X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=make%2Fconfigure.pm;h=a49ad13186f864995e2c5c36e649530b929df3cc;hb=e94b673532f7833aaa4789f834e61d68e0b4fc56;hp=9f47973532c5f1c403ff7520c2c8e7e15f8bb373;hpb=133b110534ec3386d8735020e8679236002b6ed1;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/make/configure.pm b/make/configure.pm
index 9f4797353..a49ad1318 100644
--- a/make/configure.pm
+++ b/make/configure.pm
@@ -1,10 +1,10 @@
 #
 # InspIRCd -- Internet Relay Chat Daemon
 #
-#   Copyright (C) 2012-2014 Peter Powell <petpow@saberuk.com>
-#   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
-#   Copyright (C) 2007-2008 Craig Edwards <craigedwards@brainbox.cc>
-#   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
+#   Copyright (C) 2020 Nicole Kleinhoff <ilbelkyr@shalture.org>
+#   Copyright (C) 2013-2021 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
@@ -21,55 +21,54 @@
 #
 
 
-BEGIN {
-	require 5.8.0;
-}
-
 package make::configure;
 
+use v5.10.0;
 use strict;
 use warnings FATAL => qw(all);
 
-use Cwd            qw(getcwd);
-use Exporter       qw(import);
-use File::Basename qw(basename);
+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 make::utilities;
 
-use constant CONFIGURE_CACHE_FILE    => '.configure.cache';
+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
-                 read_configure_cache
-                 write_configure_cache
-                 get_compiler_info
-                 find_compiler
                  run_test
                  test_file
                  test_header
-                 get_property
+                 module_expand
+                 module_shrink
+                 write_configure_cache
+                 get_compiler_info
+                 find_compiler
                  parse_templates);
 
 sub __get_socketengines {
 	my @socketengines;
-	foreach (<src/socketengines/socketengine_*.cpp>) {
+	for (<${\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($$) {
+sub __get_template_settings($$$) {
 
 	# These are actually hash references
-	my ($config, $compiler) = @_;
+	my ($config, $compiler, $version) = @_;
 
 	# Start off by populating with the config
 	my %settings = %$config;
@@ -80,354 +79,278 @@ sub __get_template_settings($$) {
 	}
 
 	# Version information
-	my %version = get_version();
-	while (my ($key, $value) = each %version) {
+	while (my ($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 $^O;
-	chomp($settings{SYSTEM_NAME_VERSION} = `uname -sr 2>/dev/null`);
 
 	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 $PWD = getcwd();
 	my $SELIST = join ', ', __get_socketengines();
-	print <<EOH;
-Usage: $0 [options]
+	print console_format <<EOH;
+<|GREEN Usage:|> <|BOLD $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
+<|GREEN PATH OPTIONS|>
 
