summaryrefslogtreecommitdiff
path: root/make/configure.pm
blob: b20639d3480e84e3f78784a41636feac60d59c07 (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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
#
# InspIRCd -- Internet Relay Chat Daemon
#
#   Copyright (C) 2020 Nicole Kleinhoff <ilbelkyr@shalture.org>
#   Copyright (C) 2013-2020 Sadie Powell <sadie@witchery.services>
#   Copyright (C) 2012 Robby <robby@chatbelgie.be>
#   Copyright (C) 2007-2008 Craig Edwards <brain@inspircd.org>
#   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
#
# This file is part of InspIRCd.  InspIRCd 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, version 2.
#
# 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 <http://www.gnu.org/licenses/>.
#


BEGIN {
	require 5.10.0;
}

package make::configure;

use feature ':5.10';
use strict;
use warnings FATAL => qw(all);

use Exporter              qw(import);
use File::Basename        qw(basename dirname);
use File::Spec::Functions qw(abs2rel catdir catfile);

use make::common;
use make::console;

use constant CONFIGURE_ROOT          => dirname dirname __FILE__;
use constant CONFIGURE_DIRECTORY     => catdir(CONFIGURE_ROOT, '.configure');
use constant CONFIGURE_CACHE_FILE    => catfile(CONFIGURE_DIRECTORY, 'cache.cfg');
use constant CONFIGURE_CACHE_VERSION => '1';
use constant CONFIGURE_ERROR_PIPE    => $ENV{INSPIRCD_VERBOSE} ? '' : '1>/dev/null 2>/dev/null';

our @EXPORT = qw(CONFIGURE_CACHE_FILE
                 CONFIGURE_CACHE_VERSION
                 CONFIGURE_DIRECTORY
                 cmd_clean
                 cmd_help
                 cmd_update
                 run_test
                 test_file
                 test_header
                 module_expand
                 module_shrink
                 write_configure_cache
                 get_compiler_info
                 find_compiler
                 parse_templates);

sub __get_socketengines {
	my @socketengines;
	foreach (<${\CONFIGURE_ROOT}/src/socketengines/socketengine_*.cpp>) {
		s/src\/socketengines\/socketengine_(\w+)\.cpp/$1/;
		push @socketengines, $1;
	}
	return @socketengines;
}

# TODO: when buildtool is done this can be mostly removed with
#       the remainder being merged into parse_templates.
sub __get_template_settings($$$) {

	# These are actually hash references
	my ($config, $compiler, $version) = @_;

	# Start off by populating with the config
	my %settings = %$config;

	# Compiler information
	while (my ($key, $value) = each %{$compiler}) {
		$settings{'COMPILER_' . $key} = $value;
	}

	# Version information
	while (my ($key, $value) = each %{$version}) {
		$settings{'VERSION_' . $key} = $value;
	}

	# Miscellaneous information
	$settings{CONFIGURE_DIRECTORY} = CONFIGURE_DIRECTORY;
	$settings{CONFIGURE_CACHE_FILE} = CONFIGURE_CACHE_FILE;
	$settings{SYSTEM_NAME} = lc $^O;

	return %settings;
}

sub __test_compiler($) {
	my $compiler = shift;
	return 0 unless run_test("`$compiler`", !system "$compiler -v ${\CONFIGURE_ERROR_PIPE}");
	return 0 unless run_test("`$compiler`", test_file($compiler, 'compiler.cpp', '-fno-rtti'), 'compatible');
	return 1;
}

sub cmd_clean {
	unlink CONFIGURE_CACHE_FILE;
}

sub cmd_help {
	my $SELIST = join ', ', __get_socketengines();
	print <<EOH;
Usage: $0 [options]

When no options are specified, configure runs in interactive mode and you must
specify any required values manually. If one or more options are specified,
non-interactive configuration is started and any omitted values are defaulted.

