CI: macos: try LD_LIBRARY_PATH; free-bsd: try building

.github/workflows/ci.yml

@@ -236,7 +236,7 @@ jobs:
     - name: Test
       working-directory: build
       shell: bash
-      run: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"$(pwd)/backend" PATH=$PATH:"$(pwd)/frontend" ctest -V -C $BUILD_TYPE
+      run: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"$(pwd)/backend:/usr/local/lib" PATH=$PATH:"$(pwd)/frontend" ctest -V -C $BUILD_TYPE
 
   build-macOS-sanitize:
     runs-on: macOS-latest
@@ -262,3 +262,24 @@ jobs:
       working-directory: build
       shell: bash
       run: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"$(pwd)/backend" PATH=$PATH:"$(pwd)/frontend" ctest -V -C $BUILD_TYPE
+
+  build-freebsd:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Build FreeBSD
+      id: build-freebsd
+      uses: vmactions/freebsd-vm@v1.2.1
+      with:
+        usesh: true
+        mem: 4096
+        prepare: pkg install -y git cmake gmake gcc graphics/png
+        run: |
+          set -e
+          git config --global --add safe.directory ${GITHUB_WORKSPACE}
+          cmake -E make_directory build
+          cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DZINT_TEST=ON -DZINT_SANITIZE=OFF -DZINT_USE_QT=OFF
+          cmake -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE
+          cmake --build build --config $BUILD_TYPE