-  --system                      Automatically set up the installation paths
-                                for system-wide installation.
-  --prefix=[dir]                The root install directory. If this is set then
+  <|BOLD --portable|>                    Automatically set up the installation paths for
+                                portable installation.
+  <|BOLD --system|>                      Automatically set up the installation paths for
+                                system-wide installation.
+  <|BOLD --prefix <DIR>|>                The root install directory. If this is set then
                                 all subdirectories will be adjusted accordingly.
-                                [$PWD/run]
-  --binary-dir=[dir]            The location where the main server binary is
+                                [${\CONFIGURE_ROOT}/run]
+  <|BOLD --binary-dir <DIR>|>            The location where the main server binary is
                                 stored.
-                                [$PWD/run/bin]
-  --config-dir=[dir]            The location where the configuration files and
+                                [${\CONFIGURE_ROOT}/run/bin]
+  <|BOLD --config-dir <DIR>|>            The location where the configuration files and
                                 SSL certificates are stored.
-                                [$PWD/run/conf]
-  --data-dir=[dir]              The location where the data files, such as the
-                                pid file, are stored.
-                                [$PWD/run/data]
-  --log-dir=[dir]               The location where the log files are stored.
-                                [$PWD/run/logs]
-  --manual-dir=[dir]            The location where the manual files are stored.
-                                [$PWD/run/manuals]
-  --module-dir=[dir]            The location where the loadable modules are
+                                [${\CONFIGURE_ROOT}/run/conf]
+  <|BOLD --data-dir <DIR>|>              The location where the data files, such as the
+                                xline database, are stored.
+                                [${\CONFIGURE_ROOT}/run/data]
+  <|BOLD --example-dir <DIR>|>           The location where the example configuration
+                                files and SQL schemas are stored.
+                                [${\CONFIGURE_ROOT}/run/conf/examples]
+  <|BOLD --log-dir <DIR>|>               The location where the log files are stored.
+                                [${\CONFIGURE_ROOT}/run/logs]
+  <|BOLD --manual-dir <DIR>|>            The location where the manual files are stored.
+                                [${\CONFIGURE_ROOT}/run/manuals]
+  <|BOLD --module-dir <DIR>|>            The location where the loadable modules are
                                 stored.
-                                [$PWD/run/modules]
-
-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
+                                [${\CONFIGURE_ROOT}/run/modules]
+  <|BOLD --runtime-dir <DIR>|>            The location where the runtime files, such as
+                                the pid file, are stored.
+                                [${\CONFIGURE_ROOT}/run/data]
+  <|BOLD --script-dir <DIR>|>            The location where the scripts, such as the
+                                init scripts, are stored.
+                                [${\CONFIGURE_ROOT}/run]
+
+<|GREEN EXTRA MODULE OPTIONS|>
+
+  <|BOLD --enable-extras <MODULE>|>      Enables a comma separated list of extra modules.
+  <|BOLD --disable-extras <MODULE>|>     Disables a comma separated list of extra modules.
+  <|BOLD --list-extras|>                 Shows the availability status of all extra
                                 modules.
 
-MISC OPTIONS
+<|GREEN MISC OPTIONS|>
 
-  --clean                       Remove the configuration cache file and start
+  <|BOLD --clean|>                       Remove the configuration cache file and start
                                 the interactive configuration wizard.
-  --disable-interactive         Disables the interactive configuration wizard.
-  --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
+  <|BOLD --disable-auto-extras|>         Disables automatically enabling extra modules
+                                for which the dependencies are available.
+  <|BOLD --disable-interactive|>         Disables the interactive configuration wizard.
+  <|BOLD --distribution-label <TEXT>|>   Sets a distribution specific version label in
+                                the build configuration.
+  <|BOLD --gid <ID|NAME>|>               Sets the group to run InspIRCd as.
+  <|BOLD --help|>                        Show this message and exit.
+  <|BOLD --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.
+  <|BOLD --uid [ID|NAME]|>               Sets the user to run InspIRCd as.
+  <|BOLD --update|>                      Updates the build environment with the settings
+                                from the cache.
 
+<|GREEN FLAGS|>
 
-FLAGS
-
-  CXX=[name]                    Sets the C++ compiler to use when building the
+  <|BOLD 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.
+  <|BOLD INSPIRCD_VERBOSE=<0|1>|>        Shows additional information for debugging.
 
 If you have any problems with configuring InspIRCd then visit our IRC channel
-at irc.ChatSpike.net #InspIRCd.
+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;
-	print "Updating...\n";
-	my %config = read_configure_cache();
+	say 'Updating...';
+	my %config = read_config_file(CONFIGURE_CACHE_FILE);
+	$config{EXAMPLE_DIR} //= catdir $config{CONFIG_DIR}, 'examples';
+	$config{RUNTIME_DIR} //= $config{DATA_DIR};
 	my %compiler = get_compiler_info($config{CXX});
-	parse_templates(\%config, \%compiler);
-	print "Update complete!\n";
+	my %version = get_version $config{DISTRIBUTION};
+	parse_templates(\%config, \%compiler, \%version);
+	say 'Update complete!';
 	exit 0;
 }
 
