summaryrefslogtreecommitdiffstats
path: root/scripts/dpkg-buildflags.pl
blob: 8271a06108e9bdc122050f769103ca60e04f4d27 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
#!/usr/bin/perl
#
# dpkg-buildflags
#
# Copyright © 2010-2011 Raphaël Hertzog <hertzog@debian.org>
# Copyright © 2012-2013 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 qw(:DEFAULT report REPORT_STATUS);
use Dpkg::BuildEnv;
use Dpkg::BuildFlags;
use Dpkg::Vendor qw(get_current_vendor);

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 [<command>]')
    . "\n\n" . g_(
'Commands:
  --get <flag>       output the requested flag to stdout.
  --origin <flag>    output the origin of the flag to stdout:
                     value is one of vendor, system, user, env.
  --status           output a synopsis with all parameters affecting the
                     program behavior, the resulting flags and their origin.
  --query            like --status, but in deb822 format.
  --query-features <area>
                     output the status of features for the given area.
  --list             output a list of the flags supported by the current vendor.
  --export=(sh|make|cmdline|configure)
                     output something convenient to import the compilation
                     flags in a shell script, in make, or in a command line.
  --dump             output all compilation flags with their values.
  --help             show this help message.
  --version          show the version.
'), $Dpkg::PROGNAME;
}

my ($param, $action);
my $load_config = 1;

while (@ARGV) {
    $_ = shift(@ARGV);
    if (m/^--(get|origin|query-features)$/) {
        usageerr(g_('two commands specified: --%s and --%s'), $1, $action)
            if defined($action);
        $action = $1;
        $param = shift(@ARGV);
	usageerr(g_('%s needs a parameter'), $_) unless defined $param;
    } elsif (m/^--export(?:=(sh|make|cmdline|configure))?$/) {
        usageerr(g_('two commands specified: --%s and --%s'), 'export', $action)
            if defined($action);
        my $type = $1 || 'sh';
        # Map legacy aliases.
        $type = 'cmdline' if $type eq 'configure';
        $action = "export-$type";
    } elsif (m/^--(list|status|dump|query)$/) {
        usageerr(g_('two commands specified: --%s and --%s'), $1, $action)
            if defined($action);
        $action = $1;
        $load_config = 0 if $action eq 'list';
    } elsif (m/^-(?:\?|-help)$/) {
        usage();
        exit 0;
    } elsif (m/^--version$/) {
        version();
        exit 0;
    } else {
        usageerr(g_("unknown option '%s'"), $_);
    }
}

$action //= 'dump';

my $build_flags = Dpkg::BuildFlags->new();

$build_flags->load_config() if $load_config;

if ($action eq 'list') {
    foreach my $flag ($build_flags->list()) {
	print "$flag\n";
    }
} elsif ($action eq 'get') {
    exit 1 unless $build_flags->has($param);

    print $build_flags->get($param) . "\n";
} elsif ($action eq 'origin') {
    exit 1 unless $build_flags->has($param);

    print $build_flags->get_origin($param) . "\n";
} elsif ($action eq 'query-features') {
    exit 1 unless $build_flags->has_features($param);

