Add minimal Windows CI (#532)

For now, only building the extension is supported.

Author: cmb69

.github/workflows/build-windows.yml

@@ -0,0 +1,37 @@
+name: Build on Windows
+on: [push, pull_request]
+jobs:
+  windows:
+    defaults:
+      run:
+        shell: cmd
+    strategy:
+      matrix:
+          version: ['7.4', '8.0', '8.1']
+          arch: [x64, x86]
+          ts: [nts, zts]
+    runs-on: windows-latest
+    steps:
+      - name: Checkout memcached
+        uses: actions/checkout@v2
+      - name: Setup PHP
+        id: setup-php
+        uses: cmb69/[email protected]
+        with:
+          version: ${{matrix.version}}
+          arch: ${{matrix.arch}}
+          ts: ${{matrix.ts}}
+          deps: zlib
+      - name: Fetch libmemcached
+        run: curl -OLs https://windows.php.net/downloads/pecl/deps/libmemcached-1.1.1-${{steps.setup-php.outputs.vs}}-${{matrix.arch}}.zip && 7z x libmemcached-1.1.1-${{steps.setup-php.outputs.vs}}-${{matrix.arch}}.zip -o..\deps
+      - name: Enable Developer Command Prompt
+        uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: ${{matrix.arch}}
+          toolset: ${{steps.setup-php.outputs.toolset}}
+      - name: phpize
+        run: phpize
+      - name: configure
+        run: configure --enable-memcached --enable-memcached-session --enable-memcached-json --with-prefix=${{steps.setup-php.outputs.prefix}}
+      - name: make
+        run: nmake