-sub read_configure_cache {
-	my %config;
-	open(CACHE, CONFIGURE_CACHE_FILE) or return %config;
-	while (my $line = <CACHE>) {
-		next if $line =~ /^\s*($|\#)/;
-		my ($key, $value) = ($line =~ /^(\S+)="(.*)"$/);
-		$config{$key} = $value;
-	}
-	close(CACHE);
-	return %config;
+sub run_test($$;$) {
+	my ($what, $result, $adjective) = @_;
+	$adjective //= 'available';
+	print console_format "Checking whether <|GREEN $what|> is $adjective ... ";
+	say console_format($result ? "<|GREEN yes|>" : "<|RED no|>");
+	return $result;
 }
 
-sub write_configure_cache(%) {
-	print_format "Writing <|GREEN ${\CONFIGURE_CACHE_FILE}|> ...\n";
-	my %config = @_;
-	open(CACHE, '>', CONFIGURE_CACHE_FILE) or print_error "unable to write ${\CONFIGURE_CACHE_FILE}: $!";
-	while (my ($key, $value) = each %config) {
-		$value = '' unless defined $value;
-		print CACHE "$key=\"$value\"\n";
-	}
-	close(CACHE);
+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 get_compiler_info($) {
-	my $binary = shift;
-	my $version = `$binary -v 2>&1`;
-	if ($version =~ /(?:clang|llvm)\sversion\s(\d+\.\d+)/i) {
-		return (
-			NAME => 'Clang',
-			VERSION => $1,
-			UNSUPPORTED => $1 lt '3.0',
-			REASON => 'Clang 2.9 and older do not have adequate C++ support.'
-		);
-	} elsif ($version =~ /gcc\sversion\s(\d+\.\d+)/i) {
-		return (
-			NAME => 'GCC',
-			VERSION => $1,
-			UNSUPPORTED => $1 lt '4.1',
-			REASON => 'GCC 4.0 and older do not have adequate C++ support.'
-		);
-	} elsif ($version =~ /(?:icc|icpc)\sversion\s(\d+\.\d+).\d+\s\(gcc\sversion\s(\d+\.\d+).\d+/i) {
-		return (
-			NAME => 'ICC',
-			VERSION => $1,
-			UNSUPPORTED => $2 lt '4.1',
-			REASON => "ICC $1 (GCC $2 compatibility mode) does not have adequate C++ support."
-		);
-	}
-	return (
-		NAME => $binary,
-		VERSION => '0.0'
-	);
+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 find_compiler {
-	foreach my $compiler ('c++', 'g++', 'clang++', 'icpc') {
-		return $compiler unless system "$compiler -v > /dev/null 2>&1";
-		if ($^O eq 'Darwin') {
-			return $compiler unless system "xcrun $compiler -v > /dev/null 2>&1";
-		}
-	}
-	return "";
+sub module_expand($) {
+	my $module = shift;
+	$module = "m_$module" unless $module =~ /^(?:m|core)_/;
+	$module = "$module.cpp" unless $module =~ /\.cpp$/;
+	return $module;
 }
 
-sub run_test($$) {
-	my ($what, $result) = @_;
-	print_format "Checking whether <|GREEN $what|> is available ... ";
-	print_format $result ? "<|GREEN yes|>\n" : "<|RED no|>\n";
-	return $result;
+sub module_shrink($) {
+	my $module = basename shift;
+	$module =~ s/(?:^m_|\.cpp$)//g;
+	return $module;
 }
 
-sub test_file($$;$) {
-	my ($cc, $file, $args) = @_;
-	my $status = 0;
-	$args ||= '';
-	$status ||= system "$cc -o __test_$file make/test/$file $args >/dev/null 2>&1";
-	$status ||= system "./__test_$file >/dev/null 2>&1";
-	unlink  "./__test_$file";
-	return !$status;
+sub write_configure_cache(%) {
+	unless (-e CONFIGURE_DIRECTORY) {
+		say console_format "Creating <|GREEN ${\abs2rel CONFIGURE_DIRECTORY, CONFIGURE_ROOT}|> ...";
+		create_directory CONFIGURE_DIRECTORY, 0750 or print_error "unable to create ${\CONFIGURE_DIRECTORY}: $!";
+	}
+
+	say console_format "Writing <|GREEN ${\abs2rel CONFIGURE_CACHE_FILE, CONFIGURE_ROOT}|> ...";
+	my %config = @_;
+	write_config_file CONFIGURE_CACHE_FILE, %config;
 }
 
