mdw@git.distorted.org.uk Git - dpkg/blob - scripts/dpkg-architecture.pl

   1 #!/usr/bin/perl
   2 #
   3 # dpkg-architecture
   4 #
   5 # Copyright © 1999-2001 Marcus Brinkmann <brinkmd@debian.org>
   6 # Copyright © 2004-2005 Scott James Remnant <scott@netsplit.com>,
   7 # Copyright © 2006-2014 Guillem Jover <guillem@debian.org>
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  21
  22 use strict;
  23 use warnings;
  24
  25 use Dpkg ();
  26 use Dpkg::Gettext;
  27 use Dpkg::Getopt;
  28 use Dpkg::ErrorHandling;
  29 use Dpkg::Arch qw(:getters :mappers debarch_eq debarch_is);
  30
  31 textdomain('dpkg-dev');
  32
  33 sub version {
  34     printf g_("Debian %s version %s.\n"), $Dpkg::PROGNAME, $Dpkg::PROGVERSION;
  35
  36     printf g_('
  37 This is free software; see the GNU General Public License version 2 or
  38 later for copying conditions. There is NO warranty.
  39 ');
  40 }
  41
  42 sub usage {
  43     printf g_(
  44 'Usage: %s [<option>...] [<command>]')
  45     . "\n\n" . g_(
  46 'Commands:
  47   -l, --list                list variables (default).
  48   -L, --list-known          list valid architectures (matching some criteria).
  49   -e, --equal <arch>        compare with host Debian architecture.
  50   -i, --is <arch-wildcard>  match against host Debian architecture.
  51   -q, --query <variable>    prints only the value of <variable>.
  52   -s, --print-set           print command to set environment variables.
  53   -u, --print-unset         print command to unset environment variables.
  54   -c, --command <command>   set environment and run the command in it.
  55   -?, --help                show this help message.
  56       --version             show the version.')
  57     . "\n\n" . g_(
  58 'Options:
  59   -a, --host-arch <arch>    set host Debian architecture.
  60   -t, --host-type <type>    set host GNU system type.
  61   -A, --target-arch <arch>  set target Debian architecture.
  62   -T, --target-type <type>  set target GNU system type.
  63   -W, --match-wildcard <arch-wildcard>
  64                             restrict architecture list matching <arch-wildcard>.
  65   -B, --match-bits <arch-bits>
  66                             restrict architecture list matching <arch-bits>.
  67   -E, --match-endian <arch-endian>
  68                             restrict architecture list matching <arch-endian>.
  69   -f, --force               force flag (override variables set in environment).')
  70     . "\n", $Dpkg::PROGNAME;
  71 }
  72
  73 sub check_arch_coherency
  74 {
  75     my ($arch, $gnu_type) = @_;
  76
  77     if ($arch ne '' && $gnu_type eq '') {
  78         $gnu_type = debarch_to_gnutriplet($arch);
  79         error(g_('unknown Debian architecture %s, you must specify ' .
  80                  'GNU system type, too'), $arch)
  81             unless defined $gnu_type;
  82     }
  83
  84     if ($gnu_type ne '' && $arch eq '') {
  85         $arch = gnutriplet_to_debarch($gnu_type);
  86         error(g_('unknown GNU system type %s, you must specify ' .
  87                  'Debian architecture, too'), $gnu_type)
  88             unless defined $arch;
  89     }
  90
  91     if ($gnu_type ne '' && $arch ne '') {
  92         my $dfl_gnu_type = debarch_to_gnutriplet($arch);
  93         error(g_('unknown default GNU system type for Debian architecture %s'),
  94               $arch)
  95             unless defined $dfl_gnu_type;
  96         warning(g_('default GNU system type %s for Debian arch %s does not ' .
