Error when building Modem_Shell for Thingy91 -> ld.bfd: region `FLASH' overflowed by 64612 bytes

[xr47]

When I execute the command:  west build -p -b thingy91_nrf9160_ns -- -DDTC_OVERLAY_FILE=ppp.overlay -DOVERLAY_CONFIG=overlay-ppp.conf

I get: 

ld.bfd: region `FLASH' overflowed by 64612 bytes
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: /usr/local/bin/cmake --build /home/xavier/ncs/v2.2.99-dev3/nrf/samples/nrf9160/modem_shell/build

I only wish to use the modem shell for the PPP functionality, and do not care about including support that is not necessary to achieve PPP dial up service. Any suggestions on how to build this image with only PPP that will fit on the Thingy91 would be IMMENSELY appreciated!   

[Marshall]

I think from memory there is an option to redirect the PPP out another port.

# UARTs are switched

CONFIG_NET_PPP_UART_NAME="UART_0"

If you connect your PI to this "garbage" and set a PPP session, it should just magically work. 

Try the script with the noccp option. ([Regression ncs v1.8.0] nRF9160-DK , Modem_shell demo , HARD FAULT after connecting over ppp - Nordic Q&A - Nordic DevZone - Nordic DevZone (nordicsemi.com)_

 i.e. this is the command that worked for us. 

sudo pppd /dev/ttyUSB0 115200 nocrtscts debug nodetach noauth local noccp

[xr47]

Where would that CONFIG_NET_PPP... need to go? I tried adding it to the overlay-ppp.conf and then received a bunch of errors. I was able to set a PPP session with the command you provided but I'm not able to access the internet, so I've got some digging to do.

[Marshall]

I Had mine in overlay-ppp.conf - take a look at KConfig, there might be some dependencies. 

[xr47]

I didn't need to do anything apparently. The issue resolved itself after a few minutes. Thanks for all the help!!!!

[Marshall]

Awesome, I pleased to hear it works!