Move Apple toolchain setup to apple_support

This moves the CC toolchain for building Apple platforms besides macOS to the apple_support repo bazelbuild/apple_support#113

The default unix toolchain is now used if someone wants to build for macOS without the apple_support toolchain, but it doesn't handle as many platform specific features as the previous toolchain.

Fixes bazelbuild#15041

Closes bazelbuild#16619.

PiperOrigin-RevId: 515546196
Change-Id: Ia54b53e7093c1edbfe8276730aaed5a11a94a027

.bazelci/postsubmit.yml

@@ -202,7 +202,6 @@ tasks:
       - "//third_party/ijar/..."
       - "//tools/android/..."
       - "//tools/aquery_differ/..."
-      - "//tools/osx/crosstool/..."
       - "//tools/python/..."
       # C++ coverage is not supported on macOS yet.
       - "-//src/test/shell/bazel:bazel_cc_code_coverage_test"
@@ -266,7 +265,6 @@ tasks:
       - "//third_party/ijar/..."
       - "//tools/android/..."
       - "//tools/aquery_differ/..."
-      - "//tools/osx/crosstool/..."
       - "//tools/python/..."
       # C++ coverage is not supported on macOS yet.
       - "-//src/test/shell/bazel:bazel_cc_code_coverage_test"

.bazelci/presubmit.yml

@@ -192,7 +192,6 @@ tasks:
       - "//third_party/ijar/..."
       - "//tools/android/..."
       - "//tools/aquery_differ/..."
-      - "//tools/osx/crosstool/..."
       - "//tools/python/..."
       # Re-enable once fixed: https://github.com/bazelbuild/bazel/issues/8162
       - "-//src/java_tools/buildjar/..."
@@ -256,7 +255,6 @@ tasks:
       - "//third_party/ijar/..."
       - "//tools/android/..."
       - "//tools/aquery_differ/..."
-      - "//tools/osx/crosstool/..."
       - "//tools/python/..."
       # Re-enable once fixed: https://github.com/bazelbuild/bazel/issues/8162
       - "-//src/java_tools/buildjar/..."

src/create_embedded_tools.py

@@ -42,8 +42,6 @@
     ('*def_parser.exe', lambda x: 'tools/def_parser/def_parser.exe'),
     ('*zipper.exe', lambda x: 'tools/zip/zipper/zipper.exe'),
     ('*zipper', lambda x: 'tools/zip/zipper/zipper'),
-    ('*xcode*make_hashed_objlist.py',
-     lambda x: 'tools/objc/make_hashed_objlist.py'),
     ('*xcode*xcode-locator', lambda x: 'tools/objc/xcode-locator'),
     ('*src/tools/xcode/*', lambda x: 'tools/objc/' + os.path.basename(x)),
     # --experimental_sibling_repository_layout=false

src/main/starlark/builtins_bzl/common/objc/objc_library.bzl

@@ -19,6 +19,7 @@ load("@_builtins//:common/objc/attrs.bzl", "common_attrs")
 load("@_builtins//:common/objc/objc_common.bzl", "extensions")
 load("@_builtins//:common/objc/transitions.bzl", "apple_crosstool_transition")
 load("@_builtins//:common/cc/cc_helper.bzl", "cc_helper")
+load(":common/cc/cc_common.bzl", "cc_common")
 load(":common/cc/cc_info.bzl", "CcInfo")
 
 objc_internal = _builtins.internal.objc_internal
@@ -55,6 +56,15 @@ def _objc_library_impl(ctx):
     _validate_attributes(srcs = ctx.attr.srcs, non_arc_srcs = ctx.attr.non_arc_srcs, label = ctx.label)
 
     cc_toolchain = cc_helper.find_cpp_toolchain(ctx)
+    feature_configuration = cc_common.configure_features(
+        ctx = ctx,
+        cc_toolchain = cc_toolchain,
+        requested_features = ctx.features,
+        unsupported_features = ctx.disabled_features,
+    )
+
+    if not cc_common.action_is_enabled(feature_configuration = feature_configuration, action_name = "objc-compile"):
+        fail("Compiling objc_library targets requires the Apple CC toolchain which can be found here: https://github.com/bazelbuild/apple_support")
 
     common_variables = compilation_support.build_common_variables(
         ctx = ctx,

src/test/java/com/google/devtools/build/lib/packages/util/MockObjcSupport.java

@@ -39,8 +39,6 @@ public final class MockObjcSupport {
           "tvos_x86_64",
           "tvos_arm64");
 