  97                    'match specified GNU system type %s'), $dfl_gnu_type,
  98                 $arch, $gnu_type)
  99             if $dfl_gnu_type ne $gnu_type;
 100     }
 101
 102     return ($arch, $gnu_type);
 103 }
 104
 105 use constant {
 106     DEB_NONE => 0,
 107     DEB_BUILD => 1,
 108     DEB_HOST => 2,
 109     DEB_TARGET => 64,
 110     DEB_ARCH_INFO => 4,
 111     DEB_ARCH_ATTR => 8,
 112     DEB_MULTIARCH => 16,
 113     DEB_GNU_INFO => 32,
 114 };
 115
 116 use constant DEB_ALL => DEB_BUILD | DEB_HOST | DEB_TARGET |
 117                         DEB_ARCH_INFO | DEB_ARCH_ATTR |
 118                         DEB_MULTIARCH | DEB_GNU_INFO;
 119
 120 my %arch_vars = (
 121     DEB_BUILD_ARCH => DEB_BUILD,
 122     DEB_BUILD_ARCH_ABI => DEB_BUILD | DEB_ARCH_INFO,
 123     DEB_BUILD_ARCH_LIBC => DEB_BUILD | DEB_ARCH_INFO,
 124     DEB_BUILD_ARCH_OS => DEB_BUILD | DEB_ARCH_INFO,
 125     DEB_BUILD_ARCH_CPU => DEB_BUILD | DEB_ARCH_INFO,
 126     DEB_BUILD_ARCH_BITS => DEB_BUILD | DEB_ARCH_ATTR,
 127     DEB_BUILD_ARCH_ENDIAN => DEB_BUILD | DEB_ARCH_ATTR,
 128     DEB_BUILD_MULTIARCH => DEB_BUILD | DEB_MULTIARCH,
 129     DEB_BUILD_GNU_CPU => DEB_BUILD | DEB_GNU_INFO,
 130     DEB_BUILD_GNU_SYSTEM => DEB_BUILD | DEB_GNU_INFO,
 131     DEB_BUILD_GNU_TYPE => DEB_BUILD | DEB_GNU_INFO,
 132     DEB_HOST_ARCH => DEB_HOST,
 133     DEB_HOST_ARCH_ABI => DEB_HOST | DEB_ARCH_INFO,
 134     DEB_HOST_ARCH_LIBC => DEB_HOST | DEB_ARCH_INFO,
 135     DEB_HOST_ARCH_OS => DEB_HOST | DEB_ARCH_INFO,
 136     DEB_HOST_ARCH_CPU => DEB_HOST | DEB_ARCH_INFO,
 137     DEB_HOST_ARCH_BITS => DEB_HOST | DEB_ARCH_ATTR,
 138     DEB_HOST_ARCH_ENDIAN => DEB_HOST | DEB_ARCH_ATTR,
 139     DEB_HOST_MULTIARCH => DEB_HOST | DEB_MULTIARCH,
 140     DEB_HOST_GNU_CPU => DEB_HOST | DEB_GNU_INFO,
 141     DEB_HOST_GNU_SYSTEM => DEB_HOST | DEB_GNU_INFO,
 142     DEB_HOST_GNU_TYPE => DEB_HOST | DEB_GNU_INFO,
 143     DEB_TARGET_ARCH => DEB_TARGET,
 144     DEB_TARGET_ARCH_ABI => DEB_TARGET | DEB_ARCH_INFO,
 145     DEB_TARGET_ARCH_LIBC => DEB_TARGET | DEB_ARCH_INFO,
 146     DEB_TARGET_ARCH_OS => DEB_TARGET | DEB_ARCH_INFO,
 147     DEB_TARGET_ARCH_CPU => DEB_TARGET | DEB_ARCH_INFO,
 148     DEB_TARGET_ARCH_BITS => DEB_TARGET | DEB_ARCH_ATTR,
 149     DEB_TARGET_ARCH_ENDIAN => DEB_TARGET | DEB_ARCH_ATTR,
 150     DEB_TARGET_MULTIARCH => DEB_TARGET | DEB_MULTIARCH,
 151     DEB_TARGET_GNU_CPU => DEB_TARGET | DEB_GNU_INFO,
 152     DEB_TARGET_GNU_SYSTEM => DEB_TARGET | DEB_GNU_INFO,
 153     DEB_TARGET_GNU_TYPE => DEB_TARGET | DEB_GNU_INFO,
 154 );
 155
 156 my $req_vars = DEB_ALL;
