Compile time filesystem access?

[Iain Buclaw]

On 30 January 2012 17:48, Manu <turkeyman at gmail.com> wrote:
> On 30 January 2012 19:30, Marco Leise <Marco.Leise at gmx.de> wrote:
>>
>> Am 30.01.2012, 15:24 Uhr, schrieb Manu <turkeyman at 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

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