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#!/usr/bin/perl
#
# dpkg-architecture
#
# Copyright © 1999-2001 Marcus Brinkmann <brinkmd@debian.org>
# Copyright © 2004-2005 Scott James Remnant <scott@netsplit.com>,
# Copyright © 2006-2012 Guillem Jover <guillem@debian.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
use strict;
use warnings;
use Dpkg ();
use Dpkg::Gettext;
use Dpkg::ErrorHandling;
use Dpkg::Arch qw(get_raw_build_arch get_raw_host_arch get_gcc_host_gnu_type
debarch_to_cpuattrs
get_valid_arches debarch_eq debarch_is debarch_to_debtriplet
debarch_to_gnutriplet gnutriplet_to_debarch
debarch_to_multiarch);
textdomain('dpkg-dev');
sub version {
printf _g("Debian %s version %s.\n"), $Dpkg::PROGNAME, $Dpkg::PROGVERSION;
printf _g('
This is free software; see the GNU General Public License version 2 or
later for copying conditions. There is NO warranty.
');
}
sub usage {
printf _g(
'Usage: %s [<option>...] [<command>]')
. "\n\n" . _g(
'Options:
-a<debian-arch> set current Debian architecture.
-t<gnu-system> set current GNU system type.
-L list valid architectures.
-f force flag (override variables set in environment).')
. "\n\n" . _g(
'Commands:
-l list variables (default).
-e<debian-arch> compare with current Debian architecture.
-i<arch-alias> check if current Debian architecture is <arch-alias>.
-q<variable> prints only the value of <variable>.
-s print command to set environment variables.
-u print command to unset environment variables.
-c <command> set environment and run the command in it.
-?, --help show this help message.
--version show the version.
'), $Dpkg::PROGNAME;
}
sub list_arches()
{
foreach my $arch (get_valid_arches()) {
print "$arch\n";
}
}
use constant {
DEB_NONE => 0,
DEB_BUILD => 1,
DEB_HOST => 2,
DEB_ARCH_INFO => 4,
DEB_ARCH_ATTR => 8,
DEB_MULTIARCH => 16,
DEB_GNU_INFO => 32,
};
use constant DEB_ALL => DEB_BUILD | DEB_HOST | DEB_ARCH_INFO | DEB_ARCH_ATTR |
DEB_MULTIARCH | DEB_GNU_INFO;
my %arch_vars = (
DEB_BUILD_ARCH => DEB_BUILD,
DEB_BUILD_ARCH_OS => DEB_BUILD | DEB_ARCH_INFO,
DEB_BUILD_ARCH_CPU => DEB_BUILD | DEB_ARCH_INFO,
DEB_BUILD_ARCH_BITS => DEB_BUILD | DEB_ARCH_ATTR,
DEB_BUILD_ARCH_ENDIAN => DEB_BUILD | DEB_ARCH_ATTR,
DEB_BUILD_MULTIARCH => DEB_BUILD | DEB_MULTIARCH,
DEB_BUILD_GNU_CPU => DEB_BUILD | DEB_GNU_INFO,
DEB_BUILD_GNU_SYSTEM => DEB_BUILD | DEB_GNU_INFO,
DEB_BUILD_GNU_TYPE => DEB_BUILD | DEB_GNU_INFO,
DEB_HOST_ARCH => DEB_HOST,
DEB_HOST_ARCH_OS => DEB_HOST | DEB_ARCH_INFO,
DEB_HOST_ARCH_CPU => DEB_HOST | DEB_ARCH_INFO,
DEB_HOST_ARCH_BITS => DEB_HOST | DEB_ARCH_ATTR,
DEB_HOST_ARCH_ENDIAN => DEB_HOST | DEB_ARCH_ATTR,
DEB_HOST_MULTIARCH => DEB_HOST | DEB_MULTIARCH,
DEB_HOST_GNU_CPU => DEB_HOST | DEB_GNU_INFO,
DEB_HOST_GNU_SYSTEM => DEB_HOST | DEB_GNU_INFO,
DEB_HOST_GNU_TYPE => DEB_HOST | DEB_GNU_INFO,
);
my $req_vars = DEB_ALL;
my $req_host_arch = '';
my $req_host_gnu_type = '';
my $req_eq_arch = '';
my $req_is_arch = '';
my $req_variable_to_print;
my $action = 'l';
my $force = 0;
sub action_needs($) {
my ($bits) = @_;
return (($req_vars & $bits) == $bits);
}
while (@ARGV) {
$_=shift(@ARGV);
if (m/^-a/) {
$req_host_arch = "$'";
} elsif (m/^-t/) {
$req_host_gnu_type = "$'";
} elsif (m/^-e/) {
$req_eq_arch = "$'";
$req_vars = $arch_vars{DEB_HOST_ARCH};
$action = 'e';
} elsif (m/^-i/) {
$req_is_arch = "$'";
$req_vars = $arch_vars{DEB_HOST_ARCH};
$action = 'i';
} elsif (m/^-u$/) {
$req_vars = DEB_NONE;
$action = 'u';
} elsif (m/^-[ls]$/) {
$action = $_;
$action =~ s/^-//;
} elsif (m/^-f$/) {
$force=1;
} elsif (m/^-q/) {
my $varname = "$'";
error(_g('%s is not a supported variable name'), $varname)
unless (exists $arch_vars{$varname});
$req_variable_to_print = "$varname";
$req_vars = $arch_vars{$varname};
$action = 'q';
} elsif (m/^-c$/) {
$action = 'c';
last;
} elsif (m/^-L$/) {
list_arches();
exit unless @ARGV;
} elsif (m/^-(\?|-help)$/) {
usage();
exit 0;
} elsif (m/^--version$/) {
version();
exit 0;
} else {
usageerr(_g("unknown option \`%s'"), $_);
}
}
my %v;
my $abi;
#
# Set build variables
#
$v{DEB_BUILD_ARCH} = get_raw_build_arch()
if (action_needs(DEB_BUILD));
($abi, $v{DEB_BUILD_ARCH_OS}, $v{DEB_BUILD_ARCH_CPU}) = debarch_to_debtriplet($v{DEB_BUILD_ARCH})
if (action_needs(DEB_BUILD | DEB_ARCH_INFO));
($v{DEB_BUILD_ARCH_BITS}, $v{DEB_BUILD_ARCH_ENDIAN}) = debarch_to_cpuattrs($v{DEB_BUILD_ARCH})
if (action_needs(DEB_BUILD | DEB_ARCH_ATTR));
$v{DEB_BUILD_MULTIARCH} = debarch_to_multiarch($v{DEB_BUILD_ARCH})
if (action_needs(DEB_BUILD | DEB_MULTIARCH));
if (action_needs(DEB_BUILD | DEB_GNU_INFO)) {
$v{DEB_BUILD_GNU_TYPE} = debarch_to_gnutriplet($v{DEB_BUILD_ARCH});
($v{DEB_BUILD_GNU_CPU}, $v{DEB_BUILD_GNU_SYSTEM}) = split(/-/, $v{DEB_BUILD_GNU_TYPE}, 2);
