scripts/gen_busybox_menuconfig.pl

   1 #!/usr/bin/perl
   2 use strict;
   3 my $PATH = $ARGV[0];
   4 ($PATH and -d $PATH) or die 'invalid path';
   5 my $DEFCONFIG = $ARGV[1];
   6 ($DEFCONFIG and -f $DEFCONFIG) or die 'invalid config file';
   7
   8 my %config;
   9
  10 open CONFIG, $DEFCONFIG or die 'cannot open config file';
  11 while (<CONFIG>) {
  12         /^([\w_]+)=([ym])/ and $config{$1} = $2;
  13         /^([\w_]+)=(\d+)/ and $config{$1} = $2;
  14         /^([\w_]+)=(".+")/ and $config{$1} = $2;
  15 }
  16 close CONFIG;
  17
  18 open FIND, "find \"$PATH\" -name Config.in |";
  19 while (<FIND>) {
  20         chomp;
  21         my $input = $_;
  22         s/^$PATH\///g;
  23         s/sysdeps\/linux\///g;
  24         my $output = $_;
  25         print STDERR "$input => $output\n";
  26         $output =~ /^(.+)\/[^\/]+$/ and system("mkdir -p $1");
  27
  28         open INPUT, $input;
  29         open OUTPUT, ">$output";
  30         my ($cur, $default_set, $line);
  31         while ($line = <INPUT>) {
  32                 next if $line =~ /^\s*mainmenu/;
  33
  34                 # FIXME: make this dynamic
  35                 $line =~ s/default CONFIG_FEATURE_BUFFERS_USE_MALLOC/default CONFIG_FEATURE_BUFFERS_GO_ON_STACK/;
  36                 $line =~ s/default BUSYBOX_CONFIG_FEATURE_SH_IS_NONE/default BUSYBOX_CONFIG_FEATURE_SH_IS_ASH/;
  37
  38                 if ($line =~ /^\s*config\s*([\w_]+)/) {
  39                         $cur = $1;
  40                         undef $default_set;
  41                 }
  42                 if ($line =~ /^\s*(menu|choice|end|source)/) {
  43                         undef $cur;
  44                         undef $default_set;
  45                 }
  46                 $line =~ s/^(\s*source\s+)/$1package\/busybox\/config\//;
  47
  48                 $line =~ s/(\s+)((CONFIG|FDISK|USING|CROSS|EXTRA|PREFIX|FEATURE|HAVE|BUSYBOX)[\w_]*)/$1BUSYBOX_$2/g;
  49
  50                 if ($cur) {
  51                         ($cur !~ /^CONFIG/ or $cur eq 'CONFIG_LFS') and do {
  52                                 $line =~ s/^(\s*(bool|tristate|string))\s*".+"$/$1/;
  53                         };
  54                         if ($line =~ /^\s*default/) {
  55                                 my $c;
  56                                 $default_set = 1;
  57                                 $c = $config{$cur} or $c = 'n';
  58
  59                                 $line =~ s/^(\s*default\s*)(\w+|"[^"]*")(.*)/$1$c$3/;
  60                         }
  61                 }
  62
  63                 print OUTPUT $line;
  64         }
  65         close OUTPUT;
  66         close INPUT;
  67
  68 }
  69 close FIND;