[PATCH v4] kconfig: add kconfig-sym-check static checker

[PATCH v4] kconfig: add kconfig-sym-check static checker

[Andrew Jones]

Add 'make kconfig-sym-check', a static checker that finds Kconfig
symbols referenced in expressions (select, depends on, default, etc.)
but never defined via config/menuconfig anywhere in the tree. New
dangling symbols are reported as errors (exit 1) unless they are
listed in an exclusion file, e.g.

 KCONFIG_SYM_CHECK_EXCLUDES=sym-check-excludes make kconfig-sym-check

The exclusion file lists one symbol per line; blank lines and lines
starting with '#' are ignored.

The checker also warns about uppercase N/Y/M used as tristate literal
values following the same logic as checkpatch.

This new static checker is the script used for [1] with a few
improvements to avoid some false positives.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=216748 [1]
Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Julian Braha <julianbraha@gmail.com>
---

Note, v1 was based on next-20260508 and this checker found 14 dangling
symbols on that base. v4 is based on next-20260526 and there are now 15.
EZX_PCAP has recently emerged as a new dangling symbol after commit
b12d1da45f12 ("mfd: ezx-pcap: Remove unused driver") was merged.

v4:
  - improved stripping of $(macro) expansions [Sashiko]
  - improved failure when run without srctree parameter
  - Added Julian's t-b

v3:
  - Filter out scripts/kconfig/tests Kconfig files since they may
    be wrong on purpose and indeed there is a 'config Y' in there
    which would mask improper use of 'Y'. [Julian and Randy]
  - Fixed breakage introduced in v2 when attempting to be too
    clever...
  - More changes from another sashiko review which required the
    Perl to get even uglier. So ugly that I enlisted Claude to
    help generate it.
  - Added a sentence to the commit message to describe the excludes
    file format.

v2:
  - Added Andy's and Randy's tags
  - Accept srctree as first argument so the Makefile can drop 'cd $(srctree)' [Nathan]
  - Replace git ls-files with git+find fallback [Nathan and Andy]
  - Changes thanks to sashiko's review
    - strip quoted strings before inline comments to avoid '#' inside a string
    - use [^)]* instead of .* in macro strip regex to avoid greedy match
      eating tokens between adjacent $(macro) expansions

 Makefile                             |  23 +++--
 scripts/kconfig/kconfig-sym-check.pl | 132 +++++++++++++++++++++++++++
 2 files changed, 146 insertions(+), 9 deletions(-)
 create mode 100755 scripts/kconfig/kconfig-sym-check.pl

diff --git a/Makefile b/Makefile
index d59f703f9797..60c30116b95e 100644
--- a/Makefile
+++ b/Makefile
@@ -293,6 +293,7 @@ version_h := include/generated/uapi/linux/version.h
 clean-targets := %clean mrproper cleandocs
 no-dot-config-targets := $(clean-targets) \
 			 cscope gtags TAGS tags help% %docs check% coccicheck \
+			 kconfig-sym-check \
 			 $(version_h) headers headers_% archheaders archscripts \
 			 %asm-generic kernelversion %src-pkg dt_binding_check \
 			 outputmakefile rustavailable rustfmt rustfmtcheck \
@@ -1821,14 +1822,15 @@ help:
 	 echo  '                    (default: $(INSTALL_HDR_PATH))'; \
 	 echo  ''
 	@echo  'Static analysers:'
-	@echo  '  checkstack      - Generate a list of stack hogs and consider all functions'
-	@echo  '                    with a stack size larger than MINSTACKSIZE (default: 100)'
-	@echo  '  versioncheck    - Sanity check on version.h usage'
-	@echo  '  includecheck    - Check for duplicate included header files'
-	@echo  '  headerdep       - Detect inclusion cycles in headers'
-	@echo  '  coccicheck      - Check with Coccinelle'
-	@echo  '  clang-analyzer  - Check with clang static analyzer'
-	@echo  '  clang-tidy      - Check with clang-tidy'
+	@echo  '  checkstack        - Generate a list of stack hogs and consider all functions'
+	@echo  '                      with a stack size larger than MINSTACKSIZE (default: 100)'
+	@echo  '  versioncheck      - Sanity check on version.h usage'
+	@echo  '  includecheck      - Check for duplicate included header files'
+	@echo  '  headerdep         - Detect inclusion cycles in headers'
+	@echo  '  coccicheck        - Check with Coccinelle'
+	@echo  '  kconfig-sym-check - Check for dangling Kconfig symbol references'
+	@echo  '  clang-analyzer    - Check with clang static analyzer'
+	@echo  '  clang-tidy        - Check with clang-tidy'
 	@echo  ''
 	@echo  'Tools:'
 	@echo  '  nsdeps          - Generate missing symbol namespace dependencies'
@@ -2272,7 +2274,7 @@ endif
 # Scripts to check various things for consistency
 # ---------------------------------------------------------------------------
 
