64 Bit Cross Compiler: Installation Instructions

64-Bit Cross-Compiler ARM64 Toolchains Setup Guide

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⚠️ Important Note:

• These 64-Bit Compiler Toolchain Binaries will only compile programs for Raspberry Pi Models/Versions with ARMV8-A CPU Architecture that supports 64-Bit execution state(You can find all supported Raspberry Pi Models here) and with Raspberry Pi 64-Bit OS flavors(such as Pi64 by @bamarni) installed.
• Note::bulb: These instructions are exclusively for GCC Cross Compiler version 9.2.0 but will work with any compiler version available with this project.

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A. Prerequisites:

• Update your environment:

  sudo apt update && sudo apt dist-upgrade

• Install Important Packages:

  sudo apt-get install build-essential gawk gcc g++ gfortran git texinfo bison libncurses-dev

 

B. Download Binary:

You can easily visit downloading page and find suitable cross-binaries for your Machine. Click Link given below:

 

C. Extracting and Linking Binary:

👉 Temporary Installation: Use these binaries directly (Recommended)

This repository now provides Free-Standing Cross-Compiler Toolchains that gives a common setup for everyone, the same standardized headers with no hardcoded paths, therefore the same solutions for everyone.

• Extraction: Extract using tar terminal command as follows:

  tar xf <filename e.g cross-gcc-9.1.0-pi_64.tar.gz>

• Linking:

  PATH=/<extracted folder-name e.g cross-pi-gcc-9.1.0-64>/bin:$PATH
  LD_LIBRARY_PATH=/<extracted folder-name e.g cross-pi-gcc-9.1.0-64>/lib:$LD_LIBRARY_PATH

 

👉 Permanent Installation:

• Extraction: Extract using tar terminal command as follows:

  tar xf <filename e.g cross-gcc-9.1.0-pi_64.tar.gz>

• Configuring: Move extracted folder to any location (for e.g. /opt) by using following command:

  sudo mv <extracted folder-name e.g cross-pi-gcc-9.1.0-64> /opt

• Linking: Properly link Path/Environment Variables permanently with either of the following given methods:

  • Appending variables to your .profile: (Recommended)

     echo 'export PATH=/opt/<extracted folder-name e.g cross-pi-gcc-9.1.0-64>/bin:$PATH' >> .profile  
     echo 'export LD_LIBRARY_PATH=/opt/<extracted folder-name e.g cross-pi-gcc-9.1.0-64>/lib:$LD_LIBRARY_PATH' >> .profile
     source .profile

  • Appending variables to your .bashrc: ⚠️ Some Linux users reported some trouble with configuring path variables at .profile that doesn't seem to work for them. If you encounter a similar problem, try setting/configure by adding paths to your .bashrc file instead of as follows:

     echo 'export PATH=/opt/<extracted folder-name e.g cross-pi-gcc-9.1.0-64>/bin:$PATH' >> .bashrc
     echo 'export LD_LIBRARY_PATH=/opt/<extracted folder-name e.g cross-pi-gcc-9.1.0-64>/lib:$LD_LIBRARY_PATH' >> .bashrc
     source .bashrc

 

D. Bonus:

• Extra step to use Cross-Compiler Binaries with CMAKE: Enable CMAKES's implicit directory feature by injecting the following lines into toolchain file: (Refer Issue:#3)

  unset(CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES)
  unset(CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES)