add windows builds to bazel

.bazelrc

@@ -1 +1,6 @@
+common --enable_platform_specific_config
+build --verbose_failures
+
 build --cxxopt="-std=c++20"
+
+build:windows --cxxopt='/std:c++20' --host_cxxopt='/std:c++20' --compiler=clang-cl

.github/workflows/bazel.yml

@@ -22,14 +22,25 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  windows:
+    runs-on: windows-2025
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: bazel-contrib/setup-bazel@bbf8fe8b219f642c7f8bc673215f28eb1d9dec51 # v0.10.0
+        with:
+          bazelisk-cache: true
+          disk-cache: ${{ github.workflow }}-${{ runner.os }}
+          repository-cache: true
+      - name: Build & Test
+        run: bazel test //...
   macos:
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - uses: bazel-contrib/setup-bazel@bbf8fe8b219f642c7f8bc673215f28eb1d9dec51 # v0.10.0
         with:
           bazelisk-cache: true
-          disk-cache: ${{ github.workflow }}
+          disk-cache: ${{ github.workflow }}-${{ runner.os }}
           repository-cache: true
       - name: Build & Test
         run: bazel test //...
@@ -45,7 +56,7 @@ jobs:
       - uses: bazel-contrib/setup-bazel@bbf8fe8b219f642c7f8bc673215f28eb1d9dec51 # v0.10.0
         with:
           bazelisk-cache: true
-          disk-cache: ${{ github.workflow }}
+          disk-cache: ${{ github.workflow }}-${{ runner.os }}
           repository-cache: true
       - name: Build & Test
         run: bazel test //...

.gitignore

@@ -29,3 +29,4 @@ benchmarks/competitors/servo-url/target
 
 # bazel output
 bazel-*
+.clwb

BUILD.bazel

@@ -1,3 +1,15 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+# Platform definition for using clang-cl on Windows
+platform(
+    name = "x64_windows-clang-cl",
+    constraint_values = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:windows",
+        "@bazel_tools//tools/cpp:clang-cl",
+    ],
+)
+
 cc_library(
     name = "ada",
     srcs = [

MODULE.bazel

@@ -1 +1,3 @@
 bazel_dep(name = "googletest", version = "1.15.2")
+bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "rules_cc", version = "0.1.1")

tests/BUILD.bazel

@@ -7,3 +7,13 @@ cc_test(
         "@googletest//:gtest_main",
     ],
 )
+
+cc_test(
+    name = "ada_c",
+    srcs = ["ada_c.cpp"],
+    deps = [
+        "//:ada",
+        "@googletest//:gtest",
+        "@googletest//:gtest_main",
+    ],
+)