+ # 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 (<make/template/*>) {
+ print_format "Parsing <|GREEN $_|> ...\n";
+ open(TEMPLATE, $_) or print_error "unable to read $_: $!";
+ my (@lines, $mode, @platforms, %targets);
+
+ # First pass: parse template variables and directives.
+ while (my $line = <TEMPLATE>) {
+ chomp $line;
+
+ # Does this line match a variable?
+ while ($line =~ /(@(\w+?)@)/) {
+ my ($variable, $name) = ($1, $2);
+ if (defined $settings{$name}) {
+ $line =~ s/\Q$variable\E/$settings{$name}/;
+ } else {
+ print_warning "unknown template variable '$name' in $_!";
+ last;
+ }
+ }
+
+ # Does this line match a directive?
+ if ($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;
+ } else {
+ $targets{DEFAULT} = $2;
+ }
+ } else {
+ print_warning "unknown template command '$1' in $_!";
+ push @lines, $line;
+ }
+ next;
+ }
+ push @lines, $line;
+ }
+ close(TEMPLATE);
+
+ # Only proceed if this file should be templated on this platform.
+ if ($#platforms < 0 || grep { $_ eq $^O } @platforms) {
+
+ # Add a default target if the template has not defined one.
+ unless (scalar keys %targets) {
+ $targets{DEFAULT} = basename $_;
+ }
+
+ # Second pass: parse makefile junk and write files.
+ while (my ($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;
+ }
+
+ push @final_lines, $line;
+ }
+
+ # Write the template file.
+ print_format "Writing <|GREEN $target|> ...\n";
+ open(TARGET, '>', $target) or print_error "unable to write $_: $!";
+ foreach (@final_lines) {
+ say TARGET $_;
+ }
+ close(TARGET);
+
+ # Set file permissions.
+ if (defined $mode) {
+ chmod $mode, $target;
+ }
+ }
+ }
+ }