forked from rpms/kernel
b8c626ce78
This script detects unknown Kconfig symbols by checking whether the Kconfig macros used in the various *.config files have a corresponding Kconfig symbol in the tree. Its core test is done with grep(). It turns out that match pattern used in grep() is too broad. For instance, it doesn't report CONFIG_ACPI_PROCFS as unknown because there is a Kconfig entry for ACPI_PROCFS_POWER in the tree. Make the pattern match Kconfig symbols exactly to correct this. Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
84 lines
1.4 KiB
Perl
84 lines
1.4 KiB
Perl
# By Paul Bolle October 2014.
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#
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# Contributed to the public domain by its author.
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use 5.016;
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use warnings;
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use autodie;
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use File::Find;
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my @Kconfigs;
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my $Kconfigre = qr/Kconfig.*/;
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my $configre = qr/^\s*(menu)?config\s+(?<config>(\w+))$/;
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my $CONFIG_re = qr/\bCONFIG_(?<CONFIG_>(\w+))/;
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sub match {
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push( @Kconfigs, $File::Find::name ) if ($_ =~ $Kconfigre);
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}
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sub parse_kconfig {
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my ($path) = @_;
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my @ret;
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open( my $kconfig, "<", $path );
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my $slurp = do { local $/ = undef; <$kconfig> };
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close( $kconfig );
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my @lines = split ( /\n/, $slurp );
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foreach my $line (@lines) {
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if ($line =~ /$configre/) {
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push( @ret, $+{config} );
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}
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}
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@ret;
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}
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sub parse_shipped {
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my ($path) = @_;
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my @ret;
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open( my $shipped, "<", $path );
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my $slurp = do { local $/ = undef; <$shipped> };
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close( $shipped );
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my @lines = split ( /\n/, $slurp );
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my $i = 1;
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foreach my $line (@lines) {
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if ($line =~ /$CONFIG_re/) {
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push( @ret, [$i, $+{CONFIG_}] );
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}
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$i++;
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}
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@ret;
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}
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exit main ( @ARGV );
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sub main {
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my %configs;
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find( \&match, @_ );
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foreach my $Kconfig (@Kconfigs) {
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my (@tmp) = parse_kconfig( $Kconfig );
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foreach my $config ( @tmp ) {
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$configs{ $config }++;
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}
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}
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foreach my $shipped (glob("*.config")) {
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my (@tmp) = parse_shipped( $shipped );
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foreach my $ref ( @tmp ) {
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say( STDERR "$shipped:$ref->[0]: No Kconfig symbol matches 'CONFIG_$ref->[1]'" )
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unless (grep( /^$ref->[1]$/, keys( %configs )));
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}
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}
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0;
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}
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