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dcc60243 SR |
1 | #!/usr/bin/perl -w |
2 | # | |
cce1dac8 | 3 | # Copyright 2005-2009 - Steven Rostedt |
dcc60243 SR |
4 | # Licensed under the terms of the GNU GPL License version 2 |
5 | # | |
6 | # It's simple enough to figure out how this works. | |
7 | # If not, then you can ask me at stripconfig@goodmis.org | |
8 | # | |
9 | # What it does? | |
10 | # | |
11 | # If you have installed a Linux kernel from a distribution | |
12 | # that turns on way too many modules than you need, and | |
13 | # you only want the modules you use, then this program | |
14 | # is perfect for you. | |
15 | # | |
16 | # It gives you the ability to turn off all the modules that are | |
17 | # not loaded on your system. | |
18 | # | |
19 | # Howto: | |
20 | # | |
21 | # 1. Boot up the kernel that you want to stream line the config on. | |
22 | # 2. Change directory to the directory holding the source of the | |
23 | # kernel that you just booted. | |
24 | # 3. Copy the configuraton file to this directory as .config | |
25 | # 4. Have all your devices that you need modules for connected and | |
26 | # operational (make sure that their corresponding modules are loaded) | |
27 | # 5. Run this script redirecting the output to some other file | |
28 | # like config_strip. | |
29 | # 6. Back up your old config (if you want too). | |
30 | # 7. copy the config_strip file to .config | |
31 | # 8. Run "make oldconfig" | |
32 | # | |
33 | # Now your kernel is ready to be built with only the modules that | |
34 | # are loaded. | |
35 | # | |
36 | # Here's what I did with my Debian distribution. | |
37 | # | |
38 | # cd /usr/src/linux-2.6.10 | |
39 | # cp /boot/config-2.6.10-1-686-smp .config | |
40 | # ~/bin/streamline_config > config_strip | |
41 | # mv .config config_sav | |
42 | # mv config_strip .config | |
43 | # make oldconfig | |
44 | # | |
cf5a189d | 45 | use strict; |
22d550ae | 46 | use Getopt::Long; |
cf5a189d | 47 | |
4503379c SR |
48 | # set the environment variable LOCALMODCONFIG_DEBUG to get |
49 | # debug output. | |
50 | my $debugprint = 0; | |
51 | $debugprint = 1 if (defined($ENV{LOCALMODCONFIG_DEBUG})); | |
52 | ||
53 | sub dprint { | |
54 | return if (!$debugprint); | |
55 | print STDERR @_; | |
56 | } | |
57 | ||
dcc60243 | 58 | my $config = ".config"; |
dcc60243 | 59 | |
cdfc4795 SR |
60 | my $uname = `uname -r`; |
61 | chomp $uname; | |
62 | ||
63 | my @searchconfigs = ( | |
a9024838 SR |
64 | { |
65 | "file" => ".config", | |
66 | "exec" => "cat", | |
67 | }, | |
cdfc4795 SR |
68 | { |
69 | "file" => "/proc/config.gz", | |
70 | "exec" => "zcat", | |
71 | }, | |
810b2be6 SR |
72 | { |
73 | "file" => "/boot/config-$uname", | |
74 | "exec" => "cat", | |
75 | }, | |
cdfc4795 SR |
76 | { |
77 | "file" => "/boot/vmlinuz-$uname", | |
78 | "exec" => "scripts/extract-ikconfig", | |
79 | "test" => "scripts/extract-ikconfig", | |
80 | }, | |
81 | { | |
82 | "file" => "vmlinux", | |
83 | "exec" => "scripts/extract-ikconfig", | |
84 | "test" => "scripts/extract-ikconfig", | |
85 | }, | |
86 | { | |
87 | "file" => "/lib/modules/$uname/kernel/kernel/configs.ko", | |