-PHONY += includecheck versioncheck coccicheck
+PHONY += includecheck versioncheck coccicheck kconfig-sym-check
 
 includecheck:
 	find $(srctree)/* $(RCS_FIND_IGNORE) \
@@ -2287,6 +2289,9 @@ versioncheck:
 coccicheck:
 	$(Q)$(BASH) $(srctree)/scripts/$@
 
+kconfig-sym-check:
+	$(Q)$(PERL) $(srctree)/scripts/kconfig/kconfig-sym-check.pl $(srctree) $(KCONFIG_SYM_CHECK_EXCLUDES)
+
 PHONY += checkstack kernelrelease kernelversion image_name
 
 # UML needs a little special treatment here.  It wants to use the host
diff --git a/scripts/kconfig/kconfig-sym-check.pl b/scripts/kconfig/kconfig-sym-check.pl
new file mode 100755
index 000000000000..daa5285fdefc
--- /dev/null
+++ b/scripts/kconfig/kconfig-sym-check.pl
@@ -0,0 +1,132 @@
+#!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0
+
+use warnings;
+use strict;
+
+my $srctree = shift @ARGV;
+unless (defined $srctree) {
+	$srctree = `git rev-parse --show-toplevel 2>/dev/null`;
+	chomp $srctree;
+	my $msg = "Usage: $0 <srctree> [excludes file]\n";
+	$msg .= "Please provide <srctree>.";
+	$msg .= " Is it '$srctree'?" if $srctree;
+	$msg .= "\n";
+	die $msg;
+}
+my $kconfig_sym_check_excludes = defined $ARGV[0] ? $ARGV[0] : undef;
+
+sub indent_depth {
+	my ($ws) = @_;
+	my $col = 0;
+	for my $c (split //, $ws) {
+		$col = $c eq "\t" ? int($col / 8) * 8 + 8 : $col + 1;
+	}
+	return $col;
+}
+
+my @files = `git -C \Q$srctree\E ls-files '*Kconfig*' 2>/dev/null`;
+if (@files) {
+	chomp @files;
+	@files = map { "$srctree/$_" } @files;
+} else {
+	@files = `find \Q$srctree\E -name '*Kconfig*'`;
+	chomp @files;
+}
+
+@files = grep { !m{/scripts/kconfig/tests/} } @files;
+
+my %configs = ();
+my %refs = ();
+
+foreach my $file (@files) {
+	open F, $file or die "Cannot open $file: $!";
+
+	my $help = 0;
+	my $help_level;
+	my $level;
+
+	while (<F>) {
+		chomp;
+
+		while (/\\\s*$/) {
+			s/\\\s*$/ /;
+			my $cont = <F> // last;
+			chomp $cont;
+			$_ .= $cont;
+		}
+
+		next if /^\s*$/;
+		next if /^\s*#/;
+
+		/^(\s*)/;
+		$level = indent_depth($1);
+
+		if ($help && $level < $help_level) {
+			$help = 0;
+		}
+
+		next if ($help);
+
+		if (/^\s*(help|\-\-\-help\-\-\-)$/) {
+			$help = 1;
+			my $next;
+			while (defined($next = <F>)) {
+				last unless $next =~ /^\s*(?:#.*)?$/;
+			}
+			last unless defined $next;
+			$next =~ /^(\s*)/;
+			if (indent_depth($1) >= $level) {
+				$help_level = indent_depth($1);
+			} else {
+				$help = 0;
+			}
+			$_ = $next;
+			redo;
+		}
+
+		if (/^\s*(config|menuconfig)\s+([a-zA-Z0-9_]+)\s*(#.*)?$/) {
+			$configs{$2}++;
+			next;
+		}
+
+		if (/^\s*(default|def_bool|def_tristate|select|depends\s+on|imply|visible\s+if|range|if|bool|tristate|int|hex|string|prompt)\s+(.+)\s*$/) {
+			my $s = $2;
+			$s =~ s/"(?:[^"\\]|\\.)*"|'(?:[^'\\]|\\.)*'//g;
+			$s =~ s/#.*//;
+			$s =~ s/\$\((?:[^()]*|\((?:[^()]*|\([^()]*\))*\))*\)//g;
+			$s =~ s/%%[^%]*%%//g;
+			my @syms = split /[^a-zA-Z0-9_]+/, $s;
+			map {
+				$refs{$_}++ if (/[a-zA-Z]/ && $_ ne "if" && $_ ne "y" && $_ ne "n" && $_ ne "m" && !/^0[xX][0-9a-fA-F]+$/);
+			} @syms
+		}
+	}
+
+	close F;
+}
+
+my %known_syms = ();
+if (defined $kconfig_sym_check_excludes) {
+	my $file = $kconfig_sym_check_excludes;
+	open(F, "<", $file) or die "Cannot open $file: $!";
+	while (<F>) {
+		chomp;
+		next if /^\s*$/;
+		next if /^\s*#/;
+		$known_syms{$1}++ if (/^\s*([a-zA-Z0-9_]+)\s*(#.*)?$/);
+	}
+}
+
+my $ret = 0;
+foreach my $k (sort keys %refs) {
+	next if (exists $configs{$k} || exists $known_syms{$k});
+
+	print "$k";
+	print " - warning: '$k' is probably not what you want; Kconfig tristate literals are always lowercase ('n', 'y', 'm')" if ($k eq "N" || $k eq "Y" || $k eq "M");
+	print "\n";
+
+	$ret = 1;
+}
+
+exit $ret;
-- 
2.43.0

