Compilation and Building

Mini and Small Systems

Invalid -- w Option

  • Symptom

    The build fails, and "usr/sbin/ninja: invalid option -- w" is displayed.

  • Cause

    The Ninja version in the build environment is outdated and does not support the --w option.

  • Solution

    Uninstall Ninja and GN and follow the instructions provided in IDE to install Ninja and GN of the required version.

Library ncurses Not Found

  • Symptom

    The build fails, and "/usr/bin/ld: cannot find -lncurses" is displayed.

  • Cause

    The ncurses library is not installed.

  • Solution

    sudo apt-get install lib32ncurses5-dev

mcopy not Found

  • Symptom

    The build fails, and "line 77: mcopy: command not found" is displayed.

  • Cause

    mcopy is not installed.

  • Solution

    ​sudo apt-get install dosfstools mtools

No riscv File or Directory

  • Symptom

    The build fails, and the following information is displayed:

    riscv32-unknown-elf-gcc: error trying to exec 'cc1': execvp: No such file or directory.

  • Cause

    Permission is required to access files in the riscv compiler directory.

  • Solution

    Run the following command to query the directory where gcc_riscv32 is located:

    which riscv32-unknown-elf-gcc

    Run the chmod command to change the directory permission to 755.

No Crypto

  • Symptom

    The build fails, and "No module named 'Crypto'" is displayed.

  • Cause

    Crypto is not installed in Python 3.

  • Solution

    1. Run the following command to query the Python version:

      python3 --version

    2. Ensure that Python 3.7 or later is installed, and then run the following command to install pycryptodome:

      sudo pip3 install pycryptodome

Unexpected Operator

  • Symptom

    The build fails, and "xx.sh [: xx unexpected operator" is displayed.

  • Cause

    The build environment is shell, not bash.

  • Solution

    sudo rm -rf /bin/sh
sudo ln -s /bin/bash /bin/sh

What should I do when the message Could not find a version that satisfies the requirement six>=1.9.0 is displayed during compilation and building?

  • Symptom

    The following error occurs during compilation and building:

    Could not find a version that satisfies the requirement six>=1.9.0

  • Possible Causes

    six is not installed.

  • Solutions

    Solution 1: Run the pip3 install six command to install six online.

    Solution 2: Install six offline.

    • Save the source code to the Linux server and run the pip3 install six-1.14.0-py2.py3-none-any.whl command to install six.
    • Rebuild an environment.

What should I do when the message cannot find -lgcc is displayed during compilation and building?

  • Symptom

    The following error occurs during compilation and building:

    riscv32-unknown-elf-ld: cannot find -lgcc

  • Possible Causes

    The PATH is incorrectly written by gcc_riscv32. There is an extra slash (/).

    ~/gcc_riscv32/bin/:/data/toolchain/

  • Solutions

    Modify the PATH by deleting the slash (/).

    ~/gcc_riscv32/bin:/data/toolchain/

What should I do when the message indicating Python cannot be found is displayed during compilation and building?

  • Symptom

    The following error occurs during compilation and building:

    -bash: /usr/bin/python: No such file or directory

  • Possible Cause 1: Python is not installed.

  • Solutions

    Run the following command to install Python 3:

    sudo apt-get install python3.8

  • Possible Cause 2: The soft link that points to the Python does not exist in the usr/bin directory.

  • Solutions

    Run the following commands to add a soft link:

    # cd /usr/bin/
# which python3
# ln -s /usr/local/bin/python3 python
# python --version

    Example:

What should I do when the message indicating Python 3 cannot be found is displayed during compilation and building?

  • Symptom

  • Possible Causes

    Python 3 is not installed.

  • Solutions

    Run the following command to install Python 3:

    sudo apt-get install python3.8