]>
Commit | Line | Data |
---|---|---|
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 | } | |
32610d56 | 53 | shouldDie = 0 |
54 | } | |
55 | ||
56 | function dieLater( code ) { | |
57 | if ( shouldDie < code ) | |
58 | shouldDie = code | |
38a2649a | 59 | } |
60 | ||
c5f08860 | 61 | # convert special case: |
62 | # # CONFIG_SOMETHING it not set | |
63 | # to: | |
64 | # SOMETHING all=n | |
d91f8167 | 65 | /^# CONFIG_[A-Za-z0-9_]+ is not set$/ { |
66 | match( $0, /CONFIG_[A-Za-z0-9_]+/ ) | |
c5f08860 | 67 | option = substr( $0, RSTART, RLENGTH) |
68 | $0 = option " all=n" | |
38a2649a | 69 | } |
70 | ||
d91f8167 | 71 | # ignore all the comments and empty lines |
38a2649a | 72 | /^#/ || /^\s*$/ { |
73 | next | |
74 | } | |
75 | ||
c5f08860 | 76 | !/^CONFIG_/ { |
77 | $0 = "CONFIG_" $0 | |
38a2649a | 78 | } |
79 | ||
80 | { | |
81 | option = $1 | |
82 | line = $0 | |
c5f08860 | 83 | value = "" |
38a2649a | 84 | if ( option ~ /=/ ) { |
d91f8167 | 85 | sub( /=.*$/, "", option ) |
86 | sub( /^[^=]*=/, "", line ) | |
c5f08860 | 87 | value = line |
38a2649a | 88 | } else { |
d91f8167 | 89 | sub( "^" option, "", line ) |
90 | sub( /^[ \t]*/, "", line ) | |
91 | ||
92 | if ( line ~ /"/ ) { | |
93 | # there can be white spaces | |
94 | i = 0 | |
95 | while ( match( line, /^[^=]+="[^"]*"/ ) ) { | |
96 | archs[ (++i) ] = substr( line, RSTART, RLENGTH ) | |
97 | line = substr( line, RSTART + RLENGTH ) | |
98 | sub( /^[ \t]*/, "", line ) | |
99 | } | |
100 | } else { | |
101 | split( line, archs ) | |
102 | } | |
c5f08860 | 103 | for ( i in archs ) { |
104 | split( archs[i], opt, "=" ); | |
105 | if ( opt[1] == "all" ) | |
106 | value = opt[2] | |
38a2649a | 107 | |
c5f08860 | 108 | if ( opt[1] == arch ) { |
109 | # found best match, don't look further | |
110 | value = opt[2] | |
111 | break | |
112 | } | |
38a2649a | 113 | } |
114 | } | |
38a2649a | 115 | |
c5f08860 | 116 | if ( option in outputArray ) { |
117 | warn( option " already defined in: " outputArray[ option ] ) | |
118 | next | |
119 | } | |
120 | ||
121 | if ( length( value ) ) { | |
122 | if ( value == "n" ) | |
38a2649a | 123 | out = "# " option " is not set" |
32610d56 | 124 | else { |
c5f08860 | 125 | out = option "=" value |
32610d56 | 126 | |
127 | if ( value == "y" || value == "m" ) | |
d91f8167 | 128 | ; # OK |
32610d56 | 129 | else if ( value ~ /^"[^"]*"$/ ) |
d91f8167 | 130 | ; # OK |
32610d56 | 131 | else if ( value ~ /^-?[0-9]+$/ || value ~ /^0x[0-9A-Fa-f]+$/ ) |
d91f8167 | 132 | ; # OK |
32610d56 | 133 | else { |
134 | warn( "ERROR: Incorrect value: " $0 ) | |
135 | dieLater( 1 ) | |
136 | } | |
137 | } | |
c5f08860 | 138 | |
38a2649a | 139 | print out |
c5f08860 | 140 | outputArray[ option ] = fileLine() |
38a2649a | 141 | } |
142 | } | |
143 | ||
144 | END { | |
32610d56 | 145 | exit shouldDie |
38a2649a | 146 | } |