use strict;
+our $srcdir;
+our @subdirs = @ARGV;
+
+die unless $ARGV[0] eq '--srcdir';
+die unless @ARGV>=2;
+shift @ARGV;
+($srcdir, @subdirs) = @ARGV;
+
our $root = [ '.', [ ] ];
# each node is [ 'relative subdir name', \@children ]
sub build_tree () {
- foreach my $subdir (@ARGV) {
+ foreach my $subdir (@subdirs) {
my @path = $subdir eq '.' ? () : split m{/+}, $subdir;
my $node = $root;
foreach my $d (@path) {
sub target_varname ($$) {
my ($var_prefix, $target) = @_;
- return $vprefix.'TARGETS'.($target eq 'all' ? '' : "_$target");
+ return $var_prefix.'TARGETS'.($target eq 'all' ? '' : "_$target");
+}
+
+our $writing_output;
+our %output_files;
+
+sub close_any_output_file() {
+ return unless defined $writing_output;
+ O->error and die "error writing $writing_output.tmp: $! (?)\n";
+ close O or die "error closing $writing_output.tmp: $!\n";
+ $writing_output = undef;
+}
+
+sub start_output_file ($) {
+ close_any_output_file();
+ ($writing_output) = @_;
+ die if $output_files{$writing_output}++;
+ my $tmp = "$writing_output.tmp";
+ open O, ">", $tmp or die "create $tmp: $!\n";
+}
+
+sub o {
+ die unless defined $writing_output;
+ print O @_ or die "error writing $writing_output.tmp: $!\n";
}
sub write_makefile ($$) {
o <<END;
default: all
%:
- $(MAKE) -C $cd ${dir_prefix}$@
+ \$(MAKE) -C $cd ${dir_prefix}$@
END
}
$var_prefix, $targets) = @_;
my $in = "${srcdir}/${dir_prefix}Subdir.mk.in";
- open I, '<' $in or die "open $in: $!\n";
+ open I, '<', $in or die "open $in: $!\n";
my $caps_re = qr{[A-Z][0-9_A-Z]*(?=\W)};
my $lc_e = qr{[a-z][-+,0-9_a-z]*(?=\W)};
my $esclit = '&';
process_subtree($root, [ ]);
start_output_file("subdirs.mk");
o "include Subdir.mk\n";
- foreach my $subdir (@ARGV) {
+ foreach my $subdir (@subdirs) {
o "include $subdir/Subdir.mk";
}
}