Create subdirs for generated sources even when not dep tracking.

* automake.in (handle_single_transform): If $object is derived
and lands in subdir, be sure to output a dirstamp dependency.
* tests/yacc5.test: Avoid falsely matching the dirstamp
dependency when grepping for a rule.
* tests/lex-subobj-nodep.test: New test.
* tests/Makefile.am (TESTS): Update.
* THANKS: Update.
Report by Ignacy Gawedzki.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/automake.in b/automake.in
index d56fbf7e8..d74730dcc 100755
--- a/automake.in
+++ b/automake.in
@@ -2053,6 +2053,15 @@ sub handle_single_transform ($$$$$%)
 	    # derived from is not.
 	    &push_dist_common ($object)
 	      unless ($topparent =~ /^(?:nobase_)?nodist_/);
+
+	    # If resulting derived source is in a subdir, we need to make
+	    # sure the subdir exists at build time.
+	    if ($object =~ /\//)
+	      {
+		my $dirstamp = require_build_directory_maybe ($object);
+		depend ($object, $dirstamp)
+		  if ($dirstamp);
+	      }
 	    next;
 	  }