diff --git a/README.md b/README.md
index f55e315..18c2ace 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,11 @@ Data processing is streamlined for instant conversions that are fully **renderin
     **Before running the following command there are somethings to note:**
     - By adding `--new-env`, a new conda environment named `trellis2` will be created. If you want to use an existing conda environment, please remove this flag.
     - By default the `trellis2` environment will use pytorch 2.6.0 with CUDA 12.4. If you want to use a different version of CUDA, you can remove the `--new-env` flag and manually install the required dependencies. Refer to [PyTorch](https://pytorch.org/get-started/previous-versions/) for the installation command.
-    - If you have multiple CUDA Toolkit versions installed, `CUDA_HOME` should be set to the correct version before running the command. For example, if you have CUDA Toolkit 12.4 and 13.0 installed, you can run `export CUDA_HOME=/usr/local/cuda-12.4` before running the command.
+    - If you have multiple CUDA Toolkit versions installed, `CUDA_HOME` should be set to the correct version before running the command. For example, if you have CUDA Toolkit 12.4 and 13.0 installed, you can run `export CUDA_HOME=/usr/local/cuda-12.4` before running the command. The script will attempt to auto-detect CUDA if `CUDA_HOME` is not set.
+    - **IMPORTANT:** The script automatically configures CUDA library paths to fix common linker issues with `libcuda.so`. If you encounter linker errors, ensure that:
+      - `libcuda.so` exists in `/usr/lib/x86_64-linux-gnu/` or your system's library path
+      - Your CUDA toolkit is properly installed with development libraries
+    - The script automatically converts git submodule URLs from SSH to HTTPS to avoid authentication issues during installation.
     - By default, the code uses the `flash-attn` backend for attention. For GPUs do not support `flash-attn` (e.g., NVIDIA V100), you can install `xformers` manually and set the `ATTN_BACKEND` environment variable to `xformers` before running the code. See the [Minimal Example](#minimal-example) for more details.
     - The installation may take a while due to the large number of dependencies. Please be patient. If you encounter any issues, you can try to install the dependencies one by one, specifying one flag at a time.
     - If you encounter any issues during the installation, feel free to open an issue or contact us.
diff --git a/setup.sh b/setup.sh
index e09e2b1..adee1f9 100644
--- a/setup.sh
+++ b/setup.sh
@@ -66,6 +66,26 @@ else
     exit 1
 fi
 
+# Set CUDA_HOME if not already set (for CUDA platform)
+if [ "$PLATFORM" = "cuda" ] ; then
+    if [ -z "$CUDA_HOME" ]; then
+        # Try to find CUDA installation
+        if [ -d "/usr/local/cuda-12.4" ]; then
+            export CUDA_HOME=/usr/local/cuda-12.4
+            echo "[INFO] CUDA_HOME not set, using: $CUDA_HOME"
+        elif [ -d "/usr/local/cuda" ]; then
+            export CUDA_HOME=/usr/local/cuda
+            echo "[INFO] CUDA_HOME not set, using: $CUDA_HOME"
+        else
+            echo "[WARNING] CUDA_HOME not set and could not auto-detect CUDA installation."
+            echo "[WARNING] If compilation fails, please set CUDA_HOME manually before running this script."
+            echo "[WARNING] Example: export CUDA_HOME=/usr/local/cuda-12.4"
+        fi
+    else
+        echo "[INFO] Using CUDA_HOME: $CUDA_HOME"
+    fi
+fi
+
 if [ "$NEW_ENV" = true ] ; then
     conda create -n trellis2 python=3.10
     conda activate trellis2
@@ -86,7 +106,7 @@ fi
 
 if [ "$FLASHATTN" = true ] ; then
     if [ "$PLATFORM" = "cuda" ] ; then
-        pip install flash-attn==2.7.3
+        pip install flash-attn==2.7.3 --no-build-isolation
     elif [ "$PLATFORM" = "hip" ] ; then
         echo "[FLASHATTN] Prebuilt binaries not found. Building from source..."
         mkdir -p /tmp/extensions
@@ -112,7 +132,11 @@ fi
 
 if [ "$NVDIFFREC" = true ] ; then
     if [ "$PLATFORM" = "cuda" ] ; then
+        echo "[NVDIFFREC] Setting CUDA library paths..."
+        export LIBRARY_PATH=/usr/lib/x86_64-linux-gnu:${CUDA_HOME}/lib64/stubs:${LIBRARY_PATH}
+        export LDFLAGS="-L/usr/lib/x86_64-linux-gnu -L${CUDA_HOME}/lib64/stubs"
         mkdir -p /tmp/extensions
+        rm -rf /tmp/extensions/nvdiffrec
         git clone -b renderutils https://github.com/JeffreyXiang/nvdiffrec.git /tmp/extensions/nvdiffrec
         pip install /tmp/extensions/nvdiffrec --no-build-isolation
     else
@@ -121,8 +145,20 @@ if [ "$NVDIFFREC" = true ] ; then
 fi
 
 if [ "$CUMESH" = true ] ; then
+    echo "[CUMESH] Setting CUDA library paths..."
+    export LIBRARY_PATH=/usr/lib/x86_64-linux-gnu:${CUDA_HOME}/lib64/stubs:${LIBRARY_PATH}
+    export LDFLAGS="-L/usr/lib/x86_64-linux-gnu -L${CUDA_HOME}/lib64/stubs"
     mkdir -p /tmp/extensions
-    git clone https://github.com/JeffreyXiang/CuMesh.git /tmp/extensions/CuMesh --recursive
+    rm -rf /tmp/extensions/CuMesh
+    echo "[CUMESH] Cloning repository..."
+    git clone https://github.com/JeffreyXiang/CuMesh.git /tmp/extensions/CuMesh
+    cd /tmp/extensions/CuMesh
+    echo "[CUMESH] Fixing submodule URLs to use HTTPS..."
+    git config --file=.gitmodules submodule.third_party/cubvh.url https://github.com/JeffreyXiang/cubvh.git
+    git submodule sync
+    echo "[CUMESH] Initializing submodules..."
+    git submodule update --init --recursive
+    cd $WORKDIR
     pip install /tmp/extensions/CuMesh --no-build-isolation
 fi
 
@@ -133,7 +169,16 @@ if [ "$FLEXGEMM" = true ] ; then
 fi
 
 if [ "$OVOXEL" = true ] ; then
+    echo "[O-VOXEL] Setting CUDA library paths..."
+    export LIBRARY_PATH=/usr/lib/x86_64-linux-gnu:${CUDA_HOME}/lib64/stubs:${LIBRARY_PATH}
+    export LDFLAGS="-L/usr/lib/x86_64-linux-gnu -L${CUDA_HOME}/lib64/stubs"
     mkdir -p /tmp/extensions
+    rm -rf /tmp/extensions/o-voxel
     cp -r o-voxel /tmp/extensions/o-voxel
+    echo "[O-VOXEL] Fixing dependencies to avoid git reinstall..."
+    cd /tmp/extensions/o-voxel
+    sed -i 's|cumesh @ git+https://github.com/JeffreyXiang/CuMesh.git|"cumesh"|' pyproject.toml
+    sed -i 's|flex_gemm @ git+https://github.com/JeffreyXiang/FlexGEMM.git|"flex_gemm"|' pyproject.toml
+    cd $WORKDIR
     pip install /tmp/extensions/o-voxel --no-build-isolation
 fi