88 | "exec" => "scripts/extract-ikconfig", | |
89 | "test" => "scripts/extract-ikconfig", | |
90 | }, | |
91 | { | |
92 | "file" => "kernel/configs.ko", | |
93 | "exec" => "scripts/extract-ikconfig", | |
94 | "test" => "scripts/extract-ikconfig", | |
95 | }, | |
96 | { | |
97 | "file" => "kernel/configs.o", | |
98 | "exec" => "scripts/extract-ikconfig", | |
99 | "test" => "scripts/extract-ikconfig", | |
100 | }, | |
cdfc4795 SR |
101 | ); |
102 | ||
3f0c5413 | 103 | sub read_config { |
cdfc4795 SR |
104 | foreach my $conf (@searchconfigs) { |
105 | my $file = $conf->{"file"}; | |
106 | ||
107 | next if ( ! -f "$file"); | |
108 | ||
109 | if (defined($conf->{"test"})) { | |
110 | `$conf->{"test"} $conf->{"file"} 2>/dev/null`; | |
111 | next if ($?); | |
112 | } | |
113 | ||
114 | my $exec = $conf->{"exec"}; | |
115 | ||
116 | print STDERR "using config: '$file'\n"; | |
117 | ||
3f0c5413 BP |
118 | open(my $infile, '-|', "$exec $file") || die "Failed to run $exec $file"; |
119 | my @x = <$infile>; | |
120 | close $infile; | |
121 | return @x; | |
cdfc4795 SR |
122 | } |
123 | die "No config file found"; | |
124 | } | |
125 | ||
3f0c5413 | 126 | my @config_file = read_config; |
4f4c51c9 | 127 | |
22d550ae AL |
128 | # Parse options |
129 | my $localmodconfig = 0; | |
130 | my $localyesconfig = 0; | |
131 | ||
132 | GetOptions("localmodconfig" => \$localmodconfig, | |
133 | "localyesconfig" => \$localyesconfig); | |
134 | ||
463bf900 | 135 | # Get the build source and top level Kconfig file (passed in) |
224a2571 | 136 | my $ksource = ($ARGV[0] ? $ARGV[0] : '.'); |
463bf900 | 137 | my $kconfig = $ARGV[1]; |
f597a718 | 138 | my $lsmod_file = $ENV{'LSMOD'}; |
463bf900 | 139 | |
c0ddc8c7 | 140 | my @makefiles = `find $ksource -name Makefile -or -name Kbuild 2>/dev/null`; |
17431928 TF |
141 | chomp @makefiles; |
142 | ||
dcc60243 SR |
143 | my %depends; |
144 | my %selects; | |
145 | my %prompts; | |
146 | my %objects; | |
147 | my $var; | |
13d7e938 SR |
148 | my $iflevel = 0; |
149 | my @ifdeps; | |
dcc60243 | 150 | |
dcc60243 SR |
151 | # prevent recursion |
152 | my %read_kconfigs; | |
153 | ||
154 | sub read_kconfig { | |
155 | my ($kconfig) = @_; | |
156 | ||
157 | my $state = "NONE"; | |
158 | my $config; | |
dcc60243 | 159 | |
20d19047 SR |
160 | my $cont = 0; |
161 | my $line; | |
162 | ||
4908980b SR |
163 | my $source = "$ksource/$kconfig"; |
164 | my $last_source = ""; | |
165 | ||
166 | # Check for any environment variables used | |
167 | while ($source =~ /\$(\w+)/ && $last_source ne $source) { | |
168 | my $env = $1; | |
169 | $last_source = $source; | |
170 | $source =~ s/\$$env/$ENV{$env}/; | |
171 | } | |
172 | ||
e0d28694 BP |
173 | open(my $kinfile, '<', $source) || die "Can't open $kconfig"; |
174 | while (<$kinfile>) { | |
dcc60243 SR |
175 | chomp; |
176 | ||
20d19047 SR |
177 | # Make sure that lines ending with \ continue |
178 | if ($cont) { | |
179 | $_ = $line . " " . $_; | |
180 | } | |
181 | ||
182 | if (s/\\$//) { | |
183 | $cont = 1; | |
184 | $line = $_; | |
185 | next; | |
186 | } | |
187 | ||
188 | $cont = 0; | |