    my %features = $build_flags->get_features($param);
    my %builtins = $build_flags->get_builtins($param);
    my $para_shown = 0;
    foreach my $feature (sort keys %features) {
        print $para_shown++ ? "\n" : '';
        printf "Feature: %s\n", $feature;
        printf "Enabled: %s\n", $features{$feature} // $builtins{$feature} ? 'yes' : 'no';
        printf "Builtin: %s\n", $builtins{$feature} ? 'yes' : 'no' if exists $builtins{$feature};
    }
} elsif ($action =~ m/^export-(.*)$/) {
    my $export_type = $1;
    foreach my $flag ($build_flags->list()) {
	next unless $flag =~ /^[A-Z]/; # Skip flags starting with lowercase
	my $value = $build_flags->get($flag);
	if ($export_type eq 'sh') {
	    $value =~ s/"/\"/g;
	    print "export $flag=\"$value\"\n";
	} elsif ($export_type eq 'make') {
	    $value =~ s/\$/\$\$/g;
	    print "export $flag := $value\n";
	} elsif ($export_type eq 'cmdline') {
	    print "$flag=\"$value\" ";
	}
    }
} elsif ($action eq 'dump') {
    foreach my $flag ($build_flags->list()) {
	my $value = $build_flags->get($flag);
	print "$flag=$value\n";
    }
} elsif ($action eq 'query') {
    # First print all environment variables that might have changed the
    # results (only existing ones, might make sense to add an option to
    # also show which ones could have set to modify it).
    printf "Vendor: %s\n", Dpkg::Vendor::get_current_vendor() || 'undefined';
    print "Environment:\n";
    for my $envvar (Dpkg::BuildEnv::list_accessed()) {
        print " $envvar=$ENV{$envvar}\n" if exists $ENV{$envvar};
    }

    # Then the resulting features:
    foreach my $area (sort $build_flags->get_feature_areas()) {
        print "\n";
        print "Area: $area\n";
        print "Features:\n";
        my %features = $build_flags->get_features($area);
        my %builtins = $build_flags->get_builtins($area);
        foreach my $feature (sort keys %features) {
            printf " %s=%s\n", $feature, $features{$feature} // $builtins{$feature} ? 'yes' : 'no';
        }
        print "Builtins:\n";
        foreach my $feature (sort keys %builtins) {
            printf " %s=%s\n", $feature, $builtins{$feature} ? 'yes' : 'no';
        }
    }

    # Then the resulting values (with their origin):
    foreach my $flag ($build_flags->list()) {
        print "\n";
        print "Flag: $flag\n";
        printf "Value: %s\n", $build_flags->get($flag);
        my $origin = $build_flags->get_origin($flag);
        if ($build_flags->is_maintainer_modified($flag)) {
            $origin .= '+maintainer';
        }
        print "Origin: $origin\n";
    }
} elsif ($action eq 'status') {
    # Prefix everything with "dpkg-buildflags: status: " to allow easy
    # extraction from a build log. Thus we use report with a non-translated
    # type string.

    # First print all environment variables that might have changed the
    # results (only existing ones, might make sense to add an option to
    # also show which ones could have set to modify it).
    my @envvars = Dpkg::BuildEnv::list_accessed();
    for my $envvar (@envvars) {
	if (exists $ENV{$envvar}) {
	    printf report(REPORT_STATUS, 'environment variable %s=%s',
	           $envvar, $ENV{$envvar});
	}
    }
    my $vendor = Dpkg::Vendor::get_current_vendor() || 'undefined';
    print report(REPORT_STATUS, "vendor is $vendor");
    # Then the resulting features:
    foreach my $area (sort $build_flags->get_feature_areas()) {
	my $fs;
	my %features = $build_flags->get_features($area);
	my %builtins = $build_flags->get_builtins($area);
	foreach my $feature (sort keys %features) {
	    $fs .= sprintf(' %s=%s', $feature, $features{$feature} // $builtins{$feature} ? 'yes' : 'no');
	}
	print report(REPORT_STATUS, "$area features:$fs");
        my $bs = q{};
        foreach my $feature (sort keys %builtins) {
            next if ! exists $builtins{$feature};
            $bs .= sprintf(' %s=%s', $feature, $builtins{$feature} ? 'yes' : 'no');
        }
        print report(REPORT_STATUS, "$area builtins:$bs");
    }
    # Then the resulting values (with their origin):
    foreach my $flag ($build_flags->list()) {
	my $value = $build_flags->get($flag);
	my $origin = $build_flags->get_origin($flag);
	my $maintainer = $build_flags->is_maintainer_modified($flag) ? '+maintainer' : '';
	print report(REPORT_STATUS, "$flag [$origin$maintainer]: $value");
    }
}