Thanks for the wonderful work!! The OGA program is so wonderful; the sorry about the bugs!
System is Ubuntu 18.04LTS:
I haven't tried -lbc run. Landscape gives me this.
Undefined symbol in the new OGA release for Linux
Loading User Defined Extensions table ... ok.
Landscape mode? ('n' for portrait): y
GX Package Initialization: Size = 11 8.5
/home/ragnar/WXLIBS/opengrads/Contents/Linux/Versions/2.2.1.oga.1/x86_64/grads: symbol lookup error: /usr/lib/x86_64-linux-gnu/libXrender.so.1: undefined symbol: _XGetRequest
Strange, I thought I had tested this under 18LTS on Windows. Which tarball did you install? Use the one for glibc_2.17. Also, send the output of 'ldd --version'.
I just tried the version with glibc_2.17 on a Ubuntu 18LTS virtual machine and it worked for me out of the box. Make sure sure you do not have any environment variable such as GAUDPT point to a COLA build.