-sub test_header($$;$) {
-	my ($cc, $header, $args) = @_;
-	$args ||= '';
-	open(CC, "| $cc -E - $args >/dev/null 2>&1") or return 0;
-	print CC "#include <$header>";
-	close(CC);
-	return !$?;
+sub get_compiler_info($) {
+	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 get_property($$;$)
-{
-	my ($file, $property, $default) = @_;
-	open(MODULE, $file) or return $default;
-	while (<MODULE>) {
-		if ($_ =~ /^\/\* \$(\S+): (.+) \*\/$/) {
-			next unless $1 eq $property;
-			close(MODULE);
-			return translate_functions($2, $file);
-		}
+sub find_compiler {
+	my @compilers = qw(c++ g++ clang++ icpc);
+	for my $compiler (shift // @compilers) {
+		return $compiler if __test_compiler $compiler;
+		return "xcrun $compiler" if $^O eq 'darwin' && __test_compiler "xcrun $compiler";
 	}
-	close(MODULE);
-	return defined $default ? $default : '';
 }
 
-sub parse_templates($$) {
+sub parse_templates($$$) {
 
 	# These are actually hash references
-	my ($config, $compiler) = @_;
+	my ($config, $compiler, $version) = @_;
 
 	# Collect settings to be used when generating files
-	my %settings = __get_template_settings($config, $compiler);
+	my %settings = __get_template_settings($config, $compiler, $version);
 
 	# Iterate through files in make/template.
-	foreach (<make/template/*>) {
-		print_format "Parsing <|GREEN $_|> ...\n";
-		open(TEMPLATE, $_) or print_error "unable to read $_: $!";
-		my (@lines, $mode, @platforms, %targets);
+	for my $template (<${\CONFIGURE_ROOT}/make/template/*>) {
+		say console_format "Parsing <|GREEN ${\abs2rel $template, CONFIGURE_ROOT}|> ...";
+		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 = <TEMPLATE>) {
+		while (my $line = <$fh>) {
 			chomp $line;
 
 			# Does this line match a variable?
-			while ($line =~ /(@(\w+?)@)/) {
-				my ($variable, $name) = ($1, $2);
+			while ($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 $_!";
+					print_warning "unknown template variable '$name' in $template!";
 					last;
 				}
 			}
 
 			# Does this line match a directive?
-			if ($line =~ /^\s*%(\w+)\s+(.+)$/) {
-				if ($1 eq 'define') {
-					if ($settings{$2}) {
-						push @lines, "#define $2";
-					} else {
-						push @lines, "#undef $2";
-					}
-				} elsif ($1 eq 'mode') {
-					$mode = oct $2;
-				} elsif ($1 eq 'platform') {
-					push @platforms, $2;
-				} elsif ($1 eq 'target') {
-					if ($2 =~ /(\w+)\s(.+)/) {
-						$targets{$1} = $2;
+			if ($line =~ /^(\s*)%(\w+)\s+(.+)$/) {
+				if ($2 eq 'define') {
+					if ($settings{$3}) {
+						push @lines, "#$1define $3";
 					} else {
-						$targets{DEFAULT} = $2;
+						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 '$1' in $_!";
+					print_warning "unknown template command '$2' in $template!";
 					push @lines, $line;
 				}
 				next;
 			}
 			push @lines, $line;
 		}
-		close(TEMPLATE);
+		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 (scalar keys %targets) {
-				$targets{DEFAULT} = basename $_;
+			unless (@targets) {
+				push @targets, catfile(CONFIGURE_DIRECTORY, basename $template);
 			}
 
