+++ /dev/null
-#!/usr/bin/perl -w
-#
-# subdirmk - &-filter (makefile generation program)
-# Copyright 2019 Ian Jackson
-# SPDX-License-Identifier: LGPL-2.0-or-later
-#
-# $(srcdir)/subdirmk/generate [--srcdir=SRCDIR] [--] SUBDIR...
-#
-# generates in each subdirectory from in each subdirectory
-# Subdir.mk.tmp Subdir.sd.mk
-# Makefile and included files
-# and in toplevel and in toplevel
-# main.mk.tmp Perdir.sd.mk
-
-use strict;
-use POSIX;
-
-print "$0 @ARGV\n" or die $!;
-
-our $srcdir='.';
-
-while (@ARGV && $ARGV[0] =~ m/^-/) {
- $_ = shift @ARGV;
- last if $_ eq '--';
- if (s/^--srcdir=//) {
- $srcdir=$';
- } else {
- die "$0: unknown option \`$_'\n";
- }
-}
-our @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 ($$) {
- my ($var_prefix, $target) = @_;
- return $var_prefix.'TARGETS'.($target eq 'all' ? '' : "_$target");
-}
-
-our $writing_output;
-our $buffering_output;
-our %output_files;
-our %input_files;
-
-sub close_any_output_file() {
- return unless defined $writing_output;
- O->error and die "error writing $writing_output.tmp: $! (?)\n";
- close O or die "error closing $writing_output.tmp: $!\n";
- $writing_output = undef;
-}
-
-sub o {
- if (defined $buffering_output) {
- $buffering_output .= $_ foreach @_;
- return;
- }
- die unless defined $writing_output;
- print O @_ or die "error writing $writing_output.tmp: $!\n";
-}
-
-sub start_output_file ($) {
- close_any_output_file();
- ($writing_output) = @_;
- die "$writing_output ?" if $output_files{$writing_output}++;
- my $tmp = "$writing_output.tmp";
- open O, ">", $tmp or die "create $tmp: $!\n";
- o "# autogenerated - do not edit\n";
-}
-
-sub install_output_files () {
- close_any_output_file();
- foreach my $f (sort keys %output_files) {
- rename "$f.tmp", $f or die "install new $f: $!\n";
- }
-}
-
-sub write_makefile ($$) {
- 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
- \@:
-Makefile FORCE-ALWAYS-RUN:
- \$(MAKE) -C $cd -f main.mk \$(addprefix ${dir_prefix},\$(or \$(MAKECMDGOALS),all))
-.SUFFIXES:
-.PHONY: FORCE-ALWAYS-RUN
-END
-}
-
-sub process_input_mk ($$$$$$$$);
-sub process_input_mk ($$$$$$$$) {
- my ($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets,
- $f, $esclitr, $enoent_ok) = @_;
-
- my $caps_re = qr{[A-Z]};
- my $lc_re = qr{[a-z]};
-
- my $esc;
- my $set_esc = sub {
- $esc = $$esclitr;
- $esc =~ s/\W/\\$&/g;
- };
- $set_esc->();
-
- my $input = new IO::File $f, '<';
- if (!$input) {
- die "open $f: $!\n" unless $!==ENOENT && $enoent_ok;
- return;
- }
- $input_files{$f}++;
-
- while (<$input>) {
- if (s#^\s*$esc\:##) {
- $buffering_output='';
- }
- for (;;) {
- unless (s{^(.*?)(\\)?(?=$esc)}{}) { o $_; last; }
- o $1;
- if ($2) { o $$esclitr; next; }
- s{^$esc}{} or die "$_ ?";
- if (s{^$esc}{}) { o "$$esclitr$$esclitr" }
- elsif (s{^TARGETS(?:_([0-9a-zA-Z_]+))?(?=\W)}{}) {
- my $t = $1 // 'all';
- o target_varname($var_prefix, $t);
- $targets->{$t} //= [ ];
- }
- elsif (m{^(?=$caps_re)}) { o $var_prefix }
- elsif (m{^(?=$lc_re)}) { o $dir_prefix }
- elsif (s{^_}{}) { o $var_prefix }
- elsif (s{^/}{}) { o $dir_prefix }
- elsif (s{^=_}{}) { o $var_prefix }
- elsif (s{^=/}{}) { o $dir_name }
- elsif (s{^\^}{}) { o "\$(top_srcdir)${dir_suffix}" }
- elsif (s{^\}}{}) { o "\$(abs_top_srcdir)${dir_suffix}" }
- elsif (s{^(?:[ \t]+([~^]))?(?=[ \t])}{}) {
- my $prefix =
- !$1 ? $dir_prefix :
- $1 eq '~' ? '$(abs_top_srcdir)'.$dir_suffix :
- $1 eq '~' ? '$(abs_top_srcdir)'.$dir_suffix :
- die;
- my $after='';
- if (m{([ \t])$esc}) { ($_,$after) = ($`, $1.$'); }
- s{(?<=[ \t])(?=\S)(?!\\\s*$)}{$prefix}g;
- o $_;
- $_ = $after;
- } elsif (s{^\#}{}) {
- $_ = '';
- } elsif (s{^![ \t]+}{}) {
- o $_;
- $_ = '';
- } elsif (s{^!(\S+)(?:[ \t]+|$)}{}) {
- $$esclitr = $1;
- $set_esc->();
- } else {
- die "bad escape $$esclitr$_ ";
- }
- }
- if (defined $buffering_output) {
- $_=$buffering_output;
- $buffering_output=undef;
- if (m#^(-?)include\s+(\S+)\s+$#) {
- my $subf = "$srcdir/$2";
- process_input_mk($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets,
- $subf, $esclitr, $1);
- o "\n";
- } else {
- die "unknown directive $_ ";
- }
- }
- }
- $input->error and die "read $f: $!\n";
- close $input or die "close $f: $!\n";
-}
-
-sub filter_subdir_mk ($$$$$) {
- my ($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets) = @_;
-
- #use Data::Dumper;
- #print STDERR "filter @_\n";
-
- my $esclit = '&';
-
- my $pi = sub {
- my ($f, $enoentok) = @_;
- process_input_mk($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets,
- "${srcdir}/$f", \$esclit, $enoentok);
- };
- $pi->("${dir_prefix}Subdir.sd.mk", 0);
- $pi->("Perdir.sd.mk", 1);
-}
-
-sub process_subtree ($$);
-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 = (all => []);
- foreach my $child (@{ $node->[1] }) {
- my @childpath = (@$path, $child->[0]);
- my $child_subdir = join '/', @childpath;
- mkdir $child_subdir or $!==EEXIST or die "mkdir $child_subdir: $!";
- push @{ $targets{$_} }, $child_subdir foreach
- process_subtree($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 (@{ $targets{$target} }) {
- print O " $child_subdir/$target";
- }
- print O "\n";
- }
-
- return @targets;
-}
-
-sub process_tree() {
- process_subtree($root, [ ]);
- start_output_file("main.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";
- }
- foreach my $input (sort keys %input_files) {
- o "MAKEFILE_TEMPLATES += $input\n";
- }
- o "include \$(MAKEFILES)";
-}
-
-build_tree();
-process_tree();
-install_output_files();
~ianmdlvl / secnet.git / blobdiff