[CMake] Re: premake build system

[Rodolfo Schulz de Lima]

Alexander Neundorf escreveu:

> I don't think so.
> "analyzing the CMakeLists.txt" means executing them basically completely.
> See the following pseudocode:
> 
> if(WIN32)
>   define some args
> else
>   define some other args
> endif

You're right, I didn't give it much thought it deserves.

> Oh, I think some cmake devs are on that too but there were some problems or it 
> didn't gain a lot... not sure.

Well, at least on linux I've been working with pch since cmake-2.4.7, 
albeit in a not so optimal way.

>> I right now need some kind of mapping data structure, like C++'s
>> std::map, to record whether I've already created a pch file with certain
>> flags, and what is its output name. I could do it easily with Lua
>> because it supports common programming structures (a map, which it
>> supports natively). But I'm stuck with cmake and must do ugly,
>> non-optimal (speed-wise) things to simulate this behavior.
> 
> Yes, you can get map-like behaviour by using just variables:
> SET(MY_MAP_${KEY} myValue)

That's a good trick, thanks. Those caveats should be written somewhere.

Regards,
rod