-  private static final ImmutableList<String> DEFAULT_OSX_CROSSTOOL_DEPS_DIRS =
-      ImmutableList.of("third_party/bazel/tools/osx/crosstool");
   public static final String DEFAULT_OSX_CROSSTOOL_DIR = "tools/osx/crosstool";
   private static final String MOCK_OSX_TOOLCHAIN_CONFIG_PATH =
       "com/google/devtools/build/lib/packages/util/mock/osx_cc_toolchain_config.bzl";
@@ -235,9 +233,6 @@ public static void setup(MockToolsConfig config) throws IOException {
   public static void setupCcToolchainConfig(
       MockToolsConfig config, CcToolchainConfig.Builder ccToolchainConfig) throws IOException {
     if (config.isRealFileSystem()) {
-      for (String depDir : DEFAULT_OSX_CROSSTOOL_DEPS_DIRS) {
-        config.linkTools(depDir);
-      }
       config.linkTools(DEFAULT_OSX_CROSSTOOL_DIR);
     } else {
       CcToolchainConfig toolchainConfig = ccToolchainConfig.build();
@@ -261,9 +256,6 @@ public static void setupCcToolchainConfig(
 
   public static void setupCcToolchainConfig(MockToolsConfig config) throws IOException {
     if (config.isRealFileSystem()) {
-      for (String depDir : DEFAULT_OSX_CROSSTOOL_DEPS_DIRS) {
-        config.linkTools(depDir);
-      }
       config.linkTools(DEFAULT_OSX_CROSSTOOL_DIR);
     } else {
       new Crosstool(

src/test/java/com/google/devtools/build/lib/packages/util/mock/osx_cc_toolchain_config.bzl

@@ -1223,6 +1223,7 @@ def _impl(ctx):
 
     if (ctx.attr.cpu == "x64_windows"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1255,6 +1256,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "ios_arm64"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1287,6 +1289,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "tvos_arm64"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1319,6 +1322,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "ios_armv7"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1351,6 +1355,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "watchos_armv7k"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1383,6 +1388,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "watchos_arm64_32"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1415,6 +1421,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "ios_i386"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1448,6 +1455,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "watchos_i386"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1481,6 +1489,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "watchos_x86_64"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1514,6 +1523,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "ios_x86_64"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1547,6 +1557,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "tvos_x86_64"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(
@@ -1580,6 +1591,7 @@ def _impl(ctx):
         )
     elif (ctx.attr.cpu == "darwin_x86_64"):
         objc_compile_action = action_config(
+            enabled = True,
             action_name = ACTION_NAMES.objc_compile,
             flag_sets = [
                 flag_set(

src/test/py/bazel/bzlmod/bzlmod_query_test.py

@@ -92,7 +92,7 @@ def testAqueryModuleRepoTargetsBelow(self):
                                  allow_failure=False)
     # This label is stringified into a "purpose" in some action before it
     # reaches aquery code, so can't decanonicalize it.
-    self.assertEqual(stdout[0], 'cc_library-compile for @aaa~1.0//:lib_aaa')
+    self.assertIn('cc_library-compile for @aaa~1.0//:lib_aaa', stdout)
     self.assertIn('Target: @my_repo//:lib_aaa', stdout)
 
   def testAqueryModuleRepoTransitiveDeps(self):

src/test/shell/bazel/apple/BUILD

@@ -38,7 +38,6 @@ sh_test(
         "//:workspace-file",
         "//src/test/shell/bazel:test-deps",
     ],
-    shard_count = 3,
     tags = ["no_windows"],
 )