#! /usr/bin/perl
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#! /usr/bin/perl
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#
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#
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# checkconfig: find uses of CONFIG_* names without matching definitions.
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# checkconfig: find uses of CONFIG_* names without matching definitions.
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# Copyright abandoned, 1998, Michael Elizabeth Chastain <mailto:mec@shout.net>.
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# Copyright abandoned, 1998, Michael Elizabeth Chastain <mailto:mec@shout.net>.
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use integer;
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use integer;
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$| = 1;
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$| = 1;
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foreach $file (@ARGV)
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foreach $file (@ARGV)
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{
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{
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# Open this file.
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# Open this file.
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open(FILE, $file) || die "Can't open $file: $!\n";
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open(FILE, $file) || die "Can't open $file: $!\n";
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# Initialize variables.
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# Initialize variables.
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my $fInComment = 0;
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my $fInComment = 0;
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my $fInString = 0;
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my $fInString = 0;
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my $fUseConfig = 0;
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my $fUseConfig = 0;
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my $iLinuxConfig = 0;
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my $iLinuxConfig = 0;
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my %configList = ();
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my %configList = ();
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LINE: while ( <FILE> )
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LINE: while ( <FILE> )
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{
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{
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# Strip comments.
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# Strip comments.
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$fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
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$fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
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m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
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m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
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# Pick up definitions.
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# Pick up definitions.
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if ( m/^\s*#/o )
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if ( m/^\s*#/o )
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{
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{
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$iLinuxConfig = $. if m/^\s*#\s*include\s*"linux\/config\.h"/o;
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$iLinuxConfig = $. if m/^\s*#\s*include\s*"linux\/config\.h"/o;
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$configList{uc $1} = 1 if m/^\s*#\s*include\s*"config\/(\S*)\.h"/o;
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$configList{uc $1} = 1 if m/^\s*#\s*include\s*"config\/(\S*)\.h"/o;
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}
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}
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# Strip strings.
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# Strip strings.
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$fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
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$fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
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m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
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m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
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# Pick up definitions.
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# Pick up definitions.
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if ( m/^\s*#/o )
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if ( m/^\s*#/o )
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{
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{
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$iLinuxConfig = $. if m/^\s*#\s*include\s*<linux\/config\.h>/o;
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$iLinuxConfig = $. if m/^\s*#\s*include\s*<linux\/config\.h>/o;
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$configList{uc $1} = 1 if m/^\s*#\s*include\s*<config\/(\S*)\.h>/o;
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$configList{uc $1} = 1 if m/^\s*#\s*include\s*<config\/(\S*)\.h>/o;
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$configList{$1} = 1 if m/^\s*#\s*define\s+CONFIG_(\w*)/o;
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$configList{$1} = 1 if m/^\s*#\s*define\s+CONFIG_(\w*)/o;
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$configList{$1} = 1 if m/^\s*#\s*undef\s+CONFIG_(\w*)/o;
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$configList{$1} = 1 if m/^\s*#\s*undef\s+CONFIG_(\w*)/o;
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}
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}
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# Look for usages.
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# Look for usages.
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next unless m/CONFIG_/o;
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next unless m/CONFIG_/o;
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WORD: while ( m/\bCONFIG_(\w+)/og )
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WORD: while ( m/\bCONFIG_(\w+)/og )
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{
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{
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$fUseConfig = 1;
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$fUseConfig = 1;
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last LINE if $iLinuxConfig;
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last LINE if $iLinuxConfig;
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next WORD if exists $configList{$1};
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next WORD if exists $configList{$1};
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print "$file: $.: need CONFIG_$1.\n";
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print "$file: $.: need CONFIG_$1.\n";
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$configList{$1} = 0;
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$configList{$1} = 0;
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}
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}
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}
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}
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# Report superfluous includes.
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# Report superfluous includes.
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if ( $iLinuxConfig && ! $fUseConfig )
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if ( $iLinuxConfig && ! $fUseConfig )
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{ print "$file: $iLinuxConfig: linux/config.h not needed.\n"; }
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{ print "$file: $iLinuxConfig: linux/config.h not needed.\n"; }
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close(FILE);
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close(FILE);
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}
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}
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