kernel/linux.git/scripts/kconfig, branch master

Merge tag 'kbuild-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

2026-04-14T16:18:40+00:00

Pull Kbuild/Kconfig updates from Nicolas Schier: "Kbuild: - reject unexpected values for LLVM= - uapi: remove usage of toolchain headers - switch from '-fms-extensions' to '-fms-anonymous-structs' when available (currently: clang >= 23.0.0) - reduce the number of compiler-generated suffixes for clang thin-lto build - reduce output spam ("GEN Makefile") when building out of tree - improve portability for testing headers - also test UAPI headers against C++ compilers - drop build ID architecture allow-list in vdso_install - only run checksyscalls when necessary - update the debug information notes in reproducible-builds.rst - expand inlining hints with -fdiagnostics-show-inlining-chain Kconfig: - forbid multiple entries with the same symbol in a choice - error out on duplicated kconfig inclusion" * tag 'kbuild-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (35 commits) kbuild: expand inlining hints with -fdiagnostics-show-inlining-chain kconfig: forbid multiple entries with the same symbol in a choice Documentation: kbuild: Update the debug information notes in reproducible-builds.rst checksyscalls: move instance functionality into generic code checksyscalls: only run when necessary checksyscalls: fail on all intermediate errors checksyscalls: move path to reference table to a variable kbuild: vdso_install: drop build ID architecture allow-list kbuild: vdso_install: gracefully handle images without build ID kbuild: vdso_install: hide readelf warnings kbuild: vdso_install: split out the readelf invocation kbuild: uapi: also test UAPI headers against C++ compilers kbuild: uapi: provide a C++ compatible dummy definition of NULL kbuild: uapi: handle UML in architecture-specific exclusion lists kbuild: uapi: move all include path flags together kbuild: uapi: move some compiler arguments out of the command definition check-uapi: use dummy libc includes check-uapi: honor ${CROSS_COMPILE} setting check-uapi: link into shared objects kbuild: reduce output spam when building out of tree ...

kconfig: forbid multiple entries with the same symbol in a choice

2026-04-05T07:21:33+00:00

Commit 6a859f1a19d1 ("powerpc: unify two CONFIG_POWERPC64_CPU entries in the same choice block") removed the only occurrence of this tricky use case. Disallow this pattern in choice_check_sanity() and revert commit 4d46b5b623e0 ("kconfig: fix infinite loop in sym_calc_choice()"). Signed-off-by: Masahiro Yamada Reviewed-by: Nathan Chancellor Link: https://patch.msgid.link/20260330115736.1559962-1-masahiroy@kernel.org Reviewed-by: Nicolas Schier Signed-off-by: Nicolas Schier

scripts: kconfig: merge_config.sh: fix indentation

2026-03-11T07:38:06+00:00

Replace spaces with tabs for consistency with the rest of the script. Fixes: 5fa9b82cbcfc5 ("scripts: kconfig: merge_config.sh: refactor from shell/sed/grep to awk") Signed-off-by: Daniel Gomez Link: https://patch.msgid.link/20260310-fixes-merge-config-v1-2-beaeeaded6bd@samsung.com Signed-off-by: Nathan Chancellor

scripts: kconfig: merge_config.sh: pass output file as awk variable

2026-03-11T07:37:50+00:00

The refactoring commit 5fa9b82cbcfc5 ("scripts: kconfig: merge_config.sh: refactor from shell/sed/grep to awk") passes $TMP_FILE.new as ARGV[3] to awk, using it as both an output destination and an input file argument. When the base file is empty, nothing is written to ARGV[3] during processing, so awk fails trying to open it for reading: awk: cmd. line:52: fatal: cannot open file `./.tmp.config.grcQin34jb.new' for reading: No such file or directory mv: cannot stat './.tmp.config.grcQin34jb.new': No such file or directory Pass the output path via -v outfile instead and drop the FILENAME == ARGV[3] { nextfile }. Fixes: 5fa9b82cbcfc5 ("scripts: kconfig: merge_config.sh: refactor from shell/sed/grep to awk") Signed-off-by: Daniel Gomez Link: https://patch.msgid.link/20260310-fixes-merge-config-v1-1-beaeeaded6bd@samsung.com Signed-off-by: Nathan Chancellor

scripts: kconfig: merge_config.sh: fix unexpected operator warning

2026-03-09T20:43:10+00:00

Fix a warning for: $ ./scripts/kconfig/merge_config.sh .config extra.config Using .config as base Merging extra.config ./scripts/kconfig/merge_config.sh: 384: [: false: unexpected operator The shellcheck report is also attached: if [ "$STRICT" == "true" ] && [ "$STRICT_MODE_VIOLATED" == "true" ]; then ^-- SC3014 (warning): In POSIX sh, == in place of = is undefined. ^-- SC3014 (warning): In POSIX sh, == in place of = is undefined. Fixes: dfc97e1c5da5 ("scripts: kconfig: merge_config.sh: use awk in checks too") Signed-off-by: Weizhao Ouyang Reviewed-by: Mikko Rapeli Link: https://patch.msgid.link/20260309121505.40454-1-o451686892@gmail.com Signed-off-by: Nathan Chancellor

