| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 |
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| 6 | use integer;
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| 7 |
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| 8 | $| = 1;
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| 9 |
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| 10 | foreach $file (@ARGV)
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| 11 | {
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| 12 | |
| 13 | open(FILE, $file) || die "Can't open $file: $!\n";
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| 14 |
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| 15 | |
| 16 | my $fInComment = 0;
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| 17 | my $fInString = 0;
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| 18 | my $fUseConfig = 0;
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| 19 | my $iLinuxConfig = 0;
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| 20 | my %configList = ();
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| 21 |
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| 22 | LINE: while ( <FILE> )
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| 23 | {
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| 24 | |
| 25 | $fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
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| 26 | m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
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| 27 |
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| 28 | |
| 29 | if ( m/^\s*#/o )
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| 30 | {
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| 31 | $iLinuxConfig = $. if m/^\s*#\s*include\s*"linux\/config\.h"/o;
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| 32 | $configList{uc $1} = 1 if m/^\s*#\s*include\s*"config\/(\S*)\.h"/o;
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| 33 | }
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| 34 |
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| 35 | |
| 36 | $fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
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| 37 | m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
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| 38 |
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| 39 | |
| 40 | if ( m/^\s*#/o )
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| 41 | {
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| 42 | $iLinuxConfig = $. if m/^\s*#\s*include\s*<linux\/config\.h>/o;
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| 43 | $configList{uc $1} = 1 if m/^\s*#\s*include\s*<config\/(\S*)\.h>/o;
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| 44 | $configList{$1} = 1 if m/^\s*#\s*define\s+CONFIG_(\w*)/o;
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| 45 | $configList{$1} = 1 if m/^\s*#\s*undef\s+CONFIG_(\w*)/o;
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| 46 | }
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| 47 |
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| 48 | |
| 49 | next unless m/CONFIG_/o;
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| 50 | WORD: while ( m/\bCONFIG_(\w+)/og )
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| 51 | {
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| 52 | $fUseConfig = 1;
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| 53 | last LINE if $iLinuxConfig;
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| 54 | next WORD if exists $configList{$1};
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| 55 | print "$file: $.: need CONFIG_$1.\n";
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| 56 | $configList{$1} = 0;
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| 57 | }
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| 58 | }
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| 59 |
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| 60 | |
| 61 | if ( $iLinuxConfig && ! $fUseConfig )
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| 62 | { print "$file: $iLinuxConfig: linux/config.h not needed.\n"; }
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| 63 |
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| 64 | close(FILE);
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| 65 | }
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