Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #! /usr/bin/perl |
2 | # | |
3 | # checkconfig: find uses of CONFIG_* names without matching definitions. | |
4 | # Copyright abandoned, 1998, Michael Elizabeth Chastain <mailto:mec@shout.net>. | |
5 | ||
6 | use integer; | |
7 | ||
8 | $| = 1; | |
9 | ||
10 | foreach $file (@ARGV) | |
11 | { | |
12 | # Open this file. | |
13 | open(FILE, $file) || die "Can't open $file: $!\n"; | |
14 | ||
15 | # Initialize variables. | |
16 | my $fInComment = 0; | |
17 | my $fInString = 0; | |
18 | my $fUseConfig = 0; | |
19 | my $iLinuxConfig = 0; | |
20 | my %configList = (); | |
21 | ||
22 | LINE: while ( <FILE> ) | |
23 | { | |
24 | # Strip comments. | |
25 | $fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next); | |
26 | m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1))); | |
27 | ||
28 | # Pick up definitions. | |
29 | if ( m/^\s*#/o ) | |
30 | { | |
31 | $iLinuxConfig = $. if m/^\s*#\s*include\s*"linux\/config\.h"/o; | |
32 | $configList{uc $1} = 1 if m/^\s*#\s*include\s*"config\/(\S*)\.h"/o; | |
33 | } | |
34 | ||
35 | # Strip strings. | |
36 | $fInString && (s+^.*?"+ +o ? ($fInString = 0) : next); | |
37 | m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1))); | |
38 | ||
39 | # Pick up definitions. | |
40 | if ( m/^\s*#/o ) | |
41 | { | |
42 | $iLinuxConfig = $. if m/^\s*#\s*include\s*<linux\/config\.h>/o; | |
43 | $configList{uc $1} = 1 if m/^\s*#\s*include\s*<config\/(\S*)\.h>/o; | |
44 | $configList{$1} = 1 if m/^\s*#\s*define\s+CONFIG_(\w*)/o; | |
45 | $configList{$1} = 1 if m/^\s*#\s*undef\s+CONFIG_(\w*)/o; | |
46 | } | |
47 | ||
48 | # Look for usages. | |
49 | next unless m/CONFIG_/o; | |
50 | WORD: while ( m/\bCONFIG_(\w+)/og ) | |
51 | { | |
52 | $fUseConfig = 1; | |
53 | last LINE if $iLinuxConfig; | |
54 | next WORD if exists $configList{$1}; | |
55 | print "$file: $.: need CONFIG_$1.\n"; | |
56 | $configList{$1} = 0; | |
57 | } | |
58 | } | |
59 | ||
60 | # Report superfluous includes. | |
61 | if ( $iLinuxConfig && ! $fUseConfig ) | |
62 | { print "$file: $iLinuxConfig: linux/config.h not needed.\n"; } | |
63 | ||
64 | close(FILE); | |
65 | } |