Merge pull request #18202 from apolcyn/backport_fix

Backport #18201 to 1.19.x

third_party/cares/cares.BUILD

@@ -3,6 +3,11 @@ config_setting(
     values = {"cpu": "darwin"},
 )
 
+config_setting(
+    name = "darwin_x86_64",
+    values = {"cpu": "darwin_x86_64"},
+)
+
 config_setting(
     name = "windows",
     values = {"cpu": "x64_windows"},
@@ -54,6 +59,7 @@ genrule(
         ":ios_armv7s": ["@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h"],
         ":ios_arm64": ["@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h"],
         ":darwin": ["@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h"],
+        ":darwin_x86_64": ["@com_github_grpc_grpc//third_party/cares:config_darwin/ares_config.h"],
         ":windows": ["@com_github_grpc_grpc//third_party/cares:config_windows/ares_config.h"],
         ":android": ["@com_github_grpc_grpc//third_party/cares:config_android/ares_config.h"],
         "//conditions:default": ["@com_github_grpc_grpc//third_party/cares:config_linux/ares_config.h"],
@@ -164,4 +170,5 @@ cc_library(
     visibility = [
         "//visibility:public",
     ],
+    alwayslink = 1,
 )