Name
Debian::DpkgCross - Package of dpkg-cross commonly used functions
The 2.x series of dpkg-cross is seeking to achieve its own removal by
incorporating as much cross-building support as possible into dpkg
itself. The number, scope and range of functions supported by this
package is therefore only going to decrease. Any newly-written code
using this package will need to keep up with changes in dpkg.
Developers are recommended to join the debian-dpkg and debian-embedded
mailing lists and keep their code under review.
Copyright and License
Copyright (C) 2004 Nikita Youshchenko <yoush@cs.msu.su>
Copyright (C) 2004 Raphael Bossek <bossekr@debian.org>
Copyright (c) 2007-2009 Neil Williams <codehelp@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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Bugs
Please report bugs via the Debian Bug Tracking System.
Support
All enquiries to the "<debian-embedded@lists.debian.org"> mailing list.
MAKEFLAGS
See bug #437507 Even if the other flags are needed CC, GCC and other
compiler names should *NOT* be overridden in $ENV{'MAKEFLAGS'} because
this prevents packages compiling and running build tools using
CC_FOR_BUILD. CDBS packages need to declare an empty override variable
in debian/rules:
DEB_CONFIGURE_SCRIPT_ENV=
Depending on progress with dpkg cross-building support, the remaining
overrides may also be removed. Do not rely on these being set.
read_config
Read '$conffile' and save the definition in global variables all
recognised variables.
'$crossroot' will be set by setup(). Until setup() is called all
"crossroot-<arch>" settings are stored within '%allcrossroots'.
All package variables are stored within '%conf'.
No variables are skipped.
return: none
get_config
Return the current configuration from read_config as a hash reference.
get_version
Return the current DpkgCross version string used by all dpkg-cross
scripts.
dump_debug_data
Return a hashtable of assorted debug data collated during the current
run that can be processed using Data::Dumper.
rewrite_pkg_name
Converts a package name into the dpkg-cross package name.
$1 - the package name to check and convert if needed return - the
cross-package name
convert_filename($)
Converts an original .deb filename into the dpkg-cross .deb filename or
converts a dpkg-cross .deb filename into the original .deb filename.
returns undef on error
get_architecture
Returns the current architecture.
return: Current architecture or empty if not set.
check_arch($arch)
Checks that the supplied $arch is (or can be converted to) a
DEB_HOST_GNU_TYPE that can be supported by dpkg-cross.
returns the DPKG_HOST_GNU_TYPE or undef
setup
Set global variables '$arch', '$crossbase', '$crossbin', '$crosslib32',
'$crossdir', '$crossinc', '$crosslib', '$crosslib64', '$crossprefix',
'$compilerpath' and '$deb_host_gnu_type' to defaults and substitute
them with variables from '%conf' and '$arch'.
return: none
create_tmpdir($basename)
Safely create a temporary directory
$1: Directory basename (random suffix will be added)
return: Full directory pathname, undef if failed
convert_path($path)
Convert path, substituting '$crossinc', '$crosslib', '$crosslib64',
'$crosslib32', '$crossdir'. This function will be used while building
foreign binary packages or converting GCC options.
$1: Directory (and file) to convert.
return: Converted path.
simplify_path($path)
Simplify path. Remove duplicate slashes, "./", "dir/..", etc
$1: Path to simplify.
return: Simplified path.
get_endianness
Provide a central function to query the endianness of the current cross
building architecture.
Parses /etc/dpkg-cross/cross-config.$arch to convert the autotools
cache value into a general purpose string.
Returns 'big' or 'little' or undefined on error.
This function requires dpkg-cross to be installed.