Re: [PATCH v4] kconfig: add kconfig-sym-check static checker

[Nicolas Schier]

On Wed, May 27, 2026 at 09:27:03AM -0500, Andrew Jones wrote:
> Add 'make kconfig-sym-check', a static checker that finds Kconfig
> symbols referenced in expressions (select, depends on, default, etc.)
> but never defined via config/menuconfig anywhere in the tree. New
> dangling symbols are reported as errors (exit 1) unless they are
> listed in an exclusion file, e.g.
> 
>  KCONFIG_SYM_CHECK_EXCLUDES=sym-check-excludes make kconfig-sym-check
> 
> The exclusion file lists one symbol per line; blank lines and lines
> starting with '#' are ignored.
> 
> The checker also warns about uppercase N/Y/M used as tristate literal
> values following the same logic as checkpatch.
> 
> This new static checker is the script used for [1] with a few
> improvements to avoid some false positives.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=216748 [1]
> Assisted-by: Claude:claude-sonnet-4-6
> Signed-off-by: Andrew Jones <andrew.jones@linux.dev>
> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Acked-by: Randy Dunlap <rdunlap@infradead.org>
> Tested-by: Randy Dunlap <rdunlap@infradead.org>
> Tested-by: Julian Braha <julianbraha@gmail.com>
> ---
> 
> Note, v1 was based on next-20260508 and this checker found 14 dangling
> symbols on that base. v4 is based on next-20260526 and there are now 15.
> EZX_PCAP has recently emerged as a new dangling symbol after commit
> b12d1da45f12 ("mfd: ezx-pcap: Remove unused driver") was merged.
> 
> v4:
>   - improved stripping of $(macro) expansions [Sashiko]
>   - improved failure when run without srctree parameter
>   - Added Julian's t-b
> 
> v3:
>   - Filter out scripts/kconfig/tests Kconfig files since they may
>     be wrong on purpose and indeed there is a 'config Y' in there
>     which would mask improper use of 'Y'. [Julian and Randy]
>   - Fixed breakage introduced in v2 when attempting to be too
>     clever...
>   - More changes from another sashiko review which required the
>     Perl to get even uglier. So ugly that I enlisted Claude to
>     help generate it.
>   - Added a sentence to the commit message to describe the excludes
>     file format.
> 
> v2:
>   - Added Andy's and Randy's tags
>   - Accept srctree as first argument so the Makefile can drop 'cd $(srctree)' [Nathan]
>   - Replace git ls-files with git+find fallback [Nathan and Andy]
>   - Changes thanks to sashiko's review
>     - strip quoted strings before inline comments to avoid '#' inside a string
>     - use [^)]* instead of .* in macro strip regex to avoid greedy match
>       eating tokens between adjacent $(macro) expansions
> 
>  Makefile                             |  23 +++--
>  scripts/kconfig/kconfig-sym-check.pl | 132 +++++++++++++++++++++++++++
>  2 files changed, 146 insertions(+), 9 deletions(-)
>  create mode 100755 scripts/kconfig/kconfig-sym-check.pl
> 
> diff --git a/Makefile b/Makefile
> index d59f703f9797..60c30116b95e 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -293,6 +293,7 @@ version_h := include/generated/uapi/linux/version.h
