Cross Compiling on iMX.8X - SCALES

[kdizzlle]

@kevin-f-ortega @timcanham @Lex-ari

Problem Description

Trying to set up fprime on an 64-bit Linux host machine to cross compile c and c++ onto the phyCORE iMX.8X development board. Here is a link to our GitHub repo with our fprime environment: https://github.com/kdizzlle/fprime-hub-pattern-example

The iMX is using a poky Linux distribution with an SDK installed on the Linux host computer. The most relevant files for the SDK are in our repo as well.

We made our own cmake platform and toolchain, both called imx8x.cmake (in the repo). We tried to follow the pathing based on the I2C Interfacing directions on our docs: https://scales-hardware.readthedocs.io/en/latest/imx8x_procedures/#directions_3

Other relevant docs include the following:
phyCORE Install the SDK: https://docs.phytec.com/projects/yocto-phycore-imx8x/en/latest/applicationdevelopment/InstallTheSDK.html
phyCORE Hello World: https://docs.phytec.com/projects/yocto-phycore-imx8x/en/latest/applicationdevelopment/HelloWorld.html

We tried many different variations of the pathing for the platform and toolchain files, also inspired by the environment setup files from the SDK in the following repo: https://github.com/BroncoSpace-Lab/scales-hardware/tree/main/imx8x

Also in this repo is more screenshots that may be relevant. We really had to brute force it and disable cmake errors to get it to build even a little bit.

Context / Environment

Execute fprime-util version-check and share the output.

Operating System: Linux
CPU Architecture: x86_64
Platform: Linux-6.8.0-47-generic-x86_64-with-glibc2.35
Python version: 3.10.12
CMake version: 3.22.1
Pip version: 22.0.2
Pip packages:
    fprime-tools==3.4.4
    fprime-gds==3.4.3
    fprime-fpp-*==2.1.0a11

Expected Behavior

Final build errors:

[timcanham]

@kdizzlle I don't think we have permissions for your repo:
https://github.com/nasa/fprime/discussions/url

It looks like there are some platform-dependent implmentations in SystemResources that we need to fill in. In the short term, you could probably remove the SystemResources component from your build to make progress.

[kdizzlle]

Fixed the links in the post! Should work now.

[kevin-f-ortega]

Hi @kdizzlle, could you grant us read access to your repo?

[kdizzlle]

Fixed the links in the post! Should work now.

[kevin-f-ortega]

Hi Kelly. Thanks for fixing the links!

Based on the warning, looks like you need to add -O to your compile options. Could you add that and try again?

Also, I noticed you added your platform and toolchain file inside of F Prime. I recommend moving them to your project's repo. So under https://github.com/kdizzlle/fprime-hub-pattern-example, create two directories called cmake/platform and cmake/toolchain and move the files into their respective folder. But we can tackle that later.

[kevin-f-ortega]

You'll add that compile option in your toolchain file

[kevin-f-ortega]

Also, as Tim mentioned, you could comment out SystemResources here:

1. https://github.com/kdizzlle/fprime-hub-pattern-example/blob/main/obcA/Top/instances.fpp#L135
2. https://github.com/kdizzlle/fprime-hub-pattern-example/blob/main/obcA/Top/topology.fpp#L43
3. https://github.com/kdizzlle/fprime-hub-pattern-example/blob/main/obcA/Top/topology.fpp#L112
4. https://github.com/kdizzlle/fprime-hub-pattern-example/blob/main/obcA/Top/obcAPackets.xml#L49-L79
5. and the same files for obcB

Once you comment out those lines, you can try to compile again.

[kevin-f-ortega]

Alternatively, could you try adding these lines into your platform file and compiling

choose_fprime_implementation(Os/Cpu Os/Cpu/Linux)
choose_fprime_implementation(Os/Memory Os/Memory/Linux)