+## Running the bison from this tarball. To generate our own parser,
+## but also to run the tests. Of course, you ought to keep a sane
+## version of Bison nearby...
+BISON = $(top_builddir)/tests/bison
+BISON_IN = $(top_srcdir)/tests/bison.in
+YACC = $(BISON) -y
+AM_YFLAGS = -d -v --warnings=all,error --report=all