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|
#! /usr/bin/perl
#
# dpkg-architecture
#
# Copyright © 2004-2005 Scott James Remnant <scott@netsplit.com>,
# Copyright © 1999 Marcus Brinkmann <brinkmd@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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$version="1.0.0"; # This line modified by Makefile
$0 = `basename $0`; chomp $0;
$dpkglibdir="/usr/lib/dpkg";
push(@INC,$dpkglibdir);
require 'controllib.pl';
sub usageversion {
print STDERR
"Debian $0 $version.
Copyright (C) 2004-2005 Scott James Remnant <scott\@netsplit.com>,
Copyright (C) 1999-2001 Marcus Brinkmann <brinkmd\@debian.org>.
This is free software; see the GNU General Public Licence
version 2 or later for copying conditions. There is NO warranty.
Usage:
$0 [<option> ...] [<action>]
Options:
-a<debian-arch> set current Debian architecture
-t<gnu-system> set current GNU system type
-L list valid architectures
-f force flag (override variables set in environment)
Actions:
-l list variables (default)
-e<debian-arch> compare with current Debian architecture
-i<arch-alias> check if current Debian architecture is <arch-alias>
-q<variable> prints only the value of <variable>.
-s print command to set environment variables
-u print command to unset environment variables
-c <command> set environment and run the command in it.
";
}
sub split_debian {
local ($_) = @_;
if (/^([^-]*)-(.*)/) {
return ($1, $2);
} else {
return ("linux", $_);
}
}
sub debian_to_gnu {
local ($arch) = @_;
local ($os, $cpu) = &split_debian($arch);
return undef unless exists($cputable{$cpu}) && exists($ostable{$os});
return join("-", $cputable{$cpu}, $ostable{$os});
}
sub split_gnu {
local ($_) = @_;
/^([^-]*)-(.*)/;
return ($1, $2);
}
sub gnu_to_debian {
local ($gnu) = @_;
local ($cpu, $os);
local ($a);
local ($gnu_cpu, $gnu_os) = &split_gnu($gnu);
foreach $_cpu (@cpu) {
if ($gnu_cpu =~ /^$cputable_re{$_cpu}$/) {
$cpu = $_cpu;
last;
}
}
foreach $_os (@os) {
if ($gnu_os =~ /^(.*-)?$ostable_re{$_os}$/) {
$os = $_os;
last;
}
}
return undef if !defined($cpu) || !defined($os);
return debian_arch_fix($os, $cpu);
}
# Check for -L
if (grep { m/^-L$/ } @ARGV) {
foreach $os (@os) {
foreach $cpu (@cpu) {
print debian_arch_fix($os, $cpu)."\n";
}
}
exit unless $#ARGV;
}
# Set default values:
chomp ($deb_build_arch = `dpkg --print-architecture`);
&syserr("dpkg --print-architecture failed") if $?>>8;
$deb_build_gnu_type = &debian_to_gnu($deb_build_arch);
# Default host: Current gcc.
$gcc = `\${CC:-gcc} -dumpmachine`;
if ($?>>8) {
&warn("Couldn't determine gcc system type, falling back to default (native compilation)");
$gcc = '';
} else {
chomp $gcc;
}
if ($gcc ne '') {
$deb_host_arch = &gnu_to_debian($gcc);
unless (defined $deb_host_arch) {
&warn ("Unknown gcc system type $gcc, falling back to default (native compilation)");
$gcc = '';
} else {
$gcc = $deb_host_gnu_type = &debian_to_gnu($deb_host_arch);
}
}
if (!defined($deb_host_arch)) {
# Default host: Native compilation.
$deb_host_arch = $deb_build_arch;
$deb_host_gnu_type = $deb_build_gnu_type;
}
$req_host_arch = '';
$req_host_gnu_type = '';
$req_build_gnu_type = '';
$req_eq_arch = '';
$req_is_arch = '';
$action='l';
$force=0;
while (@ARGV) {
$_=shift(@ARGV);
if (m/^-a/) {
$req_host_arch = "$'";
} elsif (m/^-t/) {
$req_host_gnu_type = "$'";
} elsif (m/^-e/) {
$req_eq_arch = "$'";
$action = 'e';
} elsif (m/^-i/) {
$req_is_arch = "$'";
$action = 'i';
} elsif (m/^-[lsu]$/) {
$action = $_;
$action =~ s/^-//;
} elsif (m/^-f$/) {
$force=1;
} elsif (m/^-q/) {
$req_variable_to_print = "$'";
$action = 'q';
} elsif (m/^-c$/) {
$action = 'c';
last;
} elsif (m/^-L$/) {
# Handled already
} else {
usageerr("unknown option \`$_'");
}
}
if ($req_host_arch ne '' && $req_host_gnu_type eq '') {
$req_host_gnu_type = &debian_to_gnu ($req_host_arch);
