./configure goes through, build fails with no library

[lorenzobertini97 at gmail.com]

Dear list,

today I run ./configure to start a Qt6 build and it went through
without problems. The build then failed with:

> In file included from Dialog.cpp:15:
> GuiView.h:25:10: fatal error: QSvgWidget: File o directory non
> esistente
>    25 | #include <QSvgWidget>
>       |          ^~~~~~~~~~~~
> compilation terminated.

as I forgot to install QtSvg. Shouldn't ./configure tell me this ahead?

All the best
-- 
Lorenzo