add windows and mac github runners

.github/actions/install-build-dependencies/action.yml

@@ -0,0 +1,20 @@
+name: install-build-dependencies
+description: Install OS-specific system packages needed to build llama-cpp-bindings (CMake, libclang, GNU make).
+
+runs:
+  using: composite
+  steps:
+    - name: install linux build dependencies
+      if: runner.os == 'Linux'
+      shell: bash
+      run: sudo apt-get update && sudo apt-get install -y cmake libclang-dev
+
+    - name: install windows build dependencies
+      if: runner.os == 'Windows'
+      shell: bash
+      run: choco install -y make
+
+    - name: set windows libclang path
+      if: runner.os == 'Windows'
+      shell: bash
+      run: echo "LIBCLANG_PATH=C:\\Program Files\\LLVM\\bin" >> $GITHUB_ENV

.github/actions/install-rust-toolchain/action.yml

@@ -0,0 +1,11 @@
+name: install-rust-toolchain
+description: Install the pinned stable Rust toolchain (with rustfmt and clippy) and configure the cargo build cache.
+
+runs:
+  using: composite
+  steps:
+    - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
+      with:
+        components: rustfmt, clippy
+
+    - uses: Swatinem/rust-cache@v2

.github/workflows/unit-tests.yml

@@ -9,33 +9,40 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  fmt:
+  formatting:
     name: formatting
     runs-on: ubuntu-latest
+    timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
 
-      - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
-
-      - uses: Swatinem/rust-cache@v2
+      - uses: ./.github/actions/install-rust-toolchain
 
       - run: make fmt.check
 
   test:
-    name: tests
-    runs-on: ubuntu-latest
+    name: tests (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    defaults:
+      run:
+        shell: bash
+    env:
+      LLAMA_DISABLE_CCACHE: '1'
+      RUST_BACKTRACE: '1'
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
 
-      - name: install system dependencies
-        run: sudo apt-get update && sudo apt-get install -y cmake libclang-dev
-
-      - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
+      - uses: ./.github/actions/install-build-dependencies
 
-      - uses: Swatinem/rust-cache@v2
+      - uses: ./.github/actions/install-rust-toolchain
 
       - run: make test.unit

Makefile

@@ -5,8 +5,8 @@ DEVICE_FEATURE = $(if $(TEST_DEVICE),--features $(TEST_DEVICE),)
 LLM_BASE_FEATURE_FLAGS = $(DEVICE_FEATURE)
 LLM_QWEN_CAPABLE_FEATURE_FLAGS = $(DEVICE_FEATURE) --features $(QWEN_CAPABLE_FEATURES)
 
-CARGO_TEST_LLM_FLAGS = --no-fail-fast -p llama-cpp-bindings-tests $(LLM_BASE_FEATURE_FLAGS) -- --test-threads=1
-CARGO_TEST_LLM_FLAGS_QWEN_CAPABLE = --no-fail-fast -p llama-cpp-bindings-tests $(LLM_QWEN_CAPABLE_FEATURE_FLAGS) -- --test-threads=1
+CARGO_TEST_LLM_FLAGS = --release --no-fail-fast -p llama-cpp-bindings-tests $(LLM_BASE_FEATURE_FLAGS) -- --test-threads=1
+CARGO_TEST_LLM_FLAGS_QWEN_CAPABLE = --release --no-fail-fast -p llama-cpp-bindings-tests $(LLM_QWEN_CAPABLE_FEATURE_FLAGS) -- --test-threads=1
 
 QWEN3_5_0_8B_ENV = \
 	LLAMA_TEST_HF_REPO=unsloth/Qwen3.5-0.8B-GGUF \

llama-cpp-bindings-build/src/cmake_config.rs

@@ -205,6 +205,7 @@ fn configure_platform_specific(
         TargetOs::Windows(WindowsVariant::Msvc) => {
             config.cflag("/w");
             config.cxxflag("/w");
+            config.cxxflag("/EHsc");
             configure_msvc_release_workaround(config, profile);
         }
         TargetOs::Android => {

llama-cpp-bindings-build/src/cpp_wrapper.rs

@@ -33,6 +33,7 @@ pub fn compile_cpp_wrappers(llama_src: &Path, target_os: &TargetOs) {
 
     if target_os.is_msvc() {
         build.flag("/std:c++17");
+        build.flag("/EHsc");
     }
 
     if target_os.is_android() && cfg!(feature = "static-stdcxx") {

llama-cpp-bindings-build/src/cpp_wrapper_mtmd.rs

@@ -23,6 +23,7 @@ pub fn compile_mtmd(llama_src: &Path, target_os: &TargetOs) {
 
     if target_os.is_msvc() {
         build.flag("/std:c++17");
+        build.flag("/EHsc");
     }
 
     if target_os.is_android() && cfg!(feature = "static-stdcxx") {