>  clean-targets := %clean mrproper cleandocs
>  no-dot-config-targets := $(clean-targets) \
>  			 cscope gtags TAGS tags help% %docs check% coccicheck \
> +			 kconfig-sym-check \
>  			 $(version_h) headers headers_% archheaders archscripts \
>  			 %asm-generic kernelversion %src-pkg dt_binding_check \
>  			 outputmakefile rustavailable rustfmt rustfmtcheck \
> @@ -1821,14 +1822,15 @@ help:
>  	 echo  '                    (default: $(INSTALL_HDR_PATH))'; \
>  	 echo  ''
>  	@echo  'Static analysers:'
> -	@echo  '  checkstack      - Generate a list of stack hogs and consider all functions'
> -	@echo  '                    with a stack size larger than MINSTACKSIZE (default: 100)'
> -	@echo  '  versioncheck    - Sanity check on version.h usage'
> -	@echo  '  includecheck    - Check for duplicate included header files'
> -	@echo  '  headerdep       - Detect inclusion cycles in headers'
> -	@echo  '  coccicheck      - Check with Coccinelle'
> -	@echo  '  clang-analyzer  - Check with clang static analyzer'
> -	@echo  '  clang-tidy      - Check with clang-tidy'
> +	@echo  '  checkstack        - Generate a list of stack hogs and consider all functions'
> +	@echo  '                      with a stack size larger than MINSTACKSIZE (default: 100)'
> +	@echo  '  versioncheck      - Sanity check on version.h usage'
> +	@echo  '  includecheck      - Check for duplicate included header files'
> +	@echo  '  headerdep         - Detect inclusion cycles in headers'
> +	@echo  '  coccicheck        - Check with Coccinelle'
> +	@echo  '  kconfig-sym-check - Check for dangling Kconfig symbol references'
> +	@echo  '  clang-analyzer    - Check with clang static analyzer'
> +	@echo  '  clang-tidy        - Check with clang-tidy'
>  	@echo  ''
>  	@echo  'Tools:'
>  	@echo  '  nsdeps          - Generate missing symbol namespace dependencies'
> @@ -2272,7 +2274,7 @@ endif
>  # Scripts to check various things for consistency
>  # ---------------------------------------------------------------------------
>  
> -PHONY += includecheck versioncheck coccicheck
> +PHONY += includecheck versioncheck coccicheck kconfig-sym-check
>  
>  includecheck:
>  	find $(srctree)/* $(RCS_FIND_IGNORE) \
> @@ -2287,6 +2289,9 @@ versioncheck:
>  coccicheck:
>  	$(Q)$(BASH) $(srctree)/scripts/$@
>  
> +kconfig-sym-check:
> +	$(Q)$(PERL) $(srctree)/scripts/kconfig/kconfig-sym-check.pl $(srctree) $(KCONFIG_SYM_CHECK_EXCLUDES)
> +
>  PHONY += checkstack kernelrelease kernelversion image_name
>  
>  # UML needs a little special treatment here.  It wants to use the host
> diff --git a/scripts/kconfig/kconfig-sym-check.pl b/scripts/kconfig/kconfig-sym-check.pl
> new file mode 100755
> index 000000000000..daa5285fdefc
> --- /dev/null
> +++ b/scripts/kconfig/kconfig-sym-check.pl
> @@ -0,0 +1,132 @@
> +#!/usr/bin/env perl
> +# SPDX-License-Identifier: GPL-2.0
> +
> +use warnings;
> +use strict;
> +
> +my $srctree = shift @ARGV;
> +unless (defined $srctree) {

unless (defined $srctree && -d $srctree) {

would also catch common attempts like 'kconfig-sym-check.pl --help' (at
least in most cases).


