Index: Makefile
===================================================================
--- Makefile	(revision c6f46818216eec0350caacf6b00ce4c1b0572d98)
+++ Makefile	(revision 0f963cba7b2dd43c6842c525c83b9a01d876d331)
@@ -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