[physfs] Option to disable CMake docs

[Edward Rudd]

> On Nov 27, 2018, at 4:07 PM, Ryan C. Gordon <icculus at icculus.org> wrote:
> 
> 
>> I also found it strange having a shared and static library build option and not just one lib with a configurable type.
> 
> This was merely my inexperience with CMake.  Anything that is obviously wrong in there is my fault and should be changed.

In my cmake's I generally do have a shared and a static one (it's common practice) as there are usually other changes besides just the SHARED or STATIC cmake config option. (e.g. making symbols public or private). This is especially the case with Windows libraries.


> --ryan.
> 
> 
> 
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