189 | ||
dcc60243 SR |
190 | # collect any Kconfig sources |
191 | if (/^source\s*"(.*)"/) { | |
ced9cb1a SR |
192 | my $kconfig = $1; |
193 | # prevent reading twice. | |
194 | if (!defined($read_kconfigs{$kconfig})) { | |
195 | $read_kconfigs{$kconfig} = 1; | |
196 | read_kconfig($kconfig); | |
197 | } | |
198 | next; | |
dcc60243 SR |
199 | } |
200 | ||
201 | # configs found | |
8ef17fa2 | 202 | if (/^\s*(menu)?config\s+(\S+)\s*$/) { |
dcc60243 | 203 | $state = "NEW"; |
8ef17fa2 | 204 | $config = $2; |
dcc60243 | 205 | |
0b58a99e | 206 | # Add depends for 'if' nesting |
13d7e938 SR |
207 | for (my $i = 0; $i < $iflevel; $i++) { |
208 | if ($i) { | |
209 | $depends{$config} .= " " . $ifdeps[$i]; | |
210 | } else { | |
211 | $depends{$config} = $ifdeps[$i]; | |
212 | } | |
213 | $state = "DEP"; | |
214 | } | |
215 | ||
dcc60243 SR |
216 | # collect the depends for the config |
217 | } elsif ($state eq "NEW" && /^\s*depends\s+on\s+(.*)$/) { | |
218 | $state = "DEP"; | |
219 | $depends{$config} = $1; | |
220 | } elsif ($state eq "DEP" && /^\s*depends\s+on\s+(.*)$/) { | |
221 | $depends{$config} .= " " . $1; | |
95edca5c SRRH |
222 | } elsif ($state eq "DEP" && /^\s*def(_(bool|tristate)|ault)\s+(\S.*)$/) { |
223 | my $dep = $3; | |
224 | if ($dep !~ /^\s*(y|m|n)\s*$/) { | |
225 | $dep =~ s/.*\sif\s+//; | |
226 | $depends{$config} .= " " . $dep; | |
227 | dprint "Added default depends $dep to $config\n"; | |
228 | } | |
dcc60243 SR |
229 | |
230 | # Get the configs that select this config | |
231 | } elsif ($state ne "NONE" && /^\s*select\s+(\S+)/) { | |
0b58a99e SR |
232 | my $conf = $1; |
233 | if (defined($selects{$conf})) { | |
234 | $selects{$conf} .= " " . $config; | |
dcc60243 | 235 | } else { |
0b58a99e | 236 | $selects{$conf} = $config; |
dcc60243 SR |
237 | } |
238 | ||
239 | # configs without prompts must be selected | |
240 | } elsif ($state ne "NONE" && /^\s*tristate\s\S/) { | |
241 | # note if the config has a prompt | |
ccece60a | 242 | $prompts{$config} = 1; |
dcc60243 | 243 | |
13d7e938 SR |
244 | # Check for if statements |
245 | } elsif (/^if\s+(.*\S)\s*$/) { | |
246 | my $deps = $1; | |
247 | # remove beginning and ending non text | |
248 | $deps =~ s/^[^a-zA-Z0-9_]*//; | |
249 | $deps =~ s/[^a-zA-Z0-9_]*$//; | |
250 | ||
251 | my @deps = split /[^a-zA-Z0-9_]+/, $deps; | |
252 | ||
253 | $ifdeps[$iflevel++] = join ':', @deps; | |
254 | ||
255 | } elsif (/^endif/) { | |
256 | ||
257 | $iflevel-- if ($iflevel); | |
258 | ||
dcc60243 SR |
259 | # stop on "help" |
260 | } elsif (/^\s*help\s*$/) { | |
261 | $state = "NONE"; | |
262 | } | |
263 | } | |
e0d28694 | 264 | close($kinfile); |
dcc60243 SR |
265 | } |
266 | ||
267 | if ($kconfig) { | |
268 | read_kconfig($kconfig); | |
269 | } | |
270 | ||
0b58a99e | 271 | # Makefiles can use variables to define their dependencies |
364212fd SR |
272 | sub convert_vars { |
273 | my ($line, %vars) = @_; | |
274 | ||
275 | my $process = ""; | |
276 | ||
277 | while ($line =~ s/^(.*?)(\$\((.*?)\))//) { | |
278 | my $start = $1; | |
279 | my $variable = $2; | |
280 | my $var = $3; | |
281 | ||
282 | if (defined($vars{$var})) { | |