> +	$srctree = `git rev-parse --show-toplevel 2>/dev/null`;
> +	chomp $srctree;
> +	my $msg = "Usage: $0 <srctree> [excludes file]\n";
> +	$msg .= "Please provide <srctree>.";
> +	$msg .= " Is it '$srctree'?" if $srctree;
> +	$msg .= "\n";
> +	die $msg;
> +}
> +my $kconfig_sym_check_excludes = defined $ARGV[0] ? $ARGV[0] : undef;
> +
> +sub indent_depth {
> +	my ($ws) = @_;
> +	my $col = 0;
> +	for my $c (split //, $ws) {
> +		$col = $c eq "\t" ? int($col / 8) * 8 + 8 : $col + 1;
> +	}
> +	return $col;
> +}
> +
> +my @files = `git -C \Q$srctree\E ls-files '*Kconfig*' 2>/dev/null`;
> +if (@files) {
> +	chomp @files;
> +	@files = map { "$srctree/$_" } @files;
> +} else {
> +	@files = `find \Q$srctree\E -name '*Kconfig*'`;
> +	chomp @files;
> +}
> +
> +@files = grep { !m{/scripts/kconfig/tests/} } @files;
> +
> +my %configs = ();
> +my %refs = ();
> +
> +foreach my $file (@files) {
> +	open F, $file or die "Cannot open $file: $!";
> +
> +	my $help = 0;
> +	my $help_level;
> +	my $level;
> +
> +	while (<F>) {
> +		chomp;
> +
> +		while (/\\\s*$/) {
> +			s/\\\s*$/ /;
> +			my $cont = <F> // last;
> +			chomp $cont;
> +			$_ .= $cont;
> +		}
> +
> +		next if /^\s*$/;
> +		next if /^\s*#/;
> +
> +		/^(\s*)/;
> +		$level = indent_depth($1);
> +
> +		if ($help && $level < $help_level) {
> +			$help = 0;
> +		}
> +
> +		next if ($help);
> +
> +		if (/^\s*(help|\-\-\-help\-\-\-)$/) {
> +			$help = 1;
> +			my $next;
> +			while (defined($next = <F>)) {
> +				last unless $next =~ /^\s*(?:#.*)?$/;
> +			}
> +			last unless defined $next;
> +			$next =~ /^(\s*)/;
> +			if (indent_depth($1) >= $level) {
> +				$help_level = indent_depth($1);
> +			} else {
> +				$help = 0;
> +			}
> +			$_ = $next;
> +			redo;
> +		}
> +
> +		if (/^\s*(config|menuconfig)\s+([a-zA-Z0-9_]+)\s*(#.*)?$/) {

Sashiko claims that named choices are not catched here (but I could not
find any).  And all current findings of kconfig-sym-check look valid to
me, thus I don't see a strong need to adjust here for now.

> +			$configs{$2}++;
> +			next;
> +		}
> +
> +		if (/^\s*(default|def_bool|def_tristate|select|depends\s+on|imply|visible\s+if|range|if|bool|tristate|int|hex|string|prompt)\s+(.+)\s*$/) {
> +			my $s = $2;
> +			$s =~ s/"(?:[^"\\]|\\.)*"|'(?:[^'\\]|\\.)*'//g;
> +			$s =~ s/#.*//;
> +			$s =~ s/\$\((?:[^()]*|\((?:[^()]*|\([^()]*\))*\))*\)//g;
> +			$s =~ s/%%[^%]*%%//g;
> +			my @syms = split /[^a-zA-Z0-9_]+/, $s;
> +			map {
> +				$refs{$_}++ if (/[a-zA-Z]/ && $_ ne "if" && $_ ne "y" && $_ ne "n" && $_ ne "m" && !/^0[xX][0-9a-fA-F]+$/);
> +			} @syms
> +		}
> +	}
> +
> +	close F;
> +}
> +
> +my %known_syms = ();
> +if (defined $kconfig_sym_check_excludes) {
> +	my $file = $kconfig_sym_check_excludes;
> +	open(F, "<", $file) or die "Cannot open $file: $!";
> +	while (<F>) {
> +		chomp;
> +		next if /^\s*$/;
> +		next if /^\s*#/;
> +		$known_syms{$1}++ if (/^\s*([a-zA-Z0-9_]+)\s*(#.*)?$/);
> +	}
> +}
> +
> +my $ret = 0;
> +foreach my $k (sort keys %refs) {
> +	next if (exists $configs{$k} || exists $known_syms{$k});
> +
> +	print "$k";
> +	print " - warning: '$k' is probably not what you want; Kconfig tristate literals are always lowercase ('n', 'y', 'm')" if ($k eq "N" || $k eq "Y" || $k eq "M");
> +	print "\n";

