]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - make/configure.pm
Use IsCTCP in blockcolor for ignoring CTCPs.
[user/henk/code/inspircd.git] / make / configure.pm
index 90523383505f24d4fa6caf96bb83e710e84b64fd..a49ad13186f864995e2c5c36e649530b929df3cc 100644 (file)
@@ -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
 #
 
 
-BEGIN {
-       require 5.8.0;
-}
-
 package make::configure;
 
+use v5.10.0;
 use strict;
 use warnings FATAL => qw(all);
 
-use Cwd 'getcwd';
-use Exporter 'import';
-use File::Basename 'basename';
-
-use make::utilities;
-
-our @EXPORT = qw(cmd_clean cmd_help cmd_update
-                 read_configure_cache write_configure_cache
-                 get_compiler_info find_compiler
-                 run_test test_file test_header
-                 dump_hash get_property parse_templates);
-
-sub __get_socketengines() {
+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    => $ENV{INSPIRCD_VERBOSE} ? '' : '1>/dev/null 2>/dev/null';
+
+our @EXPORT = qw(CONFIGURE_CACHE_FILE
+                 CONFIGURE_CACHE_VERSION
+                 CONFIGURE_DIRECTORY
+                 cmd_clean
+                 cmd_help
+                 cmd_update
+                 run_test
+                 test_file
+                 test_header
+                 module_expand
+                 module_shrink
+                 write_configure_cache
+                 get_compiler_info
+                 find_compiler
+                 parse_templates);
+
+sub __get_socketengines {
        my @socketengines;
-       foreach (<src/socketengines/socketengine_*.cpp>) {
+       for (<${\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
+       # Start off by populating with the config
        my %settings = %$config;
 
        # Compiler information
@@ -67,368 +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 '.config.cache';
+       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.
-                                [$PWD/run/logs]
-  --module-dir=[dir]            The location where the loadable modules are
+                                [${\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.
-                                [$PWD/run/modules]
-  --build-dir=[dir]             The location to store files in while building.
-
-
-EXTRA MODULE OPTIONS
-
-  --enable-extras=[extras]      Enables a comma separated list of extra modules.
-  --disable-extras=[extras]     Disables a comma separated list of extra modules.
-  --list-extras                 Shows the availability status of all extra
+                                [${\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.
-  --help                        Show this message and exit.
-  --uid=[name]                  Sets the user to run InspIRCd as.
-  --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.
-  --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.
 
-FLAGS
+<|GREEN 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 {
-       unless (-f '.config.cache') {
-               print "You have not run $0 before. Please do this before trying to update the build files.\n";
-               exit 1;
-       }
-       print "Updating...\n";
-       my %config = read_configure_cache();
+       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);
+       $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 %cfg = ();
-       open(CACHE, '.config.cache') or return %cfg;
-       while (my $line = <CACHE>) {
-               next if $line =~ /^\s*($|\#)/;
-               my ($key, $value) = ($line =~ /^(\S+)="(.*)"$/);
-               $cfg{$key} = $value;
-       }
-       close(CACHE);
-       return %cfg;
+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(%) {
-       my %cfg = @_;
-       open(CACHE, ">.config.cache") or return 0;
-       while (my ($key, $value) = each %cfg) {
-               $value = "" unless defined $value;
-               print CACHE "$key=\"$value\"\n";
-       }
-       close(CACHE);
-       return 1;
+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 "Checking whether $what is available... ";
-       print $result ? "yes\n" : "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}: $!";
+       }
 
-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 !$?;
+       say console_format "Writing <|GREEN ${\abs2rel CONFIGURE_CACHE_FILE, CONFIGURE_ROOT}|> ...";
+       my %config = @_;
+       write_config_file CONFIGURE_CACHE_FILE, %config;
 }
 
-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, $file);
-               }
+sub get_compiler_info($) {
+       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(MODULE);
-       return defined $default ? $default : '';
+       close $fh;
+       unlink './__compiler_info';
+       return %info;
 }
 
-sub dump_hash() {
-       print "\n\e[1;32mPre-build configuration is complete!\e[0m\n\n";
-       print "\e[0mBase install path:\e[1;32m\t\t$main::config{BASE_DIR}\e[0m\n";
-       print "\e[0mConfig path:\e[1;32m\t\t\t$main::config{CONFIG_DIR}\e[0m\n";
-       print "\e[0mData path:\e[1;32m\t\t\t$main::config{DATA_DIR}\e[0m\n";
-       print "\e[0mLog path:\e[1;32m\t\t\t$main::config{LOG_DIR}\e[0m\n";
-       print "\e[0mModule path:\e[1;32m\t\t\t$main::config{MODULE_DIR}\e[0m\n";
-       print "\e[0mCompiler:\e[1;32m\t\t\t$main::cxx{NAME} $main::cxx{VERSION}\e[0m\n";
-       print "\e[0mSocket engine:\e[1;32m\t\t\t$main::config{SOCKETENGINE}\e[0m\n";
-       print "\e[0mGnuTLS support:\e[1;32m\t\t\t$main::config{USE_GNUTLS}\e[0m\n";
-       print "\e[0mOpenSSL support:\e[1;32m\t\t$main::config{USE_OPENSSL}\e[0m\n";
+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";
+       }
 }
 
-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 "Parsing $_...\n";
-               open(TEMPLATE, $_);
-               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}) {
-                                       $line =~ s/$variable/$settings{$name}/;
+                                       $line =~ s/\Q$variable\E/$settings{$name}/;
+                               } elsif (defined $default) {
+                                       $line =~ s/\Q$variable\E/$default/;
                                } else {
-                                       print STDERR "Warning: unknown template variable '$name' in $_!\n";
+                                       print_warning "unknown template variable '$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 STDERR "Warning: unknown template command '$1' in $_!\n";
+                                       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 STDERR "Warning: unknown template command '$1' in $_!\n";
-                                                       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 "Writing $target...\n";
-                               open(TARGET, ">$target");
-                               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) {