X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=build-aux%2Fsubdirmk-setup;h=e08de6eeebdfd78a78037b171ca52fd1948ce2e0;hb=6bdebd83b99b5078fa224236bec2babd9b6a5f54;hp=257479d32c97d8bba4683a140500ce1b86b6c692;hpb=00f1b5cef62e4eddd176d5de98ae01ccae5bed9c;p=subdirmk.git

diff --git a/build-aux/subdirmk-setup b/build-aux/subdirmk-setup
index 257479d..e08de6e 100755
--- a/build-aux/subdirmk-setup
+++ b/build-aux/subdirmk-setup
@@ -72,13 +72,13 @@ sub install_output_files () {
 
 sub write_makefile ($$) {
     my ($dir_prefix,$depth) = @_;
-    print STDERR "write_makefile @_\n";
+    #print STDERR "write_makefile @_\n";
     start_output_file("${dir_prefix}Makefile");
     my $cd = $depth ? join('/', ('..',) x $depth) : '.';
     o <<END;
 default: all
 %:
-	\$(MAKE) -C $cd ${dir_prefix}\$@
+	\$(MAKE) -C $cd -f subdirs.mk ${dir_prefix}\$@
 END
 }
 
@@ -86,37 +86,38 @@ sub filter_subdir_mk ($$$$$) {
     my ($dir_prefix, $dir_suffix, $dir_name,
 	$var_prefix, $targets) = @_;
 
-    use Data::Dumper;
-    print STDERR "filter @_\n";
+    #use Data::Dumper;
+    #print STDERR "filter @_\n";
 
-    my $in = "${srcdir}/${dir_prefix}Subdir.mk.in";
-    open I, '<', $in or die "open $in: $!\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 = '\\&';
 
-    while (<I>) {
+    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 = $2 // 'all';
+	    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{^(?=$caps_re)}) { o $var_prefix }
 	    elsif (m{^(?=$lc_re)}) { o $dir_prefix }
-	    elsif (s{^_}{}) { o "${var_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]){}}{}) {
+	    elsif (s{^(?:[ \t]+([~^]))?(?=[ \t])}{}) {
 		my $prefix =
 		    !$1       ? $dir_prefix                     :
 		    $1 eq '~' ? '$(abs_top_srcdir)'.$dir_suffix :
@@ -138,6 +139,8 @@ sub filter_subdir_mk ($$$$$) {
 		die "bad escape $esclit$_ ";
 	    }
 	}
+      }
+      I->error and die "read $f: $!\n";
     }
 }
 
@@ -147,8 +150,8 @@ sub process_subtree ($$) {
     # recursive, children first
     my ($node, $path) = @_;
 
-    use Data::Dumper;
-    print STDERR Dumper(\@_);
+    #use Data::Dumper;
+    #print STDERR Dumper(\@_);
 
     my $dir_prefix = join '', map { "$_/" } @$path;
     my $dir_suffix = join '', map { "/$_" } @$path;
@@ -170,19 +173,16 @@ sub process_subtree ($$) {
     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, $target);
-	print O <<END;
-${dir_prefix}${target}: \$($target_varname)
-END
-	if (@child_subdirs) {
-	    print O "${dir_prefix}${target}:";
-	    foreach my $child_subdir (@child_subdirs) {
-		print O " $child_subdir/$target";
-	    }
-	    print O "\n";
+	print O "${dir_prefix}${target}: \$($target_varname)";
+	foreach my $child_subdir (@child_subdirs) {
+	    print O " $child_subdir/$target";
 	}
+	print O "\n";
     }
     
     return @targets;
@@ -190,7 +190,10 @@ END
 
 sub process_tree() {
     process_subtree($root, [ ]);
-    start_output_file("subdirs.mk");
+    start_output_file("subdirs.mk.tmp");
+    foreach my $v (qw(top_srcdir abs_top_srcdir)) {
+	o "$v=\@$v@\n";
+    }
     o "include Subdir.mk\n";
     foreach my $subdir (@subdirs) {
 	o "include $subdir/Subdir.mk\n";