-env.Program(["encode_alltypes.c", "alltypes.pb.c", "#common/pb_encode.o"])
-env.Program(["decode_alltypes.c", "alltypes.pb.c", "#common/pb_decode.o"])
+enc = env.Program(["encode_alltypes.c", "alltypes.pb.c", "#common/pb_encode.o"])
+dec = env.Program(["decode_alltypes.c", "alltypes.pb.c", "#common/pb_decode.o"])