tests/filter: Add .../sub/dir

[subdirmk.git] / generate

diff --git a/generate b/generate
index 486bdc54e1c888b7be9cee539918296651cc8010..14deda4e281dc35c42272019a76af253bec22b3e 100755 (executable)
--- a/generate
+++ b/generate
@@ -32,8 +32,8 @@ our @subdirs = @ARGV;
 
 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) {
@@ -47,6 +47,7 @@ sub build_tree () {
            }
            $node = $c;
        }
+       $node->[2] = 1;
     }
 }
 
@@ -97,14 +98,18 @@ sub write_makefile ($$) {
     #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
-%:     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
 }
 
@@ -131,6 +136,12 @@ sub process_input_mk ($$$$$$$$) {
     }
     $input_files{$f}++;
 
+    my %pfxmap = (
+                 ''  => $dir_prefix,
+                 '^' => "\$(top_srcdir)${dir_suffix}/",
+                 '~' => "\$(top_srcdir)/",
+                );
+
     while (<$input>) {
        if (s#^\s*$esc\:##) {
            $buffering_output='';
@@ -138,7 +149,7 @@ sub process_input_mk ($$$$$$$$) {
        for (;;) {
            unless (s{^(.*?)(\\)?(?=$esc)}{}) { o $_; last; }
            o $1;
-           if ($2) { o $$esclitr; next; }
+           if ($2) { s#^$esc##; o $$esclitr; next; }
            s{^$esc}{} or die "$_ ?";
            if (s{^$esc}{}) { o "$$esclitr$$esclitr" }
            elsif (s{^TARGETS(?:_([0-9a-zA-Z_]+))?(?=\W)}{}) {
@@ -147,19 +158,13 @@ sub process_input_mk ($$$$$$$$) {
                $targets->{$t} //= [ ];
            }
            elsif (m{^(?=$caps_re)}) { o $var_prefix }
-           elsif (m{^(?=$lc_re)}) { o $dir_prefix }
+           elsif (s{^([~^]?)(?=$lc_re)}{}) { o $pfxmap{$1} }
            elsif (s{^_}{}) { o $var_prefix }
-           elsif (s{^/}{}) { o $dir_prefix }
            elsif (s{^=_}{}) { o $var_prefix }
+           elsif (s{^([~^]?)/}{}) { o $pfxmap{$1} }
            elsif (s{^=/}{}) { o $dir_name }
-           elsif (s{^\^}{}) { o "\$(top_srcdir)${dir_suffix}" }
-           elsif (s{^\}}{}) { o "\$(abs_top_srcdir)${dir_suffix}" }
-           elsif (s{^(?:[ \t]+([~^]))?(?=[ \t])}{}) {
-               my $prefix =
-                   !$1       ? $dir_prefix                     :
-                   $1 eq '~' ? '$(abs_top_srcdir)'.$dir_suffix :
-                   $1 eq '~' ? '$(abs_top_srcdir)'.$dir_suffix :
-                   die;
+           elsif (s{^([~^]?)(?=[ \t])}{}) {
+               my $prefix = $pfxmap{$1} // die;
                my $after='';
                if (m{([ \t])$esc}) { ($_,$after) = ($`, $1.$'); }
                s{(?<=[ \t])(?=\S)(?!\\\s*$)}{$prefix}g;
@@ -240,8 +245,18 @@ sub process_subtree ($$) {
     }
     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($dir_prefix, $dir_suffix, $dir_name,
+                        $var_prefix, \%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";
 
@@ -254,6 +269,11 @@ sub process_subtree ($$) {
        }
        print O "\n";
     }
+    if (@targets) {
+       print O ".PHONY:";
+       print O " ${dir_prefix}${_}" foreach @targets;
+       print O "\n";
+    }
 
     return @targets;
 }
@@ -264,14 +284,16 @@ sub process_tree() {
     foreach my $v (qw(top_srcdir abs_top_srcdir)) {
        o "$v=\@$v@\n";
     }
-    o "MAKEFILES += Subdir.mk\n";
+    o "SUBDIRMK_MAKEFILES :=\n";
+    o "MAKEFILE_TEMPLATES :=\n";
+    o "SUBDIRMK_MAKEFILES += Subdir.mk\n";
     foreach my $subdir (@subdirs) {
-       o "MAKEFILES += $subdir/Subdir.mk\n";
+       o "SUBDIRMK_MAKEFILES += $subdir/Subdir.mk\n";
     }
     foreach my $input (sort keys %input_files) {
        o "MAKEFILE_TEMPLATES += $input\n";
     }
-    o "include \$(MAKEFILES)";
+    o "include \$(SUBDIRMK_MAKEFILES)\n";
 }
 
 build_tree();