283 | $process .= $start . $vars{$var}; | |
284 | } else { | |
285 | $process .= $start . $variable; | |
286 | } | |
287 | } | |
288 | ||
289 | $process .= $line; | |
290 | ||
291 | return $process; | |
292 | } | |
293 | ||
dcc60243 SR |
294 | # Read all Makefiles to map the configs to the objects |
295 | foreach my $makefile (@makefiles) { | |
dcc60243 | 296 | |
d060d963 | 297 | my $line = ""; |
364212fd | 298 | my %make_vars; |
20d19047 | 299 | |
e0d28694 BP |
300 | open(my $infile, '<', $makefile) || die "Can't open $makefile"; |
301 | while (<$infile>) { | |
d060d963 SR |
302 | # if this line ends with a backslash, continue |
303 | chomp; | |
304 | if (/^(.*)\\$/) { | |
305 | $line .= $1; | |
306 | next; | |
dcc60243 | 307 | } |
d060d963 SR |
308 | |
309 | $line .= $_; | |
310 | $_ = $line; | |
311 | $line = ""; | |
312 | ||
313 | my $objs; | |
dcc60243 | 314 | |
0b58a99e | 315 | # Convert variables in a line (could define configs) |
364212fd SR |
316 | $_ = convert_vars($_, %make_vars); |
317 | ||
dcc60243 SR |
318 | # collect objects after obj-$(CONFIG_FOO_BAR) |
319 | if (/obj-\$\((CONFIG_[^\)]*)\)\s*[+:]?=\s*(.*)/) { | |
320 | $var = $1; | |
321 | $objs = $2; | |
364212fd SR |
322 | |
323 | # check if variables are set | |
324 | } elsif (/^\s*(\S+)\s*[:]?=\s*(.*\S)/) { | |
325 | $make_vars{$1} = $2; | |
dcc60243 SR |
326 | } |
327 | if (defined($objs)) { | |
dcc60243 SR |
328 | foreach my $obj (split /\s+/,$objs) { |
329 | $obj =~ s/-/_/g; | |
330 | if ($obj =~ /(.*)\.o$/) { | |
1d1d1fea | 331 | # Objects may be enabled by more than one config. |
dcc60243 SR |
332 | # Store configs in an array. |
333 | my @arr; | |
334 | ||
335 | if (defined($objects{$1})) { | |
336 | @arr = @{$objects{$1}}; | |
337 | } | |
338 | ||
339 | $arr[$#arr+1] = $var; | |
340 | ||
341 | # The objects have a hash mapping to a reference | |
342 | # of an array of configs. | |
343 | $objects{$1} = \@arr; | |
344 | } | |
345 | } | |
346 | } | |
347 | } | |
e0d28694 | 348 | close($infile); |
dcc60243 SR |
349 | } |
350 | ||
351 | my %modules; | |
e0d28694 | 352 | my $linfile; |
dcc60243 | 353 | |
615f0833 SR |
354 | if (defined($lsmod_file)) { |
355 | if ( ! -f $lsmod_file) { | |
f597a718 AL |
356 | if ( -f $ENV{'objtree'}."/".$lsmod_file) { |
357 | $lsmod_file = $ENV{'objtree'}."/".$lsmod_file; | |
358 | } else { | |
359 | die "$lsmod_file not found"; | |
360 | } | |
615f0833 | 361 | } |
e0d28694 BP |
362 | |
363 | my $otype = ( -x $lsmod_file) ? '-|' : '<'; | |
364 | open($linfile, $otype, $lsmod_file); | |
365 | ||
615f0833 SR |
366 | } else { |
367 | ||
368 | # see what modules are loaded on this system | |
369 | my $lsmod; | |
370 | ||
cf5a189d | 371 | foreach my $dir ( ("/sbin", "/bin", "/usr/sbin", "/usr/bin") ) { |
615f0833 SR |
372 | if ( -x "$dir/lsmod" ) { |
373 | $lsmod = "$dir/lsmod"; | |
374 | last; | |
375 | } | |
88f66ea9 | 376 | } |
615f0833 SR |
377 | if (!defined($lsmod)) { |
378 | # try just the path | |
379 | $lsmod = "lsmod"; | |
380 | } | |
381 | ||
e0d28694 | 382 | open($linfile, '-|', $lsmod) || die "Can not call lsmod with $lsmod"; |
88f66ea9 SR |
