Merge pull request #33297 from apple/shahmishal/source-compat-preset-arm64

[Preset] Source compat suite cross compile for macOS arm64

Author: shahmishal

utils/build-presets.ini

@@ -2458,21 +2458,25 @@ swift-install-components=autolink-driver;compiler;clang-builtin-headers;stdlib;s
 mixin-preset=source_compat_suite_macos_base
 debug
 assertions
+cross-compile-hosts=macosx-arm64
 
 [preset: source_compat_suite_macos_RA]
 mixin-preset=source_compat_suite_macos_base
 release
 assertions
+cross-compile-hosts=macosx-arm64
 
 [preset: source_compat_suite_macos_R]
 mixin-preset=source_compat_suite_macos_base
 release
 no-assertions
+cross-compile-hosts=macosx-arm64
 
 [preset: source_compat_suite_macos_D]
 mixin-preset=source_compat_suite_macos_base
 debug
 no-assertions
+cross-compile-hosts=macosx-arm64
 
 [preset: source_compat_suite_linux_DA]
 mixin-preset=source_compat_suite_linux_base

utils/build-script

@@ -942,6 +942,9 @@ class BuildScriptInvocation(object):
             for product_class in impl_product_classes:
                 self._execute_install_action(host_target, product_class)
 
+        # Lipo...
+        self._execute_merged_host_lipo_action()
+
         # Non-build-script-impl products...
         # Note: currently only supports building for the host.
         for host_target in [self.args.host_target]:
@@ -981,9 +984,6 @@ class BuildScriptInvocation(object):
         for host_target in all_hosts:
             self._execute_package_action(host_target)
 
-        # Lipo...
-        self._execute_merged_host_lipo_action()
-
     def _execute_build_action(self, host_target, product_class):
         action_name = "{}-{}-build".format(host_target.name,
                                            product_class.product_name())

utils/recursive-lipo

@@ -63,6 +63,9 @@ def merge_lipo_files(src_root_dirs, file_list, copy_verbatim_subpaths,
         if all([os.path.islink(item) for item in file_paths]):
             # It's a symlink in all found instances, copy the link.
             print("-- Creating symlink %s" % dest_path)
+            # Remove symlink if it already exists
+            if os.path.islink(dest_path):
+                os.remove(dest_path)
             os.symlink(os.readlink(file_paths[0]), dest_path)
         elif all([os.path.isdir(item) for item in file_paths]):
             # It's a subdir in all found instances.