#
# $(srcdir)/subdirmk/generate [--srcdir=SRCDIR] [--] SUBDIR...
#
-# generates in each subdirectory from in each subdirectory
-# Subdir.mk.tmp Subdir.sd.mk
-# Makefile and included files
-# and in toplevel and in toplevel
-# main.mk.tmp Perdir.sd.mk
+# generates in each subdirectory
+# Subdir.mk.tmp
+# Makefile
+# and in toplevel
+# main.mk.tmp
use strict;
use POSIX;
s{/+$}{} foreach @subdirs;
-our $root = [ '.', [ ] ];
-# each node is [ 'relative subdir name', \@children ]
+our $root = [ '.', [ ], 1 ];
+# each node is [ 'relative subdir name', \@children, $mentioned ]
sub build_tree () {
foreach my $subdir (@subdirs) {
}
$node = $c;
}
+ $node->[2] = 1;
}
}
our $buffering_output;
our %output_files;
our %input_files;
+our @output_makefiles;
sub close_any_output_file() {
return unless defined $writing_output;
#print STDERR "write_makefile @_\n";
start_output_file("${dir_prefix}Makefile");
my $cd = $depth ? join('/', ('..',) x $depth) : '.';
+ my $suppress_templates=
+ '$(if $(filter-out clean real-clean, $(subdirmk_targets)),,'.
+ ' MAKEFILE_TEMPLATES=)';
o <<END;
default: all
-\$(MAKECMDGOALS) all: FORCE-ALWAYS-RUN
+\$(filter-out all,\$(MAKECMDGOALS)) all: run-main.mk
\@:
-Makefile FORCE-ALWAYS-RUN:
- \$(MAKE) -C $cd -f main.mk \$(addprefix ${dir_prefix},\$(or \$(MAKECMDGOALS),all))
+subdirmk_targets:=\$(or \$(MAKECMDGOALS),all)
+Makefile run-main.mk:
+ \$(MAKE) -C $cd -f main.mk \$(addprefix ${dir_prefix},\$(subdirmk_targets))$suppress_templates
.SUFFIXES:
-.PHONY: FORCE-ALWAYS-RUN
+.PHONY: run-main.mk
END
}
-sub process_input_mk ($$$$$$$$);
-sub process_input_mk ($$$$$$$$) {
- my ($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets,
- $f, $esclitr, $enoent_ok) = @_;
+our ($dir_prefix, $dir_suffix, $dir_name,
+ $var_prefix, $var_prefix_name);
+
+sub dir_prefix ($) {
+ my ($path) = @_;
+ join '', map { "$_/" } @$path;
+}
+
+sub set_dir_vars ($) {
+ my ($path) = @_;
+ $dir_prefix = dir_prefix($path);
+ $dir_suffix = join '', map { "/$_" } @$path;
+ $dir_name = join '/', @$path ? @$path : '.';
+ $var_prefix_name = join '_', @$path ? @$path : qw(TOP);
+ $var_prefix = "${var_prefix_name}_";
+}
+
+sub process_input_mk ($$$$);
+sub process_input_mk ($$$$) {
+ my ($targets, $f, $esclitr, $enoent_ok) = @_;
my $caps_re = qr{[A-Z]};
my $lc_re = qr{[a-z]};
}
$input_files{$f}++;
+ my %srcdirmap = (
+ '^' => "\$(top_srcdir)${dir_suffix}",
+ '~' => "\$(top_srcdir)",
+ );
my %pfxmap = (
'' => $dir_prefix,
- '^' => "\$(top_srcdir)${dir_suffix}/",
- '~' => "\$(top_srcdir)/",
);
+ $pfxmap{$_} = $srcdirmap{$_}.'/' foreach keys %srcdirmap;
while (<$input>) {
- if (s#^\s*$esc\:##) {
+ if (s#^\s*$esc\:changequote\s+(\S+)\s+$##) {
+ $$esclitr = $1;
+ $set_esc->();
+ next;
+ } elsif (s#^\s*$esc\:(?=(-?)include)##) {
$buffering_output='';
+ } elsif (m#^\s*$esc\:([a-z][-0-9a-z_]*)#) {
+ die "unknown directive $1";
+ } elsif (s{^\s*${esc}TARGETS(?:_([0-9a-zA-Z_]+))?(?=\W)}{}) {
+ my $t = $1 // 'all';
+ o target_varname($var_prefix, $t);
+ $targets->{$t} //= [ ];
}
for (;;) {
- unless (s{^(.*?)(\\)?(?=$esc)}{}) { o $_; last; }
+ unless (s{^(.*?)$esc}{}) { o $_; last; }
o $1;
- if ($2) { s#^$esc##; o $$esclitr; next; }
- s{^$esc}{} or die "$_ ?";
- if (s{^$esc}{}) { o "$$esclitr$$esclitr" }
- elsif (s{^TARGETS(?:_([0-9a-zA-Z_]+))?(?=\W)}{}) {
- my $t = $1 // 'all';