}
#
# Set host variables
#
# First perform some sanity checks on the host arguments passed.
if ($req_host_arch ne '' && $req_host_gnu_type eq '') {
$req_host_gnu_type = debarch_to_gnutriplet($req_host_arch);
error(_g('unknown Debian architecture %s, you must specify ' .
'GNU system type, too'), $req_host_arch)
unless defined $req_host_gnu_type;
}
if ($req_host_gnu_type ne '' && $req_host_arch eq '') {
$req_host_arch = gnutriplet_to_debarch($req_host_gnu_type);
error(_g('unknown GNU system type %s, you must specify ' .
'Debian architecture, too'), $req_host_gnu_type)
unless defined $req_host_arch;
}
if ($req_host_gnu_type ne '' && $req_host_arch ne '') {
my $dfl_host_gnu_type = debarch_to_gnutriplet($req_host_arch);
error(_g('unknown default GNU system type for Debian architecture %s'),
$req_host_arch)
unless defined $dfl_host_gnu_type;
warning(_g('default GNU system type %s for Debian arch %s does not ' .
'match specified GNU system type %s'), $dfl_host_gnu_type,
$req_host_arch, $req_host_gnu_type)
if $dfl_host_gnu_type ne $req_host_gnu_type;
}
# Proceed to compute the host variables if needed.
if (action_needs(DEB_HOST)) {
if ($req_host_arch eq '') {
$v{DEB_HOST_ARCH} = get_raw_host_arch();
} else {
$v{DEB_HOST_ARCH} = $req_host_arch;
}
}
($abi, $v{DEB_HOST_ARCH_OS}, $v{DEB_HOST_ARCH_CPU}) = debarch_to_debtriplet($v{DEB_HOST_ARCH})
if (action_needs(DEB_HOST | DEB_ARCH_INFO));
($v{DEB_HOST_ARCH_BITS}, $v{DEB_HOST_ARCH_ENDIAN}) = debarch_to_cpuattrs($v{DEB_HOST_ARCH})
if (action_needs(DEB_HOST | DEB_ARCH_ATTR));
$v{DEB_HOST_MULTIARCH} = debarch_to_multiarch($v{DEB_HOST_ARCH})
if (action_needs(DEB_HOST | DEB_MULTIARCH));
if (action_needs(DEB_HOST | DEB_GNU_INFO)) {
if ($req_host_gnu_type eq '') {
$v{DEB_HOST_GNU_TYPE} = debarch_to_gnutriplet($v{DEB_HOST_ARCH});
} else {
$v{DEB_HOST_GNU_TYPE} = $req_host_gnu_type;
}
($v{DEB_HOST_GNU_CPU}, $v{DEB_HOST_GNU_SYSTEM}) = split(/-/, $v{DEB_HOST_GNU_TYPE}, 2);
my $gcc = get_gcc_host_gnu_type();
warning(_g('specified GNU system type %s does not match gcc system ' .
'type %s, try setting a correct CC environment variable'),
$v{DEB_HOST_GNU_TYPE}, $gcc)
if ($gcc ne '') && ($gcc ne $v{DEB_HOST_GNU_TYPE});
}
for my $k (keys %arch_vars) {
$v{$k} = $ENV{$k} if (defined ($ENV{$k}) && !$force);
}
if ($action eq 'l') {
foreach my $k (sort keys %arch_vars) {
print "$k=$v{$k}\n";
}
} elsif ($action eq 's') {
foreach my $k (sort keys %arch_vars) {
print "$k=$v{$k}; ";
}
print 'export ' . join(' ', sort keys %arch_vars) . "\n";
} elsif ($action eq 'u') {
print 'unset ' . join(' ', sort keys %arch_vars) . "\n";
} elsif ($action eq 'e') {
exit !debarch_eq($v{DEB_HOST_ARCH}, $req_eq_arch);
} elsif ($action eq 'i') {
exit !debarch_is($v{DEB_HOST_ARCH}, $req_is_arch);
} elsif ($action eq 'c') {
@ENV{keys %v} = values %v;
exec @ARGV;
} elsif ($action eq 'q') {
print "$v{$req_variable_to_print}\n";
}