+++ /dev/null
-#!/usr/bin/perl -w
-#
-# $(srcdir)/build-aux/subdirmk-setup SUBDIR...
-#
-# generates
-# Subdir.mk.tmp
-# Makefile.tmp
-
-use strict;
-
-our $srcdir;
-our @subdirs = @ARGV;
-
-die unless $ARGV[0] eq '--srcdir';
-die unless @ARGV>=2;
-shift @ARGV;
-($srcdir, @subdirs) = @ARGV;
-
-s{/+$}{} foreach @subdirs;
-
-our $root = [ '.', [ ] ];
-# each node is [ 'relative subdir name', \@children ]
-
-sub build_tree () {
- foreach my $subdir (@subdirs) {
- my @path = $subdir eq '.' ? () : split m{/+}, $subdir;
- my $node = $root;
- foreach my $d (@path) {
- my ($c,) = grep { $_->[0] eq $d } @{ $node->[1] };
- if (!$c) {
- $c = [ $d, [ ] ];
- push @{ $node->[1] }, $c;
- }
- $node = $c;
- }
- }
-}
-
-sub target_varname ($$) {
- my ($var_prefix, $target) = @_;
- return $var_prefix.'TARGETS'.($target eq 'all' ? '' : "_$target");
-}
-
-our $writing_output;
-our %output_files;
-
-sub close_any_output_file() {
- return unless defined $writing_output;
- O->error and die "error writing $writing_output.tmp: $! (?)\n";
- close O or die "error closing $writing_output.tmp: $!\n";
- $writing_output = undef;
-}
-
-sub o {
- die unless defined $writing_output;
- print O @_ or die "error writing $writing_output.tmp: $!\n";
-}
-
-sub start_output_file ($) {
- close_any_output_file();
- ($writing_output) = @_;
- die "$writing_output ?" if $output_files{$writing_output}++;
- my $tmp = "$writing_output.tmp";
- open O, ">", $tmp or die "create $tmp: $!\n";
- o "# autogenerated - do not edit\n";
-}
-
-sub install_output_files () {
- close_any_output_file();
- foreach my $f (sort keys %output_files) {
- rename "$f.tmp", $f or die "install new $f: $!\n";
- }
-}
-
-sub write_makefile ($$) {
- 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
- \@: \$@
-%: FORCE-ALWAYS-RUN
- \$(MAKE) -C $cd -f subdirs.mk ${dir_prefix}\$@
-Makefile FORCE-ALWAYS-RUN:
- \@: \$@
-.SUFFIXES:
-END
-}
-
-sub filter_subdir_mk ($$$$$) {
- my ($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets) = @_;
-
- #use Data::Dumper;
- #print STDERR "filter @_\n";
-
- my $in = "${dir_prefix}Subdir.mk.in";
- my $caps_re = qr{[A-Z][0-9_A-Z]*(?=\W)};
- my $lc_re = qr{[a-z][-+,0-9_a-z]*(?=\W)};
- my $esclit = '&';
- my $esc = '\\&';
-
- for my $f ($in, "Perdir.mk.in") {
- open I, '<', $f or die "open $f: $!\n";
- while (<I>) {
- for (;;) {
- unless (s{^(.*?)(\\)?(?=$esc)}{}) { o $_; last; }
- o $1;
- if ($2) { o $esclit; next; }
- s{^$esc}{} or die "$_ ?";
- if (s{^$esc}{}) { o "$esclit$esclit" }
- elsif (s{^TARGETS(?:_([0-9a-zA-Z_]+))?(?=\W)}{}) {
- my $t = $1 // 'all';
- o target_varname($var_prefix, $t);
- $targets->{$t}=1;
- }
- elsif (m{^(?=$caps_re)}) { o $var_prefix }
- elsif (m{^(?=$lc_re)}) { o $dir_prefix }
- elsif (s{^_}{}) { o $var_prefix }
- elsif (s{^/}{}) { o $dir_prefix }
- elsif (s{^=_}{}) { o $var_prefix }
- elsif (s{^=/}{}) { o $dir_name }
- elsif (s{^\^}{}) { o "\$(top_srcdir)${dir_suffix}" }
- elsif (s{^\}}{}) { o "\$(abs_top_srcdir)${dir_suffix}" }
- elsif (s{^(?:[ \t]+([~^]))?(?=[ \t])}{}) {
- my $prefix =
- !$1 ? $dir_prefix :
- $1 eq '~' ? '$(abs_top_srcdir)'.$dir_suffix :
- $1 eq '~' ? '$(abs_top_srcdir)'.$dir_suffix :
- die;
- my $after='';
- if (m{([ \t])$esc}) { ($_,$after) = ($`, $1.$'); }
- s{(?<=[ \t])(?=\S)(?!\\\s*$)}{$prefix}g;
- o $_;
- $_ = $after;
- } elsif (s{^![ \t]+}{}) {
- o $_;
- $_ = '';
- } elsif (s{^!(\pPosixWord+|\pPosixPunct+)[ \t]*}{}) {
- $esclit = $1;
- $esc = $esclit;
- $esc =~ s/\W/\\$&/g;
- } else {
- die "bad escape $esclit$_ ";
- }
- }
- }
- I->error and die "read $f: $!\n";
- }
-}
-
-sub process_subtree ($$);
-sub process_subtree ($$) {
- # => list of descendants (in form SUBDIR/)
- # recursive, children first
- 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 $var_prefix = join '', map { "${_}_" } @$path ? @$path : qw(TOP);
-
- write_makefile($dir_prefix, scalar @$path);
-
- my %targets = qw(all 1);
- my @child_subdirs;
- foreach my $child (@{ $node->[1] }) {
- my @childpath = (@$path, $child->[0]);
- push @child_subdirs, join '/', @childpath;
- $targets{$_}++ foreach
- process_subtree($child, \@childpath);
- }
- start_output_file("${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, $target);
- print O "${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.tmp");
- foreach my $v (qw(top_srcdir abs_top_srcdir)) {
- o "$v=\@$v@\n";
- }
- o "MAKEFILES += Subdir.mk\n";
- foreach my $subdir (@subdirs) {
- o "MAKEFILES += $subdir/Subdir.mk\n";
- }
- o "include \$(MAKEFILES)";
-}
-
-build_tree();
-process_tree();
-install_output_files();
~ian / subdirmk.git / blobdiff