die ("unknown Debian architecture $req_host_arch, you must specify \GNU system type, too") unless defined $req_host_gnu_type;
}
if ($req_host_gnu_type ne '' && $req_host_arch eq '') {
$req_host_arch = &gnu_to_debian ($req_host_gnu_type);
die ("unknown GNU system type $req_host_gnu_type, you must specify Debian architecture, too") unless defined $req_host_arch;
}
if ($req_host_gnu_type ne '' && $req_host_arch ne '') {
$dfl_host_gnu_type = &debian_to_gnu ($req_host_arch);
&warn("Default GNU system type $dfl_host_gnu_type for Debian arch $req_host_arch does not match specified GNU system type $req_host_gnu_type") if $dfl_host_gnu_type ne $req_host_gnu_type;
}
$deb_host_arch = $req_host_arch if $req_host_arch ne '';
$deb_host_gnu_type = $req_host_gnu_type if $req_host_gnu_type ne '';
#$gcc = `\${CC:-gcc} --print-libgcc-file-name`;
#$gcc =~ s!^.*gcc-lib/(.*)/\d+(?:.\d+)*/libgcc.*$!$1!s;
&warn("Specified GNU system type $deb_host_gnu_type does not match gcc system type $gcc.") if !($req_is_arch or $req_eq_arch) && ($gcc ne '') && ($gcc ne $deb_host_gnu_type);
# Split the Debian and GNU names
($deb_host_arch_os, $deb_host_arch_cpu) = &split_debian($deb_host_arch);
($deb_build_arch_os, $deb_build_arch_cpu) = &split_debian($deb_build_arch);
($deb_host_gnu_cpu, $deb_host_gnu_system) = &split_gnu($deb_host_gnu_type);
($deb_build_gnu_cpu, $deb_build_gnu_system) = &split_gnu($deb_build_gnu_type);
%env = ();
if (!$force) {
$deb_build_arch = $ENV{DEB_BUILD_ARCH} if (exists $ENV{DEB_BUILD_ARCH});
$deb_build_arch_os = $ENV{DEB_BUILD_ARCH_OS} if (exists $ENV{DEB_BUILD_ARCH_OS});
$deb_build_arch_cpu = $ENV{DEB_BUILD_ARCH_CPU} if (exists $ENV{DEB_BUILD_ARCH_CPU});
$deb_build_gnu_cpu = $ENV{DEB_BUILD_GNU_CPU} if (exists $ENV{DEB_BUILD_GNU_CPU});
$deb_build_gnu_system = $ENV{DEB_BUILD_GNU_SYSTEM} if (exists $ENV{DEB_BUILD_GNU_SYSTEM});
$deb_build_gnu_type = $ENV{DEB_BUILD_GNU_TYPE} if (exists $ENV{DEB_BUILD_GNU_TYPE});
$deb_host_arch = $ENV{DEB_HOST_ARCH} if (exists $ENV{DEB_HOST_ARCH});
$deb_host_arch_os = $ENV{DEB_HOST_ARCH_OS} if (exists $ENV{DEB_HOST_ARCH_OS});
$deb_host_arch_cpu = $ENV{DEB_HOST_ARCH_CPU} if (exists $ENV{DEB_HOST_ARCH_CPU});
$deb_host_gnu_cpu = $ENV{DEB_HOST_GNU_CPU} if (exists $ENV{DEB_HOST_GNU_CPU});
$deb_host_gnu_system = $ENV{DEB_HOST_GNU_SYSTEM} if (exists $ENV{DEB_HOST_GNU_SYSTEM});
$deb_host_gnu_type = $ENV{DEB_HOST_GNU_TYPE} if (exists $ENV{DEB_HOST_GNU_TYPE});
}
@ordered = qw(DEB_BUILD_ARCH DEB_BUILD_ARCH_OS DEB_BUILD_ARCH_CPU
DEB_BUILD_GNU_CPU DEB_BUILD_GNU_SYSTEM DEB_BUILD_GNU_TYPE
DEB_HOST_ARCH DEB_HOST_ARCH_OS DEB_HOST_ARCH_CPU
DEB_HOST_GNU_CPU DEB_HOST_GNU_SYSTEM DEB_HOST_GNU_TYPE);
$env{'DEB_BUILD_ARCH'}=$deb_build_arch;
$env{'DEB_BUILD_ARCH_OS'}=$deb_build_arch_os;
$env{'DEB_BUILD_ARCH_CPU'}=$deb_build_arch_cpu;
$env{'DEB_BUILD_GNU_CPU'}=$deb_build_gnu_cpu;
$env{'DEB_BUILD_GNU_SYSTEM'}=$deb_build_gnu_system;
$env{'DEB_BUILD_GNU_TYPE'}=$deb_build_gnu_type;
$env{'DEB_HOST_ARCH'}=$deb_host_arch;
$env{'DEB_HOST_ARCH_OS'}=$deb_host_arch_os;
$env{'DEB_HOST_ARCH_CPU'}=$deb_host_arch_cpu;
$env{'DEB_HOST_GNU_CPU'}=$deb_host_gnu_cpu;
$env{'DEB_HOST_GNU_SYSTEM'}=$deb_host_gnu_system;
$env{'DEB_HOST_GNU_TYPE'}=$deb_host_gnu_type;
if ($action eq 'l') {
foreach $k (@ordered) {
print "$k=$env{$k}\n";
}
} elsif ($action eq 's') {
foreach $k (@ordered) {
print "$k=$env{$k}; ";
}
print "export ".join(" ",@ordered)."\n";
} elsif ($action eq 'u') {
print "unset ".join(" ",@ordered)."\n";
} elsif ($action eq 'e') {
exit !debian_arch_eq($deb_host_arch, $req_eq_arch);
} elsif ($action eq 'i') {
exit !debian_arch_is($deb_host_arch, $req_is_arch);
} elsif ($action eq 'c') {
@ENV{keys %env} = values %env;
exec @ARGV;
} elsif ($action eq 'q') {
if (exists $env{$req_variable_to_print}) {
print "$env{$req_variable_to_print}\n";
} else {
die "$req_variable_to_print is not a supported variable name";
}
}
|
