Re: [Mingw-cross-env-list] SDL2 release candidates

[Tony Theodore]

On 06/08/2013, at 8:49 PM, Martin Gerhardy <address@hidden> wrote:

> Is it somehow possible to define the dependencies of a package in relation to 
> their build target. I'm asking because I have written a library that works 
> with sdl1 and sdl2 - if sdl2 is available, I would like to take sdl2, but on 
> e.g. mingw32 I would have to take sdl1 as dependency.

There's no easy way to do this at the moment, I'm not sure it's a big issue as 
the worst that happens is some extra packages are downloaded - but they'll 
possibly be required for other packages/targets anyway. If the package 
dependencies are large (ie. qt for qwt), then you can always create another 
package with the different version as a dependency to avoid the download.

For setting the alternate configure options, see gdal or wxwidgets for an 
example. Basically, you break the build up into snippets and assemble the 
target rules from those. You could also write your configure scripts to detect 
this automatically.

Cheers,

Tony