Better MSVC support

Author: FrancescAlted

.github/workflows/ci.yml

@@ -11,15 +11,65 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
+        compiler: [gcc]
+        include:
+          - os: windows-latest
+            compiler: msvc
+          - os: windows-latest
+            compiler: clang-cl
     runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v4
 
-    - name: Build library
+    - name: Set up MSVC
+      if: matrix.compiler == 'msvc' || matrix.compiler == 'clang-cl'
+      uses: ilammy/msvc-dev-cmd@v1
+    
+    - name: Build library (GCC)
+      if: matrix.compiler == 'gcc'
       shell: bash
       run: make lib
 
-    - name: Build and run tests
+    - name: Build and run tests (GCC)
+      if: matrix.compiler == 'gcc'
       shell: bash
       run: make test
+
+    - name: Build library (MSVC)
+      if: matrix.compiler == 'msvc'
+      shell: cmd
+      run: |
+        if not exist build mkdir build
+        cl /O2 /DNDEBUG /Isrc src/miniexpr.c /c /Fobuild/miniexpr.obj
+
+    - name: Build and run tests (MSVC)
+      if: matrix.compiler == 'msvc'
+      shell: cmd
+      run: |
+        setlocal enabledelayedexpansion
+        for %%f in (tests\*.c) do (
+          cl /O2 /DNDEBUG /Isrc %%f build/miniexpr.obj /Febuild/%%~nf.exe
+          if !errorlevel! neq 0 exit /b !errorlevel!
+          build\%%~nf.exe
+          if !errorlevel! neq 0 exit /b !errorlevel!
+        )
+
+    - name: Build library (clang-cl)
+      if: matrix.compiler == 'clang-cl'
+      shell: cmd
+      run: |
+        if not exist build mkdir build
+        clang-cl /O2 /DNDEBUG /Isrc src/miniexpr.c /c /Fobuild/miniexpr.obj
+
+    - name: Build and run tests (clang-cl)
+      if: matrix.compiler == 'clang-cl'
+      shell: cmd
+      run: |
+        setlocal enabledelayedexpansion
+        for %%f in (tests\*.c) do (
+          clang-cl /O2 /DNDEBUG /Isrc %%f build/miniexpr.obj /Febuild/%%~nf.exe
+          if !errorlevel! neq 0 exit /b !errorlevel!
+          build\%%~nf.exe
+          if !errorlevel! neq 0 exit /b !errorlevel!
+        )