fix: fix the wrong gnu toolchain lib path

setup.py

@@ -228,12 +228,14 @@ def install_software_toolchain():
     try:
         # Change to temporary directory
         os.chdir(temp_dir)
-        
         # Clone Verilator repository
         print("Download RISCV GNU Toolchain ...")
         run_command("wget https://github.com/riscv-collab/riscv-gnu-toolchain/releases/download/2025.05.01/riscv32-elf-ubuntu-22.04-gcc-nightly-2025.05.01-nightly.tar.xz")
         run_command("tar -xvf riscv32-elf-ubuntu-22.04-gcc-nightly-2025.05.01-nightly.tar.xz")
-        run_command("sudo cp -rf riscv/bin/* /usr/local/bin")
+        run_command(f"echo 'export PATH=${temp_dir}/bin:$PATH' >> ~/.bashrc")
+        run_command("source ~/.bashrc")
+        # echo 'export LD_LIBRARY_PATH=/opt/riscv32/lib:$LD_LIBRARY_PATH' >> ~/.bashrc
+
 
         print("✓ software toolchain installation completed")
         return True