build: fix build in VPATH setup

* Makefile.am (t/ax/test-defs.sh): Ensure the 't/ax' directory exists,
before trying to create 'test-defs.sh' in there.  This is required in
VPATH builds.

Reported-by: Akim Demaille <akim@lrde.epita.fr>
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --git a/Makefile.am b/Makefile.am
index 20cb86d..fc37f44 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -414,6 +414,7 @@ EXTRA_DIST += t/ax/distcheck-hook-m4.am
 
 t/ax/test-defs.sh: t/ax/test-defs.in Makefile
        $(AM_V_at)rm -f $@ $@-t
+       $(AM_V_at)$(MKDIR_P) t/ax
        $(AM_V_GEN)in=t/ax/test-defs.in \
          && $(do_subst) <$(srcdir)/$$in >$@-t
        $(generated_file_finalize)