Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[legal] Add licence.pl and %.licence make target
It is now possible to run e.g. make bin/rtl8139.dsk.licence in order to see a licensing assessment for any given gPXE build. The assessment will either produce a single overall licence for the build (based on combining all the licences used within the source files for that build), or will exit with an error stating why a licence assessment is not possible (for example, if there are files involved that do not yet contain an explicit FILE_LICENCE() declaration).
- Loading branch information
Michael Brown
committed
May 18, 2009
1 parent
a525fb7
commit 41307f2
Showing
3 changed files
with
144 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| #!/usr/bin/perl -w | ||
| # | ||
| # Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>. | ||
| # | ||
| # 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 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., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
|
|
||
| use strict; | ||
| use warnings; | ||
| use Getopt::Long; | ||
|
|
||
| # List of licences we can handle | ||
| my $known_licences = { | ||
| gpl_any => { | ||
| desc => "GPL (any version)", | ||
| can_subsume => { | ||
| public_domain => 1, | ||
| bsd3 => 1, | ||
| bsd2 => 1, | ||
| }, | ||
| }, | ||
| gpl2_or_later => { | ||
| desc => "GPL version 2 (or, at your option, any later version)", | ||
| can_subsume => { | ||
| gpl_any => 1, | ||
| public_domain => 1, | ||
| bsd3 => 1, | ||
| bsd2 => 1, | ||
| }, | ||
| }, | ||
| gpl2_only => { | ||
| desc => "GPL version 2 only", | ||
| can_subsume => { | ||
| gpl_any => 1, | ||
| gpl2_or_later => 1, | ||
| public_domain => 1, | ||
| bsd3 => 1, | ||
| bsd2 => 1, | ||
| }, | ||
| }, | ||
| public_domain => { | ||
| desc => "Public Domain", | ||
| can_subsume => {}, | ||
| }, | ||
| bsd4 => { | ||
| desc => "BSD Licence (with advertising clause)", | ||
| can_subsume => { | ||
| public_domain => 1, | ||
| bsd3 => 1, | ||
| bsd2 => 1, | ||
| }, | ||
| }, | ||
| bsd3 => { | ||
| desc => "BSD Licence (without advertising clause)", | ||
| can_subsume => { | ||
| public_domain => 1, | ||
| bsd2 => 1, | ||
| }, | ||
| }, | ||
| bsd2 => { | ||
| desc => "BSD Licence (without advertising or endorsement clauses)", | ||
| can_subsume => { | ||
| public_domain => 1, | ||
| }, | ||
| }, | ||
| }; | ||
|
|
||
| # Parse command-line options | ||
| my $verbosity = 1; | ||
| Getopt::Long::Configure ( 'bundling', 'auto_abbrev' ); | ||
| GetOptions ( | ||
| 'verbose|v+' => sub { $verbosity++; }, | ||
| 'quiet|q+' => sub { $verbosity--; }, | ||
| ) or die "Could not parse command-line options\n"; | ||
|
|
||
| # Parse licence list from command line | ||
| my $licences = {}; | ||
| foreach my $licence ( @ARGV ) { | ||
| die "Unknown licence \"$licence\"\n" | ||
| unless exists $known_licences->{$licence}; | ||
| $licences->{$licence} = $known_licences->{$licence}; | ||
| } | ||
| die "No licences specified\n" unless %$licences; | ||
|
|
||
| # Dump licence list | ||
| if ( $verbosity >= 1 ) { | ||
| print "The following licences appear within this file:\n"; | ||
| foreach my $licence ( keys %$licences ) { | ||
| print " ".$licences->{$licence}->{desc}."\n" | ||
| } | ||
| } | ||
|
|
||
| # Apply licence compatibilities to reduce to a single resulting licence | ||
| foreach my $licence ( keys %$licences ) { | ||
| # Skip already-deleted licences | ||
| next unless exists $licences->{$licence}; | ||
| # Subsume any subsumable licences | ||
| foreach my $can_subsume ( keys %{$licences->{$licence}->{can_subsume}} ) { | ||
| if ( exists $licences->{$can_subsume} ) { | ||
| print $licences->{$licence}->{desc}." subsumes ". | ||
| $licences->{$can_subsume}->{desc}."\n" | ||
| if $verbosity >= 1; | ||
| delete $licences->{$can_subsume}; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| # Print resulting licence | ||
| die "Cannot reduce to a single resulting licence!\n" | ||
| if ( keys %$licences ) != 1; | ||
| ( my $licence ) = keys %$licences; | ||
| print "The overall licence for this file is:\n " if $verbosity >= 1; | ||
| print $licences->{$licence}->{desc}."\n"; |