Build

 1ex-y += ex.o
 2ex-y += a.o
 3ex-y += b.o
 4ex-y += b.o
 5ex-y += empty/
 6ex-y += empty2/
 7ex-y += inc.o
 8
 9libex-y += c.o
10libex-y += d.o
11libex-y += arch/