When I tried to run ./doomrl, the "Valkyrie SDL Application" window opened but is blank and the console said:
Abnormal program termination!
Reason : Access violation
If this reason doesn't seem your fault, please submit a bug report at
http://forum.chaosforge.org/, be sure to include the last entries in
your error.log that will get created once you hit Enter.
^C
An unhandled exception occurred at $00007F585CF0B818 :
EAccessViolation : Access violation
$00007F585CF0B818
$00007F585CE3B670
$0000000000428BCC
----------------------------------------------------------------------
Timestamp :
Error level : FATAL EXCEPTION
Message : Fatal exception encountered
An unhandled exception occurred at $00007F0681B031F0 :
An unhandled exception occurred at $00007F0681B031F0 :
EAccessViolation :
EAccessViolation :
$00007F0681B031F0
$00007F0681B031F0
----------------------------------------------------------------------
This was completely unhelpful. Eventually I realized that I was missing a necessary library. On Ubuntu 19.04, I needed to install the following:
$ sudo apt install libsdl-image1.2 libsdl-mixer1.2 libsdl1.2debian libsmpeg0 lua5.1 timidity libpng16-16
In my case, it was libsdl-image1.2 that was missing.
Hope this helps!