[Tux4kids-tuxtype-dev] [Tuxmath-devel] libt4k_common update

[David Bruce]

Hi Brendan,

> One question I'd like to bring up in the meantime is how to handle the
> (rather unlikely?) situation where a user wants to build with a
> "canned" version of t4k_common but doesn't have RSVG/SDLPango
> available. This will (and should) presently fail with unresolved
> linkage. libt4k_common can support usage of SDL_ttf or PNG, but I'm
> not sure how easy/possible it is to compile the shared library with
> those flexible dependencies. In essence, we'd be shifting the
> conditional compilation of the backend in functions like LoadImage
> (which prefers, but doesn't need, RSVG) from t4k_common compile time
> to tuxtype compile-time. Worth it? Probably not, but part of me thinks
> it would be fun to try.

So, if I understand correctly, the question is whether it is possible
to compile t4k_common without knowing whether e.g. SDL_Pango is
available at the time of subsequent linkage with tuxtype?  This would
I guess be a sort of conditional linkage, in which the link failures
would result in an attempt to link with the fallback library, rather
than just failing.  I have no idea if this is possible - if it is, I
don't know how to do it.

David