PATH OPTIONS

  --system                      Automatically set up the installation paths
                                for system-wide installation.
  --prefix=[dir]                The root install directory. If this is set then
                                all subdirectories will be adjusted accordingly.
                                [${\CONFIGURE_ROOT}/run]
  --binary-dir=[dir]            The location where the main server binary is
                                stored.
                                [${\CONFIGURE_ROOT}/run/bin]
  --config-dir=[dir]            The location where the configuration files and
                                SSL certificates are stored.
                                [${\CONFIGURE_ROOT}/run/conf]
  --data-dir=[dir]              The location where the data files, such as the
                                pid file, are stored.
                                [${\CONFIGURE_ROOT}/run/data]
  --example-dir=[dir]           The location where the example configuration files
                                and SQL schemas are stored.
                                [${\CONFIGURE_ROOT}/run/conf/examples]
  --log-dir=[dir]               The location where the log files are stored.
                                [${\CONFIGURE_ROOT}/run/logs]
  --manual-dir=[dir]            The location where the manual files are stored.
                                [${\CONFIGURE_ROOT}/run/manuals]
  --module-dir=[dir]            The location where the loadable modules are
                                stored.
                                [${\CONFIGURE_ROOT}/run/modules]
  --script-dir=[dir]            The location where the scripts, such as the
                                init scripts, are stored.
                                [${\CONFIGURE_ROOT}/run]

EXTRA MODULE OPTIONS

  --enable-extras=[extras]      Enables a comma separated list of extra modules.
  --disable-extras=[extras]     Disables a comma separated list of extra modules.
  --list-extras                 Shows the availability status of all extra
                                modules.

MISC OPTIONS

  --clean                       Remove the configuration cache file and start
                                the interactive configuration wizard.
  --disable-auto-extras         Disables automatically enabling extra modules
                                for which the dependencies are available.
  --disable-interactive         Disables the interactive configuration wizard.
  --distribution-label=[text]   Sets a distribution specific version label in
                                the build configuration.
  --gid=[id|name]               Sets the group to run InspIRCd as.
  --help                        Show this message and exit.
  --socketengine=[name]         Sets the socket engine to be used. Possible
                                values are $SELIST.
  --uid=[id|name]               Sets the user to run InspIRCd as.
  --update                      Updates the build environment with the settings
                                from the cache.


FLAGS

  CXX=[name]                    Sets the C++ compiler to use when building the
                                server. If not specified then the build system
                                will search for c++, g++, clang++ or icpc.

If you have any problems with configuring InspIRCd then visit our IRC channel
at irc.inspircd.org #InspIRCd or create a support discussion at
https://github.com/inspircd/inspircd/discussions.

Packagers: see https://docs.inspircd.org/packaging/ for packaging advice.
EOH
	exit 0;
}

sub cmd_update {
	print_error "You have not run $0 before. Please do this before trying to update the generated files." unless -f CONFIGURE_CACHE_FILE;
	say 'Updating...';
	my %config = read_config_file(CONFIGURE_CACHE_FILE);
	my %compiler = get_compiler_info($config{CXX});
	my %version = get_version $config{DISTRIBUTION};
	parse_templates(\%config, \%compiler, \%version);
	say 'Update complete!';
	exit 0;
}

sub run_test($$;$) {
	my ($what, $result, $adjective) = @_;
	$adjective //= 'available';
	print_format "Checking whether <|GREEN $what|> is $adjective ... ";
	print_format $result ? "<|GREEN yes|>\n" : "<|RED no|>\n";
	return $result;
}

sub test_file($$;$) {
	my ($compiler, $file, $args) = @_;
	my $status = 0;
	$args //= '';
	$status ||= system "$compiler -o ${\CONFIGURE_ROOT}/__test_$file ${\CONFIGURE_ROOT}/make/test/$file $args ${\CONFIGURE_ERROR_PIPE}";
	$status ||= system "${\CONFIGURE_ROOT}/__test_$file ${\CONFIGURE_ERROR_PIPE}";
	unlink "${\CONFIGURE_ROOT}/__test_$file";
	return !$status;
}

sub test_header($$;$) {
	my ($compiler, $header, $args) = @_;
	$args //= '';
	open(my $fh, "| $compiler -E - $args ${\CONFIGURE_ERROR_PIPE}") or return 0;
	print $fh "#include <$header>";
	close $fh;
	return !$?;
}

sub module_expand($) {
	my $module = shift;
	$module = "m_$module" unless $module =~ /^(?:m|core)_/;
	$module = "$module.cpp" unless $module =~ /\.cpp$/;
	return $module;
}

sub module_shrink($) {
	my $module = basename shift;
	return $module =~ s/(?:^m_|\.cpp$)//gr;
}

