Eliminate conflicting generating rules

Author: pcj

bzl/cpp/class.bzl

@@ -5,7 +5,8 @@ CLASS = struct(
         name = "cpp",
         short_name = "cpp",
         # cc_*.pb.* outputs need to output to genfiles (not binfiles)
-        # for some reason.
+        # for some reason.  Mentioned in
+        # http://bazel.io/docs/skylark/lib/globals.html#rule.output_to_genfiles.
         output_to_genfiles = True,
 
         protobuf = struct(

examples/helloworld/cpp/BUILD

@@ -6,6 +6,7 @@ load("//bzl:cpp/class.bzl", CPP = "CLASS")
 cc_test(
     name = "test",
     size = "small",
+    tags = ["exclusive"],
     srcs = ["greeter_client_test.cc"],
     copts = ["-Iexternal/gtest/include"],
     deps = [
@@ -31,22 +32,13 @@ cc_binary(
     name = "server",
     srcs = ["greeter_server.cc",],
     deps = ["//examples/helloworld/proto:cpp"],
-
-    # If this variant is used, the protos in proto:srcs will be copied
-    # to the same namespace as the calling build rule (in this case
-    # examples/helloworld/cpp) before protoc'ing, affecting the name
-    # of the compiled protobuf sources.  In this case the header
-    # include statements need to be changed to
-    # "examples/helloworld/cpp/helloworld.pb.h"...
-    #
-    #deps = [":protolib"],
 )
 
-cc_proto_library(
-    name = 'protolib',
-    protos = [
-        '//examples/helloworld/proto:srcs',
-    ],
-    with_grpc = True,
-    verbose = 0,
-)
+# cc_proto_library(
+#     name = 'protolib',
+#     protos = [
+#         '//examples/helloworld/proto:srcs',
+#     ],
+#     with_grpc = True,
+#     verbose = 0,
+# )

examples/helloworld/go/client/BUILD

@@ -12,14 +12,14 @@ go_binary(
     ] + GO.grpc.compile_deps,
 )
 
-# if you depend on this rule, the proto sources get copied to the
-# namespace of the calling BUILD file (examples/helloworld/go/client),
-# affecting the go "import" naming.
-go_proto_library(
-    name = 'protolib',
-    protos = [
-        '//examples/helloworld/proto:srcs',
-    ],
-    with_grpc = True,
-    verbose = 0,
-)
+# # if you depend on this rule, the proto sources get copied to the
+# # namespace of the calling BUILD file (examples/helloworld/go/client),
+# # affecting the go "import" naming.
+# go_proto_library(
+#     name = 'protolib',
+#     protos = [
+#         '//examples/helloworld/proto:srcs',
+#     ],
+#     with_grpc = True,
+#     verbose = 0,
+# )

examples/helloworld/proto/BUILD

@@ -48,11 +48,11 @@ cc_proto_library(
     with_grpc = True,
 )
 
-grpc_gateway_proto_library(
-    name = "gw",
-    protos = ["helloworld_gateway.proto"],
-    verbose = 0,
-)
+# grpc_gateway_proto_library(
+#     name = "gw",
+#     protos = ["helloworld_gateway.proto"],
+#     verbose = 0,
+# )
 
 # py_proto_library(
 #     name = "pylib",