PATH not set on LinuxCNC RPi4 image after installing LitexCNC

[Peter-van-Tol]

Following the documentation for installing LitexCNC / LinuxCNC on a RaspberryPi4 using the image from linuxcnc.org/downloads does not work.

Problems:

• LitexCNC is not persisted on PATH
• therefore the toolchain is also not on PATH, thus building fails.

Proposed solution
Modify the documentation so the PATH variable is persisted. In later stage modify source code so the relevant files are correctly written.

Caveat
The user uba100 on forum.linuxcnc.org has tried to fix this problem. He changed the PATH variable

export PATH=$PATH:~/.local/bin/:~/toolchain/oss-cad-suite/libexec/

And got the following message:

INFO:SoC:
yosys: error while loading shared libraries: libffi.so.7: cannot open shared object file: No such file or directory

This shared file is located within oss-cad-suite, so he changed the LD_LIBRARY_PATH to include this folder:

export LD_LIBRARY_PATH=~/toolchain/oss-cad-suite/lib/:$LD_LIBRARY_PATH

Which now results in receiving the following messages:

/home/cnc/.local/bin/python3: /home/cnc/toolchain/oss-cad-suite/lib/libm.so.6: version `GLIBC_2.35' not found (required by /home/cnc/.local/bin/python3)
/home/cnc/.local/bin/python3: /home/cnc/toolchain/oss-cad-suite/lib/libc.so.6: version `GLIBC_2.33' not found (required by /home/cnc/.local/bin/python3)
/home/cnc/.local/bin/python3: /home/cnc/toolchain/oss-cad-suite/lib/libc.so.6: version `GLIBC_2.32' not found (required by /home/cnc/.local/bin/python3)
/home/cnc/.local/bin/python3: /home/cnc/toolchain/oss-cad-suite/lib/libc.so.6: version `GLIBC_2.34' not found (required by /home/cnc/.local/bin/python3)

This most likely indicates a broken installation. Changing LD_LIBRARY_PATH is most-likely not the correct way to get the installation up-and-running.

[Peter-van-Tol]

Problem is that PATH variable is not set correctly. The parameters are written to .profile, which is not read by the console when started from the GUI. I tested it headless over SSH, which means that .profile is read...

Temporary fix for the problem is to add the following lines to .bashrc

# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/.local/bin" ] ; then
    PATH="$HOME/.local/bin:$PATH"
fi
# set PATH so it includes oss-cad-suite
if [ -d "/home/cnc/toolchain/oss-cad-suite/bin" ] ; then
        PATH="/home/cnc/toolchain/oss-cad-suite/bin:$PATH"
fi

[Peter-van-Tol]

Solved in version 1.2.1