Added a BUILD file for wyhash.

This will make the build more closely resemble the google3
build.

The CMake output from this is a bit busted, but the build
does succeed.

BUILD

@@ -65,7 +65,6 @@ cc_library(
         "upb/table.int.h",
         "upb/upb.c",
         "upb/upb.int.h",
-        "third_party/wyhash/wyhash.h",
     ],
     hdrs = [
         "upb/decode.h",
@@ -75,7 +74,10 @@ cc_library(
     ],
     copts = UPB_DEFAULT_COPTS,
     visibility = ["//visibility:public"],
-    deps = [":port"],
+    deps = [
+        ":port",
+        "//third_party/wyhash",
+    ],
 )
 
 # Common support routines used by generated code.  This library has no
@@ -286,12 +288,10 @@ upb_amalgamation(
 
 cc_library(
     name = "amalgamation",
-    srcs = [
-        "upb.c",
-        "third_party/wyhash/wyhash.h",
-    ],
+    srcs = ["upb.c"],
     hdrs = ["upb.h"],
     copts = UPB_DEFAULT_COPTS,
+    deps = ["//third_party/wyhash"],
 )
 
 upb_amalgamation(
@@ -314,13 +314,10 @@ upb_amalgamation(
 
 cc_library(
     name = "php_amalgamation",
-    srcs = [
-        "php-upb.c",
-        "third_party/wyhash/wyhash.h",
-    ],
+    srcs = ["php-upb.c"],
     hdrs = ["php-upb.h"],
     copts = UPB_DEFAULT_COPTS,
-
+    deps = ["//third_party/wyhash"],
 )
 
 upb_amalgamation(
@@ -342,12 +339,10 @@ upb_amalgamation(
 
 cc_library(
     name = "ruby_amalgamation",
-    srcs = [
-        "ruby-upb.c",
-        "third_party/wyhash/wyhash.h",
-    ],
+    srcs = ["ruby-upb.c"],
     hdrs = ["ruby-upb.h"],
     copts = UPB_DEFAULT_COPTS,
+    deps = ["//third_party/wyhash"],
 )
 
 exports_files(

cmake/BUILD

@@ -28,6 +28,7 @@ genrule(
         "//:BUILD",
         "//:WORKSPACE",
         "//:cmake_files",
+        "//third_party/wyhash:cmake_files",
         ":cmake_files",
     ],
     outs = ["generated-in/CMakeLists.txt"],
@@ -84,6 +85,7 @@ sh_test(
     data = [
         ":cmake_files",
         "//:cmake_files",
+        "//third_party/wyhash:cmake_files",
     ],
     deps = ["@bazel_tools//tools/bash/runfiles"],
 )

cmake/CMakeLists.txt

@@ -71,13 +71,13 @@ add_library(upb
   ../upb/table.int.h
   ../upb/upb.c
   ../upb/upb.int.h
-  ../third_party/wyhash/wyhash.h
   ../upb/decode.h
   ../upb/encode.h
   ../upb/upb.h
   ../upb/upb.hpp)
 target_link_libraries(upb
-  port)
+  port
+  /third_party/wyhash)
 add_library(generated_code_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me INTERFACE)
 target_link_libraries(generated_code_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me INTERFACE
   table
@@ -150,5 +150,6 @@ add_library(upb_json
 target_link_libraries(upb_json
   upb
   upb_pb)
+add_library(wyhash INTERFACE)
 
 

cmake/make_cmakelists.py

@@ -280,6 +280,7 @@ globs = GetDict(converter)
 
 exec(open("WORKSPACE").read(), GetDict(WorkspaceFileFunctions(converter)))
 exec(open("BUILD").read(), GetDict(BuildFileFunctions(converter)))
+exec(open("third_party/wyhash/BUILD").read(), GetDict(BuildFileFunctions(converter)))
 
 with open(sys.argv[1], "w") as f:
   f.write(converter.convert())

third_party/wyhash/BUILD

@@ -0,0 +1,18 @@
+
+licenses(["unencumbered"])
+
+exports_files(["LICENSE"])
+
+cc_library(
+    name = "wyhash",
+    hdrs = ["wyhash.h"],
+    visibility = ["//:__pkg__"],
+)
+
+filegroup(
+    name = "cmake_files",
+    srcs = glob([
+        "**/*",
+    ]),
+    visibility = ["//cmake:__pkg__"],
+)