Add CI

Author: bamless

.github/workflows/build.yml

@@ -0,0 +1,34 @@
+name: Build
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+          - os: macos-latest
+          - os: windows-latest
+            compiler: clang
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup Clang (Windows)
+      if: matrix.os == 'windows-latest'
+      run: |
+        choco install llvm -y
+        echo "CC=clang" >> $env:GITHUB_ENV
+    - name: Test (Unix)
+      if: matrix.os != 'windows-latest'
+      run: make test
+    - name: Test (Windows)
+      if: matrix.os == 'windows-latest'
+      run: |
+        clang -Wall -Wextra -Wno-override-init -std=c99 -ggdb -Wno-attributes -Wno-pragmas -I./test/ -D_CRT_SECURE_NO_WARNINGS ./test/test.c -o test/test.exe
+        ./test/test.exe