Missing gui component

[Bruce Steers <bsteers4@xxxxxxxxx>]

A user on my forum just had an error trying to get a program to compile
that he made 9 years ago.

The problem was the program was set to explicitly use gb.gtk but his new
system did not support gtk2.

I post this mail because of his error message that was something like
"cannot find Frame"

It basically failed to find any controls and gave that error.

Shouldn't it fail with a message about gb.gtk component not being found?

Can the compiler/ide detect and give an error message if the toolkit is
explicitly chosen (not a gui switcher) but the system is missing that
toolkit?

Respects
BruceS