-			# Second pass: parse makefile junk and write files.
-			while (my ($name, $target) = each %targets) {
-
-				# TODO: when buildtool is done this mess can be removed completely.
-				my @final_lines;
-				foreach my $line (@lines) {
-
-					# Are we parsing a makefile and does this line match a statement?
-					if ($name =~ /(?:BSD|GNU)_MAKE/ && $line =~ /^\s*\@(\w+)(?:\s+(.+))?$/) {
-						my @tokens = split /\s/, $2 if defined $2;
-						if ($1 eq 'DO_EXPORT' && defined $2) {
-							if ($name eq 'BSD_MAKE') {
-								foreach my $variable (@tokens) {
-									push @final_lines, "MAKEENV += $variable='\${$variable}'";
-								}
-							} elsif ($name eq 'GNU_MAKE') {
-								push @final_lines, "export $2";
-							}
-						} elsif ($1 eq 'ELSE') {
-							if ($name eq 'BSD_MAKE') {
-								push @final_lines, ".else";
-							} elsif ($name eq 'GNU_MAKE') {
-								push @final_lines, "else";
-							}
-						} elsif ($1 eq 'ENDIF') {
-							if ($name eq 'BSD_MAKE') {
-								push @final_lines, ".endif";
-							} elsif ($name eq 'GNU_MAKE') {
-								push @final_lines, "endif";
-							}
-						} elsif ($1 eq 'ELSIFEQ' && defined $2) {
-							if ($name eq 'BSD_MAKE') {
-								push @final_lines, ".elif $tokens[0] == $tokens[1]";
-							} elsif ($name eq 'GNU_MAKE') {
-								push @final_lines, "else ifeq ($tokens[0], $tokens[1])";
-							}
-						} elsif ($1 eq 'IFDEF' && defined $2) {
-							if ($name eq 'BSD_MAKE') {
-								push @final_lines, ".if defined($2)";
-							} elsif ($name eq 'GNU_MAKE') {
-								push @final_lines, "ifdef $2";
-							}
-						} elsif ($1 eq 'IFEQ' && defined $2) {
-							if ($name eq 'BSD_MAKE') {
-								push @final_lines, ".if $tokens[0] == $tokens[1]";
-							} elsif ($name eq 'GNU_MAKE') {
-								push @final_lines, "ifeq ($tokens[0],$tokens[1])";
-							}
-						} elsif ($1 eq 'IFNEQ' && defined $2) {
-							if ($name eq 'BSD_MAKE') {
-								push @final_lines, ".if $tokens[0] != $tokens[1]";
-							} elsif ($name eq 'GNU_MAKE') {
-								push @final_lines, "ifneq ($tokens[0],$tokens[1])";
-							}
-						} elsif ($1 eq 'IFNDEF' && defined $2) {
-							if ($name eq 'BSD_MAKE') {
-								push @final_lines, ".if !defined($2)";
-							} elsif ($name eq 'GNU_MAKE') {
-								push @final_lines, "ifndef $2";
-							}
-						} elsif ($1 eq 'TARGET' && defined $2) {
-							if ($tokens[0] eq $name) {
-								push @final_lines, substr($2, length($tokens[0]) + 1);
-							}
-						} elsif ($1 !~ /[A-Z]/) {
-							# HACK: silently ignore if lower case as these are probably make commands.
-							push @final_lines, $line;
-						} else {
-							print_warning "unknown template command '$1' in $_!";
-							push @final_lines, $line;
-						}
-						next;
-					}
+			# Write the templated files to disk.
+			for my $target (@targets) {
 
-					push @final_lines, $line;
-				}
+				# Create the directory if it doesn't already exist.
+				my $directory = dirname $target;
+				unless (-e $directory) {
+					say console_format "Creating <|GREEN ${\abs2rel $directory, CONFIGURE_ROOT}|> ...";
+					create_directory $directory, 0750 or print_error "unable to create $directory: $!";
+				};
 
 				# Write the template file.
-				print_format "Writing <|GREEN $target|> ...\n";
-				open(TARGET, '>', $target) or print_error "unable to write $_: $!";
-				foreach (@final_lines) {
-					print TARGET $_, "\n";
+				say console_format "Writing <|GREEN ${\abs2rel $target, CONFIGURE_ROOT}|> ...";
+				open(my $fh, '>', $target) or print_error "unable to write $target: $!";
+				for (@lines) {
+					say $fh $_;
 				}
-				close(TARGET);
+				close $fh;
 
 				# Set file permissions.
 				if (defined $mode) {