383 | } |
384 | ||
e0d28694 | 385 | while (<$linfile>) { |
dcc60243 SR |
386 | next if (/^Module/); # Skip the first line. |
387 | if (/^(\S+)/) { | |
388 | $modules{$1} = 1; | |
389 | } | |
390 | } | |
e0d28694 | 391 | close ($linfile); |
dcc60243 SR |
392 | |
393 | # add to the configs hash all configs that are needed to enable | |
0b58a99e SR |
394 | # a loaded module. This is a direct obj-${CONFIG_FOO} += bar.o |
395 | # where we know we need bar.o so we add FOO to the list. | |
dcc60243 SR |
396 | my %configs; |
397 | foreach my $module (keys(%modules)) { | |
398 | if (defined($objects{$module})) { | |
e5199edb | 399 | my @arr = @{$objects{$module}}; |
dcc60243 SR |
400 | foreach my $conf (@arr) { |
401 | $configs{$conf} = $module; | |
4503379c | 402 | dprint "$conf added by direct ($module)\n"; |
bc20d12e SR |
403 | if ($debugprint) { |
404 | my $c=$conf; | |
405 | $c =~ s/^CONFIG_//; | |
406 | if (defined($depends{$c})) { | |
407 | dprint " deps = $depends{$c}\n"; | |
408 | } else { | |
409 | dprint " no deps\n"; | |
410 | } | |
411 | } | |
dcc60243 SR |
412 | } |
413 | } else { | |
414 | # Most likely, someone has a custom (binary?) module loaded. | |
415 | print STDERR "$module config not found!!\n"; | |
416 | } | |
417 | } | |
418 | ||
4f4c51c9 SR |
419 | # Read the current config, and see what is enabled. We want to |
420 | # ignore configs that we would not enable anyway. | |
421 | ||
422 | my %orig_configs; | |
dcc60243 | 423 | my $valid = "A-Za-z_0-9"; |
4f4c51c9 SR |
424 | |
425 | foreach my $line (@config_file) { | |
426 | $_ = $line; | |
427 | ||
428 | if (/(CONFIG_[$valid]*)=(m|y)/) { | |
429 | $orig_configs{$1} = $2; | |
430 | } | |
431 | } | |
432 | ||
dcc60243 SR |
433 | my $repeat = 1; |
434 | ||
4503379c SR |
435 | my $depconfig; |
436 | ||
dcc60243 SR |
437 | # |
438 | # Note, we do not care about operands (like: &&, ||, !) we want to add any | |
439 | # config that is in the depend list of another config. This script does | |
440 | # not enable configs that are not already enabled. If we come across a | |
441 | # config A that depends on !B, we can still add B to the list of depends | |
442 | # to keep on. If A was on in the original config, B would not have been | |
443 | # and B would not be turned on by this script. | |
444 | # | |
d4bb58b5 | 445 | sub parse_config_depends |
dcc60243 SR |
446 | { |
447 | my ($p) = @_; | |
448 | ||
449 | while ($p =~ /[$valid]/) { | |
450 | ||
451 | if ($p =~ /^[^$valid]*([$valid]+)/) { | |
452 | my $conf = "CONFIG_" . $1; | |
453 | ||
454 | $p =~ s/^[^$valid]*[$valid]+//; | |
455 | ||
4f4c51c9 SR |
456 | # We only need to process if the depend config is a module |
457 | if (!defined($orig_configs{$conf}) || !$orig_configs{conf} eq "m") { | |
458 | next; | |
459 | } | |
460 | ||
dcc60243 SR |
461 | if (!defined($configs{$conf})) { |
462 | # We must make sure that this config has its | |
463 | # dependencies met. | |
464 | $repeat = 1; # do again | |
4503379c | 465 | dprint "$conf selected by depend $depconfig\n"; |
dcc60243 SR |
466 | $configs{$conf} = 1; |
467 | } | |
468 | } else { | |
