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2021-07-14kconfig / kbuild: Re-sync with Linux 4.20Tom Rini
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@kernel.org> Signed-off-by: Tom Rini <trini@konsulko.com>
2020-03-16kbuild: Re-sync DTC flag logic with v4.17Tom Rini
The way that we have been handling additional DTC warning flags hasn't matched the way the Linux Kernel does. Resync this logic with v4.17. Signed-off-by: Tom Rini <trini@konsulko.com>
2019-03-25scripts/Makefile.extrawarn: Silence more DTC warningsTom Rini
While our "extrawarns" logic has gotten out of sync with upstream Kbuild, for now lets start by bringing in the latest set of DTC_FLAGS from the Linux Kernel 5.0 to match their behavior in silencing warnings from dtc. Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-23scripts/dtc: Update to upstream version v1.4.3Tom Rini
Using the update-dtc-source.sh script from Linux v4.14-rc1 import the portions of dtc that we require. We bring in update-dtc-source.sh and scripts/dtc/Makefile from Linux v4.14-rc1. Rework DTC_FLAGS handling to not require a test. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-05-15kbuild: update DTC warning settings for bus and node/property name checksMasahiro Yamada
Recent commits of DTC introduced new warnings checking PCI and simple buses, unit address formatting, and stricter node and property name checking. Disable the new DTC warnings by default. As before, warnings are enabled with W=*. The strict node and property name checks are a bit subjective, so they are only enabled for W=2. (This policy reflects the commit 8654cb8d0371 of Linux.) Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-03-09kbuild: turn of dtc unit address warnings by defaultMasahiro Yamada
DTC 1.4.2 or later checks DT unit-address without reg property and vice-versa, and generates lots of warnings. Fixing DT files will take for a while. Until then, let's turn off the check unless building with W=*. Introduce a new helper dtc-option to check if the option is supported in order to suppress warnings on older versions. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-19scripts/Makefile* Add SPDX-License-Identifier tagTom Rini
A general best practice for SPDX is that Makefiles should have an identifier, add these as everything else is currently covered. Signed-off-by: Tom Rini <trini@konsulko.com>
2014-11-04kbuild: do not hide clang warnings during build with W=1Masahiro Yamada
These lines originate in Linux; it looks like Linux folks chose to hide bunch of warnings reported by clang rather than fixing C code. In U-boot, warnings are being fixed thanks to Jeroen's great efforts. Let's stop suppressing clang warnings. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-08-21kbuild: move extra gcc checks to scripts/Makefile.extrawarnMasahiro Yamada
This commit was imported from Linux Kernel: commit a86fe353 written by me. W=... provides extra gcc checks. Having such code in scripts/Makefile.build results in the same flags being added to KBUILD_CFLAGS multiple times becuase scripts/Makefile.build is invoked every time Kbuild descends into the subdirectories. Since the top Makefile is already too cluttered, this commit moves all of extra gcc check stuff to a new file scripts/Makefile.extrawarn, which is included from the top Makefile. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>