How to setup for G++

[oBFusCATed]

https://stackoverflow.com/questions/1639797/template-issue-causes-linker-error-c

[DanW_58]

That's an amazing link;  a lot of my problems went away by bringing definitions of template class functions back to the header file.
Including seemingly unrelated linker problems;  I thought my .o file was not being seen, but after bringing back functions to the
header file it all compiles and links.  I can't say I understand why;  though;  I know nothing about cookies and ovens;  I don't bake.