#!/usr/bin/perl -w
#
-# $(srcdir)/build-aux/subdirmk-setup SUBDIR...
+# subdirmk - &-filter (makefile generation program)
+# Copyright 2019 Ian Jackson
+# SPDX-License-Identifier: LGPL-2.0-or-later
#
-# generates
-# main.mk.tmp
-# and in each subdirectory
-# Subdir.mk.tmp
-# Makefile
+# $(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;
-our $srcdir;
-our @subdirs = @ARGV;
+print "$0 @ARGV\n" or die $!;
-die unless $ARGV[0] eq '--srcdir';
-die unless @ARGV>=2;
-shift @ARGV;
-($srcdir, @subdirs) = @ARGV;
+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 $writing_output;
+our $buffering_output;
our %output_files;
+our %input_files;
sub close_any_output_file() {
return unless defined $writing_output;
}
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";
}
my $cd = $depth ? join('/', ('..',) x $depth) : '.';
o <<END;
default: all
- \@: \$@
%: FORCE-ALWAYS-RUN
- \$(MAKE) -C $cd -f main.mk ${dir_prefix}\$@
+ \@:
Makefile FORCE-ALWAYS-RUN:
- \@: \$@
+ \$(MAKE) -C $cd -f main.mk \$(addprefix ${dir_prefix},\$(or \$(MAKECMDGOALS),all))
.SUFFIXES:
+.PHONY: FORCE-ALWAYS-RUN
END
}
-sub filter_subdir_mk ($$$$$) {
+sub process_input_mk ($$$$$$$$);
+sub process_input_mk ($$$$$$$$) {
my ($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets) = @_;
+ $var_prefix, $targets,
+ $f, $esclitr, $enoent_ok) = @_;
- #use Data::Dumper;
- #print STDERR "filter @_\n";
+ my $caps_re = qr{[A-Z]};
+ my $lc_re = qr{[a-z]};
- my $in = "${dir_prefix}Subdir.mk.in";
- my $caps_re = qr{[A-Z][0-9_A-Z]*(?=\W)};
- my $lc_re = qr{[a-z][-+,0-9_a-z]*(?=\W)};
- my $esclit = '&';
- my $esc = '\\&';
+ my $esc;
+ my $set_esc = sub {
+ $esc = $$esclitr;
+ $esc =~ s/\W/\\$&/g;
+ };
+ $set_esc->();
- for my $f ($in, "Perdir.mk.in") {
- open I, '<', $f or die "open $f: $!\n";
- while (<I>) {
+ 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 $esclit; next; }
+ if ($2) { o $$esclitr; next; }
s{^$esc}{} or die "$_ ?";
- if (s{^$esc}{}) { o "$esclit$esclit" }
+ if (s{^$esc}{}) { o "$$esclitr$$esclitr" }
elsif (s{^TARGETS(?:_([0-9a-zA-Z_]+))?(?=\W)}{}) {
my $t = $1 // 'all';
o target_varname($var_prefix, $t);
- $targets->{$t}=1;
+ $targets->{$t} //= [ ];
}
elsif (m{^(?=$caps_re)}) { o $var_prefix }
elsif (m{^(?=$lc_re)}) { o $dir_prefix }
s{(?<=[ \t])(?=\S)(?!\\\s*$)}{$prefix}g;
o $_;
$_ = $after;
+ } elsif (s{^\#}{}) {
+ $_ = '';
} elsif (s{^![ \t]+}{}) {
o $_;
$_ = '';
- } elsif (s{^!(\pPosixWord+|\pPosixPunct+)[ \t]*}{}) {
- $esclit = $1;
- $esc = $esclit;
- $esc =~ s/\W/\\$&/g;
+ } elsif (s{^!(\S+)(?:[ \t]+|$)}{}) {
+ $$esclitr = $1;
+ $set_esc->();
} else {
- die "bad escape $esclit$_ ";
+ die "bad escape $$esclitr$_ ";
+ }
+ }
+ if (defined $buffering_output) {
+ $_=$buffering_output;
+ $buffering_output=undef;
+ if (m#^(-?)include\s+(\S+)\s+$#) {
+ my $subf = "$srcdir/$2";
+ process_input_mk($dir_prefix, $dir_suffix, $dir_name,
+ $var_prefix, $targets,
+ $subf, $esclitr, $1);
+ o "\n";
+ } else {
+ die "unknown directive $_ ";
}
}
- }
- I->error and die "read $f: $!\n";
}
+ $input->error and die "read $f: $!\n";
+ close $input or die "close $f: $!\n";
+}
+
+sub filter_subdir_mk ($$$$$) {
+ my ($dir_prefix, $dir_suffix, $dir_name,
+ $var_prefix, $targets) = @_;
+
+ #use Data::Dumper;
+ #print STDERR "filter @_\n";
+
+ my $esclit = '&';
+
+ my $pi = sub {
+ my ($f, $enoentok) = @_;
+ process_input_mk($dir_prefix, $dir_suffix, $dir_name,
+ $var_prefix, $targets,
+ "${srcdir}/$f", \$esclit, $enoentok);
+ };
+ $pi->("${dir_prefix}Subdir.sd.mk", 0);
+ $pi->("Perdir.sd.mk", 1);
}
sub process_subtree ($$);
write_makefile($dir_prefix, scalar @$path);
- my %targets = qw(all 1);
- my @child_subdirs;
+ my %targets = (all => []);
foreach my $child (@{ $node->[1] }) {
my @childpath = (@$path, $child->[0]);
- push @child_subdirs, join '/', @childpath;
- $targets{$_}++ foreach
+ 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");
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 $child_subdir (@child_subdirs) {
+ print O "${dir_prefix}${target}:: \$($target_varname)";
+ foreach my $child_subdir (@{ $targets{$target} }) {
print O " $child_subdir/$target";
}
print O "\n";
}
-
+
return @targets;
}
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)";
}
~ian / subdirmk.git / blobdiff