Index: Makefile
===================================================================
--- Makefile	(revision c6f46818216eec0350caacf6b00ce4c1b0572d98)
+++ Makefile	(revision bb285b42d51bf15d56c4d20ab034e93a463a8b7f)
@@ -26,4 +26,7 @@
 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
+
+# Just for this Makefile. Sub-makes will run in parallel if requested.
+.NOTPARALLEL:
 
 CSCOPE = cscope