 157 my $req_host_arch = '';
 158 my $req_host_gnu_type = '';
 159 my $req_target_arch = '';
 160 my $req_target_gnu_type = '';
 161 my $req_eq_arch = '';
 162 my $req_is_arch = '';
 163 my $req_match_wildcard = '';
 164 my $req_match_bits = '';
 165 my $req_match_endian = '';
 166 my $req_variable_to_print;
 167 my $action = 'list';
 168 my $force = 0;
 169
 170 sub action_needs($) {
 171   my $bits = shift;
 172   return (($req_vars & $bits) == $bits);
 173 }
 174
 175 @ARGV = normalize_options(args => \@ARGV, delim => '-c');
 176
 177 while (@ARGV) {
 178     my $arg = shift;
 179
 180     if ($arg eq '-a' or $arg eq '--host-arch') {
 181         $req_host_arch = shift;
 182     } elsif ($arg eq '-t' or $arg eq '--host-type') {
 183         $req_host_gnu_type = shift;
 184     } elsif ($arg eq '-A' or $arg eq '--target-arch') {
 185         $req_target_arch = shift;
 186     } elsif ($arg eq '-T' or $arg eq '--target-type') {
 187         $req_target_gnu_type = shift;
 188     } elsif ($arg eq '-W' or $arg eq '--match-wildcard') {
 189         $req_match_wildcard = shift;
 190     } elsif ($arg eq '-B' or $arg eq '--match-bits') {
 191         $req_match_bits = shift;
 192     } elsif ($arg eq '-E' or $arg eq '--match-endian') {
 193         $req_match_endian = shift;
 194     } elsif ($arg eq '-e' or $arg eq '--equal') {
 195         $req_eq_arch = shift;
 196         $req_vars = $arch_vars{DEB_HOST_ARCH};
 197         $action = 'equal';
 198     } elsif ($arg eq '-i' or $arg eq '--is') {
 199         $req_is_arch = shift;
 200         $req_vars = $arch_vars{DEB_HOST_ARCH};
 201         $action = 'is';
 202     } elsif ($arg eq '-u' or $arg eq '--print-unset') {
 203         $req_vars = DEB_NONE;
 204         $action = 'print-unset';
 205     } elsif ($arg eq '-l' or $arg eq '--list') {
 206         $action = 'list';
 207     } elsif ($arg eq '-s' or $arg eq '--print-set') {
 208         $req_vars = DEB_ALL;
 209         $action = 'print-set';
 210     } elsif ($arg eq '-f' or $arg eq '--force') {
 211         $force=1;
 212     } elsif ($arg eq '-q' or $arg eq '--query') {
 213         my $varname = shift;
 214         error(g_('%s is not a supported variable name'), $varname)
 215             unless (exists $arch_vars{$varname});
 216         $req_variable_to_print = "$varname";
 217         $req_vars = $arch_vars{$varname};
 218         $action = 'query';
 219     } elsif ($arg eq '-c' or $arg eq '--command') {
 220        $action = 'command';
 221        last;
 222     } elsif ($arg eq '-L' or $arg eq '--list-known') {