Just bike-shedding:  I'd liked if kconfig-sym-check would output the
origin of its findings (gcc error style would help common tooling to
jump there, too).  But finding stray ever-undefined symbols is a good
thing, and finding these is no magic.

As my perl is in a quite bad state, I cannot review in-depth.  Would you
be available for maintaining the script yourself (= entry in
MAINTAINERS)?

Tested-by: Nicolas Schier <nsc@kernel.org>
Acked-by: Nicolas Schier <nsc@kernel.org>

Re: [PATCH v4] kconfig: add kconfig-sym-check static checker

[Nathan Chancellor]

On Wed, 27 May 2026 09:27:03 -0500, Andrew Jones wrote:
> kconfig: add kconfig-sym-check static checker

I took this in its current form since perfect is the enemy of good but I
think some of Nicolas's comments are certainly relevant, so please feel
free to set fixups on top of kbuild-next as you see fit.

Applied to

  https://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux.git kbuild-next

Thanks!

[1/1] kconfig: add kconfig-sym-check static checker
      https://git.kernel.org/kbuild/c/f58316a441b46

Please look out for regression or issue reports or other follow up
comments, as they may result in the patch/series getting dropped or
reverted. Patches applied to an "unstable" branch are accepted pending
wider testing in -next and any post-commit review; they will generally
be moved to the main branch in a week if no issues are found.

Best regards,
-- 
Cheers,
Nathan

Re: [PATCH v4] kconfig: add kconfig-sym-check static checker

[Andrew Jones]

On Tue, Jun 09, 2026 at 04:46:09PM -0700, Nathan Chancellor wrote:
> On Wed, 27 May 2026 09:27:03 -0500, Andrew Jones wrote:
> > kconfig: add kconfig-sym-check static checker
> 
> I took this in its current form since perfect is the enemy of good but I
> think some of Nicolas's comments are certainly relevant, so please feel
> free to set fixups on top of kbuild-next as you see fit.
> 
> Applied to
> 
>   https://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux.git kbuild-next
> 
> Thanks!
> 
> [1/1] kconfig: add kconfig-sym-check static checker
>       https://git.kernel.org/kbuild/c/f58316a441b46
> 
> Please look out for regression or issue reports or other follow up
> comments, as they may result in the patch/series getting dropped or
> reverted. Patches applied to an "unstable" branch are accepted pending
> wider testing in -next and any post-commit review; they will generally
> be moved to the main branch in a week if no issues are found.

Thanks, Nathan.

I've been meaning to get back to this in order to address Nicolas's
comments, but I got buried in other things recently and have vacation
next week. I won't drop those improvement suggestions from my TODO,
though, so I'll hopefully be able to address them in the near future.
And I'm happy to keep it maintained going forward as well.

Thanks,
drew

Re: [PATCH v4] kconfig: add kconfig-sym-check static checker

[Nathan Chancellor]

Hi Drew,

On Wed, Jun 10, 2026 at 11:00:15AM -0500, Andrew Jones wrote:
> I've been meaning to get back to this in order to address Nicolas's
> comments, but I got buried in other things recently and have vacation
> next week. I won't drop those improvement suggestions from my TODO,
> though, so I'll hopefully be able to address them in the near future.
> And I'm happy to keep it maintained going forward as well.

No worries at all, I see quality of life improvements as "things to work
on when things are slow" and things are slower during the summer
anyways, so please do not feel like you have to rush to get these done.
Just wanted to make sure they were on your radar.

-- 
Cheers,
Nathan