- o target_varname($var_prefix, $t);
- $targets->{$t} //= [ ];
- }
+ if (s{^\\$esc}{}) { o "$$esclitr" }
+ elsif (s{^\\\$}{}) { o '$' }
+ elsif (s{^\\\s+$}{}) { }
+ elsif (s{^$esc}{}) { o "$$esclitr$$esclitr" }
elsif (m{^(?=$caps_re)}) { o $var_prefix }
+ elsif (s{^\$([A-Za-z]\w+)}{}) { o "\$(${var_prefix}$1)" }
elsif (s{^([~^]?)(?=$lc_re)}{}) { o $pfxmap{$1} }
elsif (s{^_}{}) { o $var_prefix }
- elsif (s{^=_}{}) { o $var_prefix }
+ elsif (s{^=}{}) { o $var_prefix_name }
elsif (s{^([~^]?)/}{}) { o $pfxmap{$1} }
- elsif (s{^=/}{}) { o $dir_name }
+ elsif (s{^\.}{}) { o $dir_name }
+ elsif (s{^([~^])\.}{}) { o $srcdirmap{$1} }
elsif (s{^([~^]?)(?=[ \t])}{}) {
my $prefix = $pfxmap{$1} // die;
my $after='';
} elsif (s{^![ \t]+}{}) {
o $_;
$_ = '';
- } elsif (s{^!(\S+)(?:[ \t]+|$)}{}) {
- $$esclitr = $1;
- $set_esc->();
} else {
die "bad escape $$esclitr$_ ";
}
$buffering_output=undef;
if (m#^(-?)include\s+(\S+)\s+$#) {
my $subf = "$srcdir/$2";
- process_input_mk($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets,
- $subf, $esclitr, $1);
+ process_input_mk($targets, $subf, $esclitr, $1);
o "\n";
} else {
- die "unknown directive $_ ";
+ die "internal error buffering directive $_ ";
}
}
}
close $input or die "close $f: $!\n";
}
-sub filter_subdir_mk ($$$$$) {
- my ($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets) = @_;
+sub filter_subdir_mk ($) {
+ my ($targets) = @_;
#use Data::Dumper;
#print STDERR "filter @_\n";
my $pi = sub {
my ($f, $enoentok) = @_;
- process_input_mk($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, $targets,
- "${srcdir}/$f", \$esclit, $enoentok);
+ process_input_mk($targets, "${srcdir}/$f", \$esclit, $enoentok);
};
$pi->("${dir_prefix}Subdir.sd.mk", 0);
$pi->("Perdir.sd.mk", 1);
sub process_subtree ($$);
sub process_subtree ($$) {
- # => list of descendants (in form SUBDIR/)
+ # => list of targets (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);
+ my $dir_prefix = dir_prefix($path);
+ # ^ this is the only var which we need before we come back from
+ # the recursion.
+ push @output_makefiles, "${dir_prefix}Subdir.mk";
write_makefile($dir_prefix, scalar @$path);
my %targets = (all => []);
push @{ $targets{$_} }, $child_subdir foreach
process_subtree($child, \@childpath);
}
+
+ set_dir_vars($path);
start_output_file("${dir_prefix}Subdir.mk.tmp");
- filter_subdir_mk($dir_prefix, $dir_suffix, $dir_name,
- $var_prefix, \%targets);
+ if ($node->[2]) {
+ filter_subdir_mk(\%targets);
+ } else {
+ my $sdmk = "${dir_prefix}Subdir.sd.mk";
+ if (stat $sdmk) {
+ die "$sdmk unexpectedly exists (${dir_prefix} not mentioned)";
+ } elsif ($!==ENOENT) {
+ } else {
+ die "stat $sdmk: $!";
+ }
+ }
o "\n";
}
print O "\n";
}
+ if (@targets) {
+ print O ".PHONY:";
+ print O " ${dir_prefix}${_}" foreach @targets;
+ print O "\n";
+ }
return @targets;
}
}
o "SUBDIRMK_MAKEFILES :=\n";
o "MAKEFILE_TEMPLATES :=\n";
- o "SUBDIRMK_MAKEFILES += Subdir.mk\n";
- foreach my $subdir (@subdirs) {
- o "SUBDIRMK_MAKEFILES += $subdir/Subdir.mk\n";
+ foreach my $mf (@output_makefiles) {
+ o "SUBDIRMK_MAKEFILES += $mf\n";
}
foreach my $input (sort keys %input_files) {
o "MAKEFILE_TEMPLATES += $input\n";
}
- o "include \$(SUBDIRMK_MAKEFILES)";
+ o "include \$(SUBDIRMK_MAKEFILES)\n";
}
build_tree();
~ian / subdirmk.git / blobdiff