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 ($$) {
my ($var_prefix, $target) = @_;
- return $vprefix.'TARGETS'.($target eq 'all' ? '' : "_$target");
+ return $var_prefix.'TARGETS'.($target eq 'all' ? '' : "_$target");
+}
+
+our $writing_output;
+our %output_files;
+
+sub close_any_output_file() {
+ return unless defined $writing_output;
+ O->error and die "error writing $writing_output.tmp: $! (?)\n";
+ close O or die "error closing $writing_output.tmp: $!\n";
+ $writing_output = undef;
+}
+
+sub o {
+ die unless defined $writing_output;
+ print O @_ or die "error writing $writing_output.tmp: $!\n";
+}
+
+sub start_output_file ($) {
+ close_any_output_file();
+ ($writing_output) = @_;
+ die "$writing_output ?" if $output_files{$writing_output}++;
+ my $tmp = "$writing_output.tmp";
+ open O, ">", $tmp or die "create $tmp: $!\n";
+ o "# autogenerated - do not edit\n";
+}
+
+sub install_output_files () {
+ close_any_output_file();
+ foreach my $f (sort keys %output_files) {
+ rename "$f.tmp", $f or die "install new $f: $!\n";
+ }
}
sub write_makefile ($$) {
my ($dir_prefix,$depth) = @_;
+ #print STDERR "write_makefile @_\n";
start_output_file("${dir_prefix}Makefile");
my $cd = $depth ? join('/', ('..',) x $depth) : '.';
o <<END;
default: all
%:
- $(MAKE) -C $cd ${dir_prefix}$@
+ \$(MAKE) -C $cd -f subdirs.mk ${dir_prefix}\$@
END
}
my ($dir_prefix, $dir_suffix, $dir_name,
$var_prefix, $targets) = @_;
+ #use Data::Dumper;
+ #print STDERR "filter @_\n";
+
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 $lc_re = qr{[a-z][-+,0-9_a-z]*(?=\W)};
my $esclit = '&';
my $esc = '\\&';
if ($2) { o $esclit; next; }
s{^$esc}{} or die "$_ ?";
if (s{^$esc}{}) { o "$esclit$esclit" }
- elsif (m{^TARGETS(?:_[0-9a-zA-Z_]+)?(?=\W)}{}) {
- my $t = $2 // 'all';
- o target_varname($varname_prefix, $t);
+ elsif (s{^TARGETS(?:_([0-9a-zA-Z_]+))?(?=\W)}{}) {
+ my $t = $1 // 'all';
+ o target_varname($var_prefix, $t);
$targets->{$t}=1;
}
- elsif (m{^(?=$caps_re)}) { o "${var_prefix}_" }
+ elsif (m{^(?=$caps_re)}) { o $var_prefix }
elsif (m{^(?=$lc_re)}) { o $dir_prefix }
- elsif (s{^_}{}) { o "${var_prefix}_" }
+ elsif (s{^_}{}) { o $var_prefix }
elsif (s{^/}{}) { o $dir_prefix }
elsif (s{^=_}{}) { o $var_prefix }
elsif (s{^=/}{}) { o $dir_name }
elsif (s{^\^}{}) { o "\$(top_srcdir)${dir_suffix}" }
elsif (s{^\}}{}) { o "\$(abs_top_srcdir)${dir_suffix}" }
- elsif (s{^(?:[ \t]+([~^]))?(?=[ \t]){}}{}) {
+ elsif (s{^(?:[ \t]+([~^]))?(?=[ \t])}{}) {
my $prefix =
!$1 ? $dir_prefix :
$1 eq '~' ? '$(abs_top_srcdir)'.$dir_suffix :
}
}
+sub process_subtree ($$);
sub process_subtree ($$) {
# => list of descendants (in form SUBDIR/)
# recursive, children first
- my ($node, $path);
+ my ($node, $path) = @_;
+
+ #use Data::Dumper;
+ #print STDERR Dumper(\@_);
my $dir_prefix = join '', map { "$_/" } @$path;
my $dir_suffix = join '', map { "/$_" } @$path;
my $dir_name = join '/', @$path ? @$path : '.';
- my $var_prefix = map { "${_}_" } @$path ? @$path : qw(TOP);
+ my $var_prefix = join '', map { "${_}_" } @$path ? @$path : qw(TOP);
- write_makefile($subdir, scalar @$path);
+ write_makefile($dir_prefix, scalar @$path);
my %targets = qw(all 1);
my @child_subdirs;
my @childpath = (@$path, $child->[0]);
push @child_subdirs, join '/', @childpath;
$targets{$_}++ foreach
- process_subtree($child, [ ]);
+ process_subtree($child, \@childpath);
}
- start_output_file("$subdir/Subdir.mk.tmp");
+ start_output_file("${dir_prefix}Subdir.mk.tmp");
filter_subdir_mk($dir_prefix, $dir_suffix, $dir_name,
$var_prefix, \%targets);
+ o "\n";
+
my @targets = sort keys %targets;
foreach my $target (@targets) {
- my $target_varname = target_varname($var_prefix, target);
- print O <<END;
-${dprefix}${target}: \$($target_varname)
-END
- if (@child_subdirs) {
- print O "${dprefix}${target}:";
- foreach my $child_subdir (@child_subdirs) {
- print O " $child_subdir/$target";
- }
- print O "\n";
+ my $target_varname = target_varname($var_prefix, $target);
+ print O "${dir_prefix}${target}: \$($target_varname)";
+ foreach my $child_subdir (@child_subdirs) {
+ print O " $child_subdir/$target";
}
+ print O "\n";
}
return @targets;
sub process_tree() {
process_subtree($root, [ ]);
- start_output_file("subdirs.mk");
+ start_output_file("subdirs.mk.tmp");
+ foreach my $v (qw(top_srcdir abs_top_srcdir)) {
+ o "$v=\@$v@\n";
+ }
o "include Subdir.mk\n";
- foreach my $subdir (@ARGV) {
- o "include $subdir/Subdir.mk";
+ foreach my $subdir (@subdirs) {
+ o "include $subdir/Subdir.mk\n";
}
}