F´ Cross-Compilation Tutorial
Table of Contents
1. Introduction
In this section, we will learn how to cross-compile for different architectures. This tutorial will use the Raspberry Pi ARM x64 as an example. In order to fully benefit from this tutorial, the user should acquire a Raspberry Pi.
The user should also have an understanding of the Raspberry Pi and specifically how to SSH into the Pi and run applications.
Prerequisites
Install the dependencies required for compiling for ARM. See the steps in the Cross-Compilation Setup Tutorial for more information.
2. Compiling for ARM
Cross-compiling is as easy as building the deployment for a specific platform.
For users running on 64-bit arm the platform is called aarch64-linux, and for users
on 32-bit arm use arm-hf-linux. This package expects the environment variable
ARM_TOOLS_PATH to point to the installation directory of the ARM cross-compilers.
Users need to generate for each platform they wish to run on.
Here is how to build for the 64-bit Arm Linux platform:
export ARM_TOOLS_PATH=/opt/toolchains
#You can check to make sure the environment variable is set by running:
echo $ARM_TOOLS_PATH
#This should return the path /opt/toolchains
# For in-person workshops and ARM 64-bit hardware
# In: Deployment Folder
fprime-util generate aarch64-linux
fprime-util build aarch64-linux
# For ARM 32-bit hardware
# In: Deployment Folder
fprime-util generate arm-hf-linux
fprime-util build arm-hf-linux
Note: macOS users must run these commands from within the Docker container described in Appendix I.
Next: Running on ARM Linux