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Commit | Line | Data |
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c5f08860 | 1 | # $Id$ |
38a2649a | 2 | # A script for building kernel config from multiarch config file. |
3 | # It also has some file merging facilities. | |
4 | # | |
5 | # usage: | |
6 | # awk -v arch=%{_target_base_arch} -f path/to/kernel-config.awk \ | |
c5f08860 | 7 | # kernel-important.config kernel-multiarch.config \ |
8 | # kernel-%{arch}.config kernel-%{some_feature}.config \ | |
38a2649a | 9 | # > .config |
10 | # | |
c5f08860 | 11 | # Authors: |
12 | # - Przemysław Iskra <sparky@pld-linux.org> | |
d91f8167 | 13 | # parts based on kernel-config.py, by: |
14 | # - arekm@pld-linux.org | |
15 | # - glen@pld-linux.org | |
c5f08860 | 16 | # |
38a2649a | 17 | # TODO: |
38a2649a | 18 | # - smarter arch split, there could be strings with spaces |
19 | # ( kernel-config.py does not suppoty it either ) | |
20 | # - use as many warnings as possible, we want our configs to be clean | |
c5f08860 | 21 | |
22 | # no: | |
d91f8167 | 23 | # CONFIG_SOMETHING=n |
24 | # SOMETHING=n | |
25 | # CONFIG_SOMETHING all=n | |
c5f08860 | 26 | # SOMETHING all=n |
d91f8167 | 27 | # # CONFIG_SOMETHING is not set -- special case |
c5f08860 | 28 | |
29 | # yes/module/other | |
30 | # CONFIG_SOMETHING=y | |
d91f8167 | 31 | # SOMETHING=y |
32 | # CONFIG_SOMETHING all=y | |
c5f08860 | 33 | # SOMETHING all=y |
34 | ||
35 | ||
36 | # return actual file name (without path) and line number | |
37 | function fileLine() { | |
38 | f = FILENAME | |
d91f8167 | 39 | sub( /^.*\//, "", f ) # strip path |
c5f08860 | 40 | |
41 | return f " (" FNR ")" | |
42 | } | |
38a2649a | 43 | |
44 | function warn( msg ) { | |
c5f08860 | 45 | print fileLine() ": " msg > "/dev/stderr" |
38a2649a | 46 | } |
47 | ||
48 | BEGIN { | |
49 | if ( ! arch ) { | |
c5f08860 | 50 | print "arch= must be specified" > "/dev/stderr" |
38a2649a | 51 | exit 1 |
52 | } | |
6c506f70 | 53 | if ( ! basearch ) |
54 | basearch = arch | |
55 | ||
56 | targetLevel[ "all" ] = 1 | |
57 | targetLevel[ basearch ] = 2 | |
58 | targetLevel[ arch ] = 3 | |
59 | ||
32610d56 | 60 | shouldDie = 0 |
61 | } | |
62 | ||
63 | function dieLater( code ) { | |
64 | if ( shouldDie < code ) | |
65 | shouldDie = code | |
38a2649a | 66 | } |
67 | ||
c5f08860 | 68 | # convert special case: |
69 | # # CONFIG_SOMETHING it not set | |
70 | # to: | |
71 | # SOMETHING all=n | |
d91f8167 | 72 | /^# CONFIG_[A-Za-z0-9_]+ is not set$/ { |
73 | match( $0, /CONFIG_[A-Za-z0-9_]+/ ) | |
c5f08860 | 74 | option = substr( $0, RSTART, RLENGTH) |
75 | $0 = option " all=n" | |
38a2649a | 76 | } |
77 | ||
d91f8167 | 78 | # ignore all the comments and empty lines |
38a2649a | 79 | /^#/ || /^\s*$/ { |
80 | next | |
81 | } | |
82 | ||
c5f08860 | 83 | !/^CONFIG_/ { |
84 | $0 = "CONFIG_" $0 | |
38a2649a | 85 | } |
86 | ||
87 | { | |
88 | option = $1 | |
89 | line = $0 | |
c5f08860 | 90 | value = "" |
38a2649a | 91 | if ( option ~ /=/ ) { |
d91f8167 | 92 | sub( /=.*$/, "", option ) |
93 | sub( /^[^=]*=/, "", line ) | |
c5f08860 | 94 | value = line |
38a2649a | 95 | } else { |
d91f8167 | 96 | sub( "^" option, "", line ) |
97 | sub( /^[ \t]*/, "", line ) | |
98 | ||
99 | if ( line ~ /"/ ) { | |
100 | # there can be white spaces | |
101 | i = 0 | |
102 | while ( match( line, /^[^=]+="[^"]*"/ ) ) { | |
103 | archs[ (++i) ] = substr( line, RSTART, RLENGTH ) | |
104 | line = substr( line, RSTART + RLENGTH ) | |
105 | sub( /^[ \t]*/, "", line ) | |
106 | } | |
107 | } else { | |
108 | split( line, archs ) | |
109 | } | |
6c506f70 | 110 | |
111 | level = 0 | |
c5f08860 | 112 | for ( i in archs ) { |
113 | split( archs[i], opt, "=" ); | |
6c506f70 | 114 | tl = targetLevel[ opt[ 1 ] ] |
115 | if ( tl > level ) { | |
c5f08860 | 116 | value = opt[2] |
6c506f70 | 117 | level = tl |
c5f08860 | 118 | } |
38a2649a | 119 | } |
120 | } | |
38a2649a | 121 | |
49e65d69 | 122 | # completely ignore lines with no value |
123 | if ( length( value ) == 0 ) | |
124 | next | |
125 | ||
126 | fileOption = FILENAME "/" option | |
127 | if ( fileOption in outputByFile ) { | |
128 | warn( "ERROR: " option " already defined in this file at line " outputByFile[ fileOption ] ) | |
129 | dieLater( 2 ) | |
130 | next | |
131 | } else | |
132 | outputByFile[ fileOption ] = FNR | |
133 | ||
c5f08860 | 134 | if ( option in outputArray ) { |
49e65d69 | 135 | warn( "Warning: " option " already defined in: " outputArray[ option ] ) |
c5f08860 | 136 | next |
49e65d69 | 137 | } else |
138 | outputArray[ option ] = fileLine() | |
c5f08860 | 139 | |
49e65d69 | 140 | if ( value == "n" ) |
141 | out = "# " option " is not set" | |
142 | else { | |
143 | out = option "=" value | |
144 | ||
145 | if ( value == "y" || value == "m" ) | |
146 | ; # OK | |
147 | else if ( value ~ /^"[^"]*"$/ ) | |
148 | ; # OK | |
149 | else if ( value ~ /^-?[0-9]+$/ || value ~ /^0x[0-9A-Fa-f]+$/ ) | |
150 | ; # OK | |
32610d56 | 151 | else { |
49e65d69 | 152 | warn( "ERROR: Incorrect value: " $0 ) |
153 | dieLater( 1 ) | |
32610d56 | 154 | } |
38a2649a | 155 | } |
49e65d69 | 156 | |
157 | print out | |
38a2649a | 158 | } |
159 | ||
160 | END { | |
32610d56 | 161 | exit shouldDie |
38a2649a | 162 | } |