On 30 January 2012 17:48, Manu <turkey...@gmail.com> wrote: > On 30 January 2012 19:30, Marco Leise <marco.le...@gmx.de> wrote: >> >> Am 30.01.2012, 15:24 Uhr, schrieb Manu <turkey...@gmail.com>: >> >>> Here's another one I'm endlessly wishing I had in C. >>> I want to know if a library is present, and automatically disable >>> non-vital >>> features if it isn't. >>> It shits me to tears when I can't build something because a non-vital >>> dependant lib is not available for a given platform or just not wanted. >> >> >> A library is some .dll/.so in this case ? >> If you know it exists only on a certain platform: use version(Platform) >> If it _may_ be there, then compile the feature in, but load and check the >> library at runtime like you would do with a plugin. > > > I'm talking about static libs, since you need to link the supporting code > for DLL's anyway. > >> This sounds like what has been solved with configure scripts long ago. If >> you ever built e.g. GDC or most other Linux programs, they come with a >> little script that allows you to preconfigure your build process and takes >> care of linking to the different available libraries. > > > Configure scripts certainly don't 'solve' the problem, they make it worse... > now my buildscript has twice as many steps, nobody can understand it, and it > only works on linux. > >> ./configure --disable-libDontUseMe >> >> I never wrote one myself though... > > > Exactly, and nobody I've ever met has either. They just seem to exist, > magically appeared out of nowhere in all major linux projects that have > existed for 20 years or so. As far as I can tell, nobody ACTUALLY wrote > them, they've just always been there... ;)
Much like my book about the paranormal... I didn't buy, it just appeared in my room one night. -- Iain Buclaw *(p < e ? p++ : p) = (c & 0x0f) + '0';