kconfig: Error out on duplicated kconfig inclusion

2026-02-27T08:26:58+00:00

Let kconfig exit with error on duplicated Kconfig file inclusion. Repeated inclusion of Kbuild files are considered bad-practise with regard to maintenance; and Kconfig language is rich enough that there should be no need for that. If repeated inclusion of Kconfig files is detected, error out with messages like: Kconfig.inc1:4: error: repeated inclusion of Kconfig.inc3 Kconfig.inc2:3: note: location of first inclusion of Kconfig.inc3 While commit f094f8a1b273 ("kconfig: allow multiple inclusion of the same file") introduced detection of recursive inclusions of Kconfig files, it explicitly allowed repeated inclusions, unfortunately w/o reasoning. Reported-by: Linus Torvalds Closes: https://lore.kernel.org/all/CAHk-=wj03hLzK2D=+OYmjgcmGM+XYymp8GyaEs=C0=rXG2nb7w@mail.gmail.com/ Reviewed-by: Nathan Chancellor Tested-by: Nathan Chancellor Link: https://patch.msgid.link/20260220-kconfig-error-out-on-duplicated-inclusion-v1-1-be78aa241a53@kernel.org Signed-off-by: Nicolas Schier

Merge tag 'kbuild-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

2026-02-11T21:40:35+00:00

Pull Kbuild/Kconfig updates from Nathan Chancellor: "Kbuild: - Drop '*_probe' pattern from modpost section check allowlist, which hid legitimate warnings (Johan Hovold) - Disable -Wtype-limits altogether, instead of enabling at W=2 (Vincent Mailhol) - Improve UAPI testing to skip testing headers that require a libc when CONFIG_CC_CAN_LINK is not set, opening up testing of headers with no libc dependencies to more environments (Thomas Weißschuh) - Update gendwarfksyms documentation with required dependencies (Jihan LIN) - Reject invalid LLVM= values to avoid unintentionally falling back to system toolchain (Thomas Weißschuh) - Add a script to help run the kernel build process in a container for consistent environments and testing (Guillaume Tucker) - Simplify kallsyms by getting rid of the relative base (Ard Biesheuvel) - Performance and usability improvements to scripts/make_fit.py (Simon Glass) - Minor various clean ups and fixes Kconfig: - Move XPM icons to individual files, clearing up GTK deprecation warnings (Rostislav Krasny) - Support depends on FOO if BAR as syntactic sugar for depends on FOO || !BAR (Nicolas Pitre, Graham Roff) - Refactor merge_config.sh to use awk over shell/sed/grep, dramatically speeding up processing large number of config fragments (Anders Roxell, Mikko Rapeli)" * tag 'kbuild-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (39 commits) kbuild: remove dependency of run-command on config scripts/make_fit: Compress dtbs in parallel scripts/make_fit: Support a few more parallel compressors kbuild: Support a FIT_EXTRA_ARGS environment variable scripts/make_fit: Move dtb processing into a function scripts/make_fit: Support an initial ramdisk scripts/make_fit: Speed up operation rust: kconfig: Don't require RUST_IS_AVAILABLE for rustc-option MAINTAINERS: Add scripts/install.sh into Kbuild entry modpost: Amend ppc64 save/restfpr symnames for -Os build MIPS: tools: relocs: Ship a definition of R_MIPS_PC32 streamline_config.pl: remove superfluous exclamation mark kbuild: dummy-tools: Add python3 scripts: kconfig: merge_config.sh: warn on duplicate input files scripts: kconfig: merge_config.sh: use awk in checks too scripts: kconfig: merge_config.sh: refactor from shell/sed/grep to awk kallsyms: Get rid of kallsyms relative base mips: Add support for PC32 relocations in vmlinux Documentation: dev-tools: add container.rst page scripts: add tool to run containerized builds ...

streamline_config.pl: remove superfluous exclamation mark

2026-02-03T04:54:20+00:00

In order to make the output cleaner and more consistent with other scripts. Signed-off-by: Diego Viola Link: https://patch.msgid.link/20260202054541.17399-1-diego.viola@gmail.com Signed-off-by: Nathan Chancellor

scripts: kconfig: merge_config.sh: warn on duplicate input files

2026-01-22T22:58:45+00:00

External scripts like yocto kernel scc may provide same input config fragment multiple times. This may be a bug since processing same fragments multiple times can be time consuming. Signed-off-by: Mikko Rapeli Link: https://patch.msgid.link/20260122105751.2186609-3-mikko.rapeli@linaro.org Signed-off-by: Nathan Chancellor

scripts: kconfig: merge_config.sh: use awk in checks too

2026-01-22T22:58:27+00:00

Converting from shell/sed/grep loop to awk improves runtime checks of Yocto genericarm64 kernel config from 20 seconds to under 1 second. The checks catch this kind of issues: WARNING: CONFIG_BLK_DEV_DM differs: Requested value: CONFIG_BLK_DEV_DM=y Actual value: CONFIG_BLK_DEV_DM=m WARNING: CONFIG_SECURITY_NETWORK differs: Requested value: CONFIG_SECURITY_NETWORK=n Actual value: CONFIG_SECURITY_NETWORK=y WARNING: Value requested for CONFIG_ARM64_BTI_KERNEL not in final .config Requested value: CONFIG_ARM64_BTI_KERNEL=y Actual value: Signed-off-by: Mikko Rapeli Link: https://patch.msgid.link/20260122105751.2186609-2-mikko.rapeli@linaro.org Signed-off-by: Nathan Chancellor