 223         $req_vars = 0;
 224         $action = 'list-known';
 225     } elsif ($arg eq '-?' or $arg eq '--help') {
 226         usage();
 227        exit 0;
 228     } elsif ($arg eq '--version') {
 229         version();
 230        exit 0;
 231     } else {
 232         usageerr(g_("unknown option '%s'"), $arg);
 233     }
 234 }
 235
 236 my %v;
 237
 238 #
 239 # Set build variables
 240 #
 241
 242 $v{DEB_BUILD_ARCH} = get_raw_build_arch()
 243     if (action_needs(DEB_BUILD));
 244 ($v{DEB_BUILD_ARCH_ABI}, $v{DEB_BUILD_ARCH_LIBC},
 245  $v{DEB_BUILD_ARCH_OS}, $v{DEB_BUILD_ARCH_CPU}) = debarch_to_debtuple($v{DEB_BUILD_ARCH})
 246     if (action_needs(DEB_BUILD | DEB_ARCH_INFO));
 247 ($v{DEB_BUILD_ARCH_BITS}, $v{DEB_BUILD_ARCH_ENDIAN}) = debarch_to_cpuattrs($v{DEB_BUILD_ARCH})
 248     if (action_needs(DEB_BUILD | DEB_ARCH_ATTR));
 249
 250 $v{DEB_BUILD_MULTIARCH} = debarch_to_multiarch($v{DEB_BUILD_ARCH})
 251     if (action_needs(DEB_BUILD | DEB_MULTIARCH));
 252
 253 if (action_needs(DEB_BUILD | DEB_GNU_INFO)) {
 254   $v{DEB_BUILD_GNU_TYPE} = debarch_to_gnutriplet($v{DEB_BUILD_ARCH});
 255   ($v{DEB_BUILD_GNU_CPU}, $v{DEB_BUILD_GNU_SYSTEM}) = split(/-/, $v{DEB_BUILD_GNU_TYPE}, 2);
 256 }
 257
 258 #
 259 # Set host variables
 260 #
 261
 262 # First perform some sanity checks on the host arguments passed.
 263
 264 ($req_host_arch, $req_host_gnu_type) = check_arch_coherency($req_host_arch, $req_host_gnu_type);
 265
 266 # Proceed to compute the host variables if needed.
 267
 268 $v{DEB_HOST_ARCH} = $req_host_arch || get_raw_host_arch()
 269     if (action_needs(DEB_HOST));
 270 ($v{DEB_HOST_ARCH_ABI}, $v{DEB_HOST_ARCH_LIBC},
 271  $v{DEB_HOST_ARCH_OS}, $v{DEB_HOST_ARCH_CPU}) = debarch_to_debtuple($v{DEB_HOST_ARCH})
 272     if (action_needs(DEB_HOST | DEB_ARCH_INFO));
 273 ($v{DEB_HOST_ARCH_BITS}, $v{DEB_HOST_ARCH_ENDIAN}) = debarch_to_cpuattrs($v{DEB_HOST_ARCH})
 274     if (action_needs(DEB_HOST | DEB_ARCH_ATTR));
 275
 276 $v{DEB_HOST_MULTIARCH} = debarch_to_multiarch($v{DEB_HOST_ARCH})
 277     if (action_needs(DEB_HOST | DEB_MULTIARCH));
 278
 279 if (action_needs(DEB_HOST | DEB_GNU_INFO)) {
 280     if ($req_host_gnu_type eq '') {
 281         $v{DEB_HOST_GNU_TYPE} = debarch_to_gnutriplet($v{DEB_HOST_ARCH});
 282     } else {
 283         $v{DEB_HOST_GNU_TYPE} = $req_host_gnu_type;
 284     }
 285     ($v{DEB_HOST_GNU_CPU}, $v{DEB_HOST_GNU_SYSTEM}) = split(/-/, $v{DEB_HOST_GNU_TYPE}, 2);
 286
 287     my $host_gnu_type = get_host_gnu_type();
 288
 289     warning(g_('specified GNU system type %s does not match CC system ' .
