at konsulko.com>

Applied to u-boot/master, thanks!

-- 
Tom
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