# changes, (and this could happen by simply calling "make" if the
# configure script is updated).
+# The top-level directory for the source, (the directory containing
+# the configure script). This may be different than the build
+# directory (the current directory at the time configure was run).
srcdir = ${srcdir}
+configure_options = $@
+
# We use vpath directives (rather than the VPATH variable) since the
# VPATH variable matches targets as well as prerequisites, (which is
# not useful since then a target left-over from a srcdir build would