Linux / m8c fails to start at "INFO: Reset display" / invalid ioctl

[laamaa]

Some users have reported problems with starting m8c:

pi@retropie:~/code/m8c $ ./m8c
INFO: Looking for USB serial devices.
INFO: Found M8 in /dev/ttyACM1.
INFO: Opening port.
INFO: Enabling and resetting M8 display
INFO: Reset display

and after that, the program returns into terminal.

Sometimes the error might look something like:

INFO: Reading config /home/jonne/.local/share/m8c/config.ini
INFO: Writing config file to /home/jonne/.local/share/m8c/config.ini
INFO: Looking for USB serial devices.
INFO: Found M8 in /dev/ttyACM1.
INFO: Opening port.
ERROR: Error: Failed: Inappropriate ioctl for device

This seems to be a conflict with some Linux kernel versions and libserialport (sigrokproject/libserialport@6f9b03e) and the error can be mitigated by building libserialport from sources:

1. Remove existing libserialport packages
   for example, on Debian based systems apt-get remove libserialport0 libserialport-dev
2. Build libserialport from source code according to instructions in https://github.com/sigrokproject/libserialport
3. Rebuild m8c

[laamaa]

If the following appears after building libserialport manually

jonne@jonne-ThinkPad-T440p:~/Code/m8c$ ./m8c 
./m8c: error while loading shared libraries: libserialport.so.0: cannot open shared object file: No such file or directory

You probably need to link the libraries to the correct place

sudo ln -s /usr/local/lib/libserialport.so.0.1.0 /usr/lib/libserialport.so.0.1.0
sudo ln -s /usr/local/lib/libserialport.so.0 /usr/lib/libserialport.so.0