[6.4.0] Cherry-pick commits to fix a Windows issue

.bazelci/build_bazel_binaries.yml

@@ -55,8 +55,7 @@ platforms:
       - "--host_copt=-w"
       - "-c"
       - "opt"
-      - "--cpu=x64_arm64_windows"
-      - "--incompatible_enable_cc_toolchain_resolution"
+      - "--config=windows_arm64"
     build_targets:
       - "//src:bazel.exe"
       - "//src:bazel_nojdk.exe"

.bazelrc

@@ -27,13 +27,19 @@ build:remote --config=ubuntu1804_java11
 
 build:macos --macos_minimum_os=10.11
 
+build:windows_arm64 --platforms=//:windows_arm64
+build:windows_arm64 --extra_toolchains=@local_config_cc//:cc-toolchain-arm64_windows
+
 # Enable Bzlmod
 build:bzlmod --experimental_enable_bzlmod
 
 # Enable Java 11 language features (https://github.com/bazelbuild/bazel/issues/14592)
 build --java_language_version=11
 build --tool_java_language_version=11
 
+# Manually enable cc toolchain resolution before it is flipped. https://github.com/bazelbuild/bazel/issues/7260
+build --incompatible_enable_cc_toolchain_resolution
+
 # User-specific .bazelrc
 try-import %workspace%/user.bazelrc
 

BUILD

@@ -220,6 +220,14 @@ platform(
     parents = ["@local_config_platform//:host"],
 )
 
+platform(
+    name = "windows_arm64",
+    constraint_values = [
+        "@platforms//os:windows",
+        "@platforms//cpu:arm64",
+    ],
+)
+
 REMOTE_PLATFORMS = ("rbe_ubuntu1804_java11",)
 
 [

third_party/blake3/blake3.BUILD

@@ -58,6 +58,9 @@ cc_library(
 	    "-DBLAKE3_NO_AVX512",
 	],
         "@bazel_tools//src/conditions:windows_x64": [],
+        "@bazel_tools//src/conditions:windows_arm64": [
+            "-DBLAKE3_USE_NEON=0",
+        ],
         "@bazel_tools//src/conditions:darwin_arm64": [
             "-DBLAKE3_USE_NEON=1",
         ],