When running from EiffelStudio feature `c_open_dev' (below) seems to work, but when running from the F_Code directory from command line (with sudo or not), it cannot find "dev/mem" or "dev/gpiomem".
What am I missing about the call to open()?
$PATH when EiffelStudio started:
/home/pi/jj_eiffel/Eiffel_19.05/studio/spec/linux-armv7/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:/usr/local/Eiffel_19.05/studio/spec/linux-armv7/bin
$PATH running from terminal:
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games