unify path flattening for all OS

Author: th-skam

.github/workflows/ci.yml

@@ -52,11 +52,18 @@ jobs:
               ..
             ninja install
           fi
-          # Flatten the CollisionAlgorithm install structure
-          mkdir -p $GITHUB_WORKSPACE/install/CollisionAlgorithm/include/CollisionAlgorithm
-          mv $GITHUB_WORKSPACE/install/CollisionAlgorithm/include/include/CollisionAlgorithm/CollisionAlgorithm/src/* \
-             $GITHUB_WORKSPACE/install/CollisionAlgorithm/include/CollisionAlgorithm/
-          rm -rf $GITHUB_WORKSPACE/install/CollisionAlgorithm/include/include
+          # Move the CollisionAlgorithm installation to match ConstraintGeometry CMake
+          SRC_PATH="$GITHUB_WORKSPACE/install/CollisionAlgorithm/include/include/CollisionAlgorithm/CollisionAlgorithm/src"
+          DEST_PATH="$GITHUB_WORKSPACE/install/CollisionAlgorithm/include/CollisionAlgorithm"
+          # If Windows, convert paths 
+          if [[ "$RUNNER_OS" == "Windows" ]]; then
+            SRC_PATH=$(cygpath -u "$SRC_PATH")
+            DEST_PATH=$(cygpath -u "$DEST_PATH")
+          fi
+          # Flatten install structure
+          mkdir -p "$DEST_PATH"
+          mv "$SRC_PATH"/* "$DEST_PATH"/
+          rm -rf "$GITHUB_WORKSPACE/install/CollisionAlgorithm/include/include"
           
       - name: Checkout source code
         uses: actions/checkout@v2