nRF52840DK build error: src/jslex.o make: *** [espruino_2v08.220_nrf52840.elf] Error 1

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fanoush
try to have the source files inside wsl, I see paths like /mnt/c/Users/robin/Espruino this is asking for trouble due to differencies in filename case sensitivity and windows file timestamps, see also https://docs.microsoft.com/en-us/windows/wsl/filesystems (and someone having similar issues here )

since you also installed random stuff on windows side of things I'd try also to disable windows-wsl interoperability so you know only linux native stuff is run for 'make', 'arm-none-eabi-gcc' etc, not mixed windows/linux. This is configured in /etc/wsl.conf
```
$ cat /etc/wsl.conf
# after change run in powershell Restart-Service LxssManager
[interop]
enabled=false
appendWindowsPath=false
```
you can see if you have windows path prepended by running echo $PATH you should see only linux paths there. The easiest temporary fix for this is also to just change your path variable - before running make try something like export PATH=/home/robin/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin and exlude paths pointing to windows - /mnt/c/whatever

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Robin in reply to @fanoush

Fri 2021.10.01

Install comment: I thought I was installing the files within WSL using the git link to clone the respository from within the terminal window. I'll go back over those steps again, to validate.

A lot to digest there, but I believe you have hit the nail on the head with your quick eye and analysis regarding the case sensitivity.

Thank you @fanoush as with that quick response, will give me a good head start on checking that all out this weekend starting early Saturday morning. I'll have my work cut out for me!!

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