sub write_configure_cache(%) {
	unless (-e CONFIGURE_DIRECTORY) {
		print_format "Creating <|GREEN ${\abs2rel CONFIGURE_DIRECTORY, CONFIGURE_ROOT}|> ...\n";
		create_directory CONFIGURE_DIRECTORY, 0750 or print_error "unable to create ${\CONFIGURE_DIRECTORY}: $!";
	}

	print_format "Writing <|GREEN ${\abs2rel CONFIGURE_CACHE_FILE, CONFIGURE_ROOT}|> ...\n";
	my %config = @_;
	write_config_file CONFIGURE_CACHE_FILE, %config;
}

sub get_compiler_info($) {
	my $binary = shift;
	my %info = (NAME => 'Unknown', VERSION => '0.0');
	return %info if system "$binary -o __compiler_info ${\CONFIGURE_ROOT}/make/test/compiler_info.cpp ${\CONFIGURE_ERROR_PIPE}";
	open(my $fh, '-|', './__compiler_info 2>/dev/null');
	while (my $line = <$fh>) {
		$info{$1} = $2 if $line =~ /^([A-Z]+)\s(.+)$/;
	}
	close $fh;
	unlink './__compiler_info';
	return %info;
}

sub find_compiler {
	my @compilers = qw(c++ g++ clang++ icpc);
	foreach my $compiler (shift // @compilers) {
		return $compiler if __test_compiler $compiler;
		return "xcrun $compiler" if $^O eq 'darwin' && __test_compiler "xcrun $compiler";
	}
}

sub parse_templates($$$) {

	# These are actually hash references
	my ($config, $compiler, $version) = @_;

	# Collect settings to be used when generating files
	my %settings = __get_template_settings($config, $compiler, $version);

	# Iterate through files in make/template.
	foreach my $template (<${\CONFIGURE_ROOT}/make/template/*>) {
		print_format "Parsing <|GREEN ${\abs2rel $template, CONFIGURE_ROOT}|> ...\n";
		open(my $fh, $template) or print_error "unable to read $template: $!";
		my (@lines, $mode, @platforms, @targets);

		# First pass: parse template variables and directives.
		while (my $line = <$fh>) {
			chomp $line;

			# Does this line match a variable?
			while ($line =~ /(@(\w+?)(?:\|(\w*))?@)/) {
				my ($variable, $name, $default) = ($1, $2, $3);
				if (defined $settings{$name}) {
					$line =~ s/\Q$variable\E/$settings{$name}/;
				} elsif (defined $default) {
					$line =~ s/\Q$variable\E/$default/;
				} else {
					print_warning "unknown template variable '$name' in $template!";
					last;
				}
			}

			# Does this line match a directive?
			if ($line =~ /^(\s*)%(\w+)\s+(.+)$/) {
				if ($2 eq 'define') {
					if ($settings{$3}) {
						push @lines, "#$1define $3";
					} else {
						push @lines, "#$1undef $3";
					}
				} elsif ($2 eq 'mode') {
					$mode = oct $3;
				} elsif ($2 eq 'platform') {
					push @platforms, $3;
				} elsif ($2 eq 'target') {
					push @targets, catfile CONFIGURE_ROOT, $3;
				} else {
					print_warning "unknown template command '$2' in $template!";
					push @lines, $line;
				}
				next;
			}
			push @lines, $line;
		}
		close $fh;

		# Only proceed if this file should be templated on this platform.
		if ($#platforms < 0 || grep { $_ eq $^O } @platforms) {

			# Add a default target if the template has not defined one.
			unless (@targets) {
				push @targets, catfile(CONFIGURE_DIRECTORY, basename $template);
			}

			# Write the templated files to disk.
			for my $target (@targets) {

				# Create the directory if it doesn't already exist.
				my $directory = dirname $target;
				unless (-e $directory) {
					print_format "Creating <|GREEN ${\abs2rel $directory, CONFIGURE_ROOT}|> ...\n";
					create_directory $directory, 0750 or print_error "unable to create $directory: $!";
				};

				# Write the template file.
				print_format "Writing <|GREEN ${\abs2rel $target, CONFIGURE_ROOT}|> ...\n";
				open(my $fh, '>', $target) or print_error "unable to write $target: $!";
				foreach (@lines) {
					say $fh $_;
				}
				close $fh;

				# Set file permissions.
				if (defined $mode) {
					chmod $mode, $target;
				}
			}
		}
	}
}

1;