Set CMAKE_OSX_ARCHITECTURES to target architecture (#891)

examples/third_party/WORKSPACE.bazel

@@ -17,39 +17,3 @@ local_repository(
 load("//:repositories.bzl", "repositories")
 
 repositories()
-
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-
-http_archive(
-    name = "build_bazel_rules_apple",
-    sha256 = "0052d452af7742c8f3a4e0929763388a66403de363775db7e90adecb2ba4944b",
-    url = "https://github.com/bazelbuild/rules_apple/releases/download/0.31.3/rules_apple.0.31.3.tar.gz",
-)
-
-load(
-    "@build_bazel_rules_apple//apple:repositories.bzl",
-    "apple_rules_dependencies",
-)
-
-apple_rules_dependencies()
-
-load(
-    "@build_bazel_rules_swift//swift:repositories.bzl",
-    "swift_rules_dependencies",
-)
-
-swift_rules_dependencies()
-
-load(
-    "@build_bazel_rules_swift//swift:extras.bzl",
-    "swift_rules_extra_dependencies",
-)
-
-swift_rules_extra_dependencies()
-
-load(
-    "@build_bazel_apple_support//lib:repositories.bzl",
-    "apple_support_dependencies",
-)
-
-apple_support_dependencies()

examples/third_party/cares/BUILD.bazel

@@ -1,4 +1,4 @@
-load("@build_bazel_rules_apple//apple:ios.bzl", "ios_build_test")
+load("@bazel_skylib//rules:build_test.bzl", "build_test")
 load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
 
 cc_test(
@@ -15,10 +15,17 @@ cc_library(
     deps = ["@cares"],
 )
 
-ios_build_test(
-    name = "test_c_ares_ios",
+apple_binary(
+    name = "ios_binary",
     minimum_os_version = "12.0",
+    platform_type = "ios",
+    deps = [":ios_lib"],
+)
+
+build_test(
+    name = "test_c_ares_ios",
     tags = ["manual"],
-    targets = ["ios_lib"],
+    target_compatible_with = ["@platforms//os:macos"],
+    targets = ["ios_binary"],
     visibility = ["//:__pkg__"],
 )

foreign_cc/built_tools/private/built_tools_framework.bzl

@@ -27,6 +27,7 @@ FOREIGN_CC_BUILT_TOOLS_ATTRS = {
 
 # Common fragments for all built_tool rules
 FOREIGN_CC_BUILT_TOOLS_FRAGMENTS = [
+    "apple",
     "cpp",
 ]
 

foreign_cc/private/framework.bzl

@@ -217,6 +217,7 @@ CC_EXTERNAL_RULE_ATTRIBUTES = {
 
 # A list of common fragments required by rules using this framework
 CC_EXTERNAL_RULE_FRAGMENTS = [
+    "apple",
     "cpp",
 ]
 
@@ -306,6 +307,7 @@ def get_env_prelude(ctx, lib_name, data_dependencies, target_root):
             "export DEVELOPER_DIR=\"$developer_dir_tmp\"",
             "sdkroot_tmp=\"$(xcrun --sdk {} --show-sdk-path)\"".format(sdk),
             "export SDKROOT=\"$sdkroot_tmp\"",
+            "export CMAKE_OSX_ARCHITECTURES={}".format(ctx.fragments.apple.single_arch_cpu),
         ])
 
     cc_toolchain = find_cpp_toolchain(ctx)