469 | die "this should never happen"; | |
470 | } | |
471 | } | |
472 | } | |
473 | ||
d4bb58b5 SR |
474 | # Select is treated a bit differently than depends. We call this |
475 | # when a config has no prompt and requires another config to be | |
476 | # selected. We use to just select all configs that selected this | |
477 | # config, but found that that can balloon into enabling hundreds | |
478 | # of configs that we do not care about. | |
479 | # | |
480 | # The idea is we look at all the configs that select it. If one | |
481 | # is already in our list of configs to enable, then there's nothing | |
482 | # else to do. If there isn't, we pick the first config that was | |
483 | # enabled in the orignal config and use that. | |
484 | sub parse_config_selects | |
485 | { | |
486 | my ($config, $p) = @_; | |
dcc60243 | 487 | |
d4bb58b5 SR |
488 | my $next_config; |
489 | ||
490 | while ($p =~ /[$valid]/) { | |
491 | ||
492 | if ($p =~ /^[^$valid]*([$valid]+)/) { | |
493 | my $conf = "CONFIG_" . $1; | |
494 | ||
495 | $p =~ s/^[^$valid]*[$valid]+//; | |
dcc60243 | 496 | |
d4bb58b5 SR |
497 | # Make sure that this config exists in the current .config file |
498 | if (!defined($orig_configs{$conf})) { | |
4503379c | 499 | dprint "$conf not set for $config select\n"; |
d4bb58b5 SR |
500 | next; |
501 | } | |
502 | ||
503 | # Check if something other than a module selects this config | |
504 | if (defined($orig_configs{$conf}) && $orig_configs{$conf} ne "m") { | |
4503379c | 505 | dprint "$conf (non module) selects config, we are good\n"; |
d4bb58b5 SR |
506 | # we are good with this |
507 | return; | |
508 | } | |
509 | if (defined($configs{$conf})) { | |
4503379c | 510 | dprint "$conf selects $config so we are good\n"; |
d4bb58b5 SR |
511 | # A set config selects this config, we are good |
512 | return; | |
513 | } | |
514 | # Set this config to be selected | |
515 | if (!defined($next_config)) { | |
516 | $next_config = $conf; | |
517 | } | |
518 | } else { | |
519 | die "this should never happen"; | |
dcc60243 | 520 | } |
d4bb58b5 | 521 | } |
dcc60243 | 522 | |
d4bb58b5 SR |
523 | # If no possible config selected this, then something happened. |
524 | if (!defined($next_config)) { | |
525 | print STDERR "WARNING: $config is required, but nothing in the\n"; | |
526 | print STDERR " current config selects it.\n"; | |
527 | return; | |
528 | } | |
529 | ||
530 | # If we are here, then we found no config that is set and | |
531 | # selects this config. Repeat. | |
532 | $repeat = 1; | |
533 | # Make this config need to be selected | |
534 | $configs{$next_config} = 1; | |
4503379c | 535 | dprint "$next_config selected by select $config\n"; |
d4bb58b5 SR |
536 | } |
537 | ||
538 | my %process_selects; | |
539 | ||
540 | # loop through all configs, select their dependencies. | |
541 | sub loop_depend { | |
542 | $repeat = 1; | |
543 | ||
544 | while ($repeat) { | |
545 | $repeat = 0; | |
546 | ||
547 | forloop: | |
548 | foreach my $config (keys %configs) { | |
549 | ||
550 | # If this config is not a module, we do not need to process it | |
551 | if (defined($orig_configs{$config}) && $orig_configs{$config} ne "m") { | |
