ci: rename build-macos.yml to macos.yml

This is consistent with the other files, and IMHO is better since we
don't just build for MacOS (but also run a bunch of tests).

.github/workflows/macos.yml

@@ -0,0 +1,157 @@
+name: macOS
+
+on:
+  pull_request:
+  push:
+    branches:
+      - dev
+      - release
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-macos:
+    name: build-macos
+    strategy:
+      matrix:
+        # macos-13: amd64 (oldest supported version as of 18-10-2024)
+        # macos-14: arm64 (oldest arm64 version)
+        os: [macos-13, macos-14]
+        include:
+          - os: macos-13
+            goarch: amd64
+          - os: macos-14
+            goarch: arm64
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Install Dependencies
+        run: |
+          HOMEBREW_NO_AUTO_UPDATE=1 brew install qemu binaryen
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+      - name: Extract TinyGo version
+        id: version
+        run: ./.github/workflows/tinygo-extract-version.sh | tee -a "$GITHUB_OUTPUT"
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.24'
+          cache: true
+      - name: Restore LLVM source cache
+        uses: actions/cache/restore@v4
+        id: cache-llvm-source
+        with:
+          key: llvm-source-19-${{ matrix.os }}-v1
+          path: |
+            llvm-project/clang/lib/Headers
+            llvm-project/clang/include
+            llvm-project/compiler-rt
+            llvm-project/lld/include
+            llvm-project/llvm/include
+      - name: Download LLVM source
+        if: steps.cache-llvm-source.outputs.cache-hit != 'true'
+        run: make llvm-source
+      - name: Save LLVM source cache
+        uses: actions/cache/save@v4
+        if: steps.cache-llvm-source.outputs.cache-hit != 'true'
+        with:
+          key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
+          path: |
+            llvm-project/clang/lib/Headers
+            llvm-project/clang/include
+            llvm-project/compiler-rt
+            llvm-project/lld/include
+            llvm-project/llvm/include
+      - name: Restore LLVM build cache
+        uses: actions/cache/restore@v4
+        id: cache-llvm-build
+        with:
+          key: llvm-build-19-${{ matrix.os }}-v1
+          path: llvm-build
+      - name: Build LLVM
+        if: steps.cache-llvm-build.outputs.cache-hit != 'true'
+        run: |
+          # fetch LLVM source
+          rm -rf llvm-project
+          make llvm-source
+          # install dependencies
+          HOMEBREW_NO_AUTO_UPDATE=1 brew install cmake ninja
+          # build!
+          make llvm-build
+          find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
+      - name: Save LLVM build cache
+        uses: actions/cache/save@v4
+        if: steps.cache-llvm-build.outputs.cache-hit != 'true'
+        with:
+          key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
+          path: llvm-build
+      - name: Cache wasi-libc sysroot
+        uses: actions/cache@v4
+        id: cache-wasi-libc
+        with:
+          key: wasi-libc-sysroot-${{ matrix.os }}-v1
+          path: lib/wasi-libc/sysroot
+      - name: Build wasi-libc
+        if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
+        run: make wasi-libc
+      - name: make gen-device
+        run: make -j3 gen-device
+      - name: Test TinyGo
+        run: make test GOTESTFLAGS="-short"
+      - name: Build TinyGo release tarball
+        run: make release -j3
+      - name: Test stdlib packages
+        run: make tinygo-test
+      - name: Make release artifact
+        run: cp -p build/release.tar.gz build/tinygo${{ steps.version.outputs.version }}.darwin-${{ matrix.goarch }}.tar.gz
+      - name: Publish release artifact
+        # Note: this release artifact is double-zipped, see:
+        # https://github.com/actions/upload-artifact/issues/39
+        # We can essentially pick one of these:
+        # - have a double-zipped artifact when downloaded from the UI
+        # - have a very slow artifact upload
+        # We're doing the former here, to keep artifact uploads fast.
+        uses: actions/upload-artifact@v4
+        with:
+          name: darwin-${{ matrix.goarch }}-double-zipped-${{ steps.version.outputs.version }}
+          path: build/tinygo${{ steps.version.outputs.version }}.darwin-${{ matrix.goarch }}.tar.gz
+      - name: Smoke tests
+        run: make smoketest TINYGO=$(PWD)/build/tinygo
+  test-macos-homebrew:
+    name: homebrew-install
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        version: [16, 17, 18, 19]
+    steps:
+      - name: Set up Homebrew
+        uses: Homebrew/actions/setup-homebrew@master
+      - name: Fix Python symlinks
+        run: |
+          # Github runners have broken symlinks, so relink
+          # see: https://github.com/actions/setup-python/issues/577
+          brew list -1 | grep python | while read formula; do brew unlink $formula; brew link --overwrite $formula; done
+      - name: Install LLVM
+        run: |
+          brew install llvm@${{ matrix.version }}
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.24'
+          cache: true
+      - name: Build TinyGo (LLVM ${{ matrix.version }})
+        run: go install -tags=llvm${{ matrix.version }}
+      - name: Check binary
+        run: tinygo version
+      - name: Build TinyGo (default LLVM)
+        if: matrix.version == 19
+        run: go install
+      - name: Check binary
+        if: matrix.version == 19
+        run: tinygo version