 290                'type %s, try setting a correct CC environment variable'),
 291             $v{DEB_HOST_GNU_TYPE}, $host_gnu_type)
 292         if ($host_gnu_type ne '') && ($host_gnu_type ne $v{DEB_HOST_GNU_TYPE});
 293 }
 294
 295 #
 296 # Set target variables
 297 #
 298
 299 # First perform some sanity checks on the target arguments passed.
 300
 301 ($req_target_arch, $req_target_gnu_type) = check_arch_coherency($req_target_arch, $req_target_gnu_type);
 302
 303 # Proceed to compute the target variables if needed.
 304
 305 $v{DEB_TARGET_ARCH} = $req_target_arch || $req_host_arch || get_raw_host_arch()
 306     if (action_needs(DEB_TARGET));
 307 ($v{DEB_TARGET_ARCH_ABI}, $v{DEB_TARGET_ARCH_LIBC},
 308  $v{DEB_TARGET_ARCH_OS}, $v{DEB_TARGET_ARCH_CPU}) = debarch_to_debtuple($v{DEB_TARGET_ARCH})
 309     if (action_needs(DEB_TARGET | DEB_ARCH_INFO));
 310 ($v{DEB_TARGET_ARCH_BITS}, $v{DEB_TARGET_ARCH_ENDIAN}) = debarch_to_cpuattrs($v{DEB_TARGET_ARCH})
 311     if (action_needs(DEB_TARGET | DEB_ARCH_ATTR));
 312
 313 $v{DEB_TARGET_MULTIARCH} = debarch_to_multiarch($v{DEB_TARGET_ARCH})
 314     if (action_needs(DEB_TARGET | DEB_MULTIARCH));
 315
 316 if (action_needs(DEB_TARGET | DEB_GNU_INFO)) {
 317     if ($req_target_gnu_type eq '') {
 318         $v{DEB_TARGET_GNU_TYPE} = debarch_to_gnutriplet($v{DEB_TARGET_ARCH});
 319     } else {
 320         $v{DEB_TARGET_GNU_TYPE} = $req_target_gnu_type;
 321     }
 322     ($v{DEB_TARGET_GNU_CPU}, $v{DEB_TARGET_GNU_SYSTEM}) = split(/-/, $v{DEB_TARGET_GNU_TYPE}, 2);
 323 }
 324
 325
 326 for my $k (keys %arch_vars) {
 327     $v{$k} = $ENV{$k} if (length $ENV{$k} && !$force);
 328 }
 329
 330 if ($action eq 'list') {
 331     foreach my $k (sort keys %arch_vars) {
 332         print "$k=$v{$k}\n";
 333     }
 334 } elsif ($action eq 'print-set') {
 335     foreach my $k (sort keys %arch_vars) {
 336         print "$k=$v{$k}; ";
 337     }
 338     print 'export ' . join(' ', sort keys %arch_vars) . "\n";
 339 } elsif ($action eq 'print-unset') {
 340     print 'unset ' . join(' ', sort keys %arch_vars) . "\n";
 341 } elsif ($action eq 'equal') {
 342     exit !debarch_eq($v{DEB_HOST_ARCH}, $req_eq_arch);
 343 } elsif ($action eq 'is') {
 344     exit !debarch_is($v{DEB_HOST_ARCH}, $req_is_arch);
 345 } elsif ($action eq 'command') {
 346     @ENV{keys %v} = values %v;
 347     exec @ARGV;
 348 } elsif ($action eq 'query') {
 349     print "$v{$req_variable_to_print}\n";
 350 } elsif ($action eq 'list-known') {
 351     foreach my $arch (get_valid_arches()) {
 352         my ($bits, $endian) = debarch_to_cpuattrs($arch);
 353
 354         next if $req_match_endian and $endian ne $req_match_endian;
 355         next if $req_match_bits and $bits ne $req_match_bits;
 356         next if $req_match_wildcard and not debarch_is($arch, $req_match_wildcard);
 357
 358         print "$arch\n";
 359     }
 360 }