552 | next forloop; | |
553 | } | |
554 | ||
555 | $config =~ s/^CONFIG_//; | |
4503379c | 556 | $depconfig = $config; |
d4bb58b5 SR |
557 | |
558 | if (defined($depends{$config})) { | |
559 | # This config has dependencies. Make sure they are also included | |
560 | parse_config_depends $depends{$config}; | |
561 | } | |
562 | ||
563 | # If the config has no prompt, then we need to check if a config | |
564 | # that is enabled selected it. Or if we need to enable one. | |
565 | if (!defined($prompts{$config}) && defined($selects{$config})) { | |
566 | $process_selects{$config} = 1; | |
567 | } | |
dcc60243 | 568 | } |
d4bb58b5 SR |
569 | } |
570 | } | |
571 | ||
572 | sub loop_select { | |
573 | ||
574 | foreach my $config (keys %process_selects) { | |
575 | $config =~ s/^CONFIG_//; | |
dcc60243 | 576 | |
4503379c SR |
577 | dprint "Process select $config\n"; |
578 | ||
dcc60243 | 579 | # config has no prompt and must be selected. |
d4bb58b5 | 580 | parse_config_selects $config, $selects{$config}; |
dcc60243 SR |
581 | } |
582 | } | |
583 | ||
d4bb58b5 SR |
584 | while ($repeat) { |
585 | # Get the first set of configs and their dependencies. | |
586 | loop_depend; | |
587 | ||
588 | $repeat = 0; | |
589 | ||
590 | # Now we need to see if we have to check selects; | |
591 | loop_select; | |
38385f8f | 592 | } |
d4bb58b5 | 593 | |
dcc60243 SR |
594 | my %setconfigs; |
595 | ||
596 | # Finally, read the .config file and turn off any module enabled that | |
597 | # we could not find a reason to keep enabled. | |
4f4c51c9 SR |
598 | foreach my $line (@config_file) { |
599 | $_ = $line; | |
744ffcbe SR |
600 | |
601 | if (/CONFIG_IKCONFIG/) { | |
602 | if (/# CONFIG_IKCONFIG is not set/) { | |
603 | # enable IKCONFIG at least as a module | |
604 | print "CONFIG_IKCONFIG=m\n"; | |
605 | # don't ask about PROC | |
d08ca277 | 606 | print "# CONFIG_IKCONFIG_PROC is not set\n"; |
744ffcbe SR |
607 | } else { |
608 | print; | |
609 | } | |
610 | next; | |
611 | } | |
612 | ||
613 | if (/^(CONFIG.*)=(m|y)/) { | |
614 | if (defined($configs{$1})) { | |
22d550ae AL |
615 | if ($localyesconfig) { |
616 | $setconfigs{$1} = 'y'; | |
4eae518d YA |
617 | print "$1=y\n"; |
618 | next; | |
22d550ae AL |
619 | } else { |
620 | $setconfigs{$1} = $2; | |
621 | } | |
744ffcbe SR |
622 | } elsif ($2 eq "m") { |
623 | print "# $1 is not set\n"; | |
d08ca277 | 624 | next; |
dcc60243 | 625 | } |
744ffcbe | 626 | } |
d08ca277 | 627 | print; |
dcc60243 | 628 | } |
dcc60243 SR |
629 | |
630 | # Integrity check, make sure all modules that we want enabled do | |
631 | # indeed have their configs set. | |
632 | loop: | |
633 | foreach my $module (keys(%modules)) { | |
634 | if (defined($objects{$module})) { | |
635 | my @arr = @{$objects{$module}}; | |
636 | foreach my $conf (@arr) { | |
637 | if (defined($setconfigs{$conf})) { | |
638 | next loop; | |
639 | } | |
640 | } | |
641 | print STDERR "module $module did not have configs"; | |
642 | foreach my $conf (@arr) { | |
643 | print STDERR " " , $conf; | |
644 | } | |
645 | print STDERR "\n"; | |
646 | } | |
647 | } |