labath added a comment.

In https://reviews.llvm.org/D32787#744379, @xiangzhai wrote:

> Hi Pavel,
>
> > Could one of you guys check whether you really don't have the ppoll syscall 
> > (for example, are able to compile a simple program using ppoll (*))
>
> It has! clang is able to compile the simple program!
>
> > If you do, then I may need a bit more help to debug the cmake detection 
> > logic
>
> Yes, it needs to add the detection logic in the CMakeLists.txt :)


We already have it, it's in lldb/cmake/modules/LLDBGenerateConfig.cmake. We 
need to figure out why it's not working.

If you have some experience with cmake, it would be easiest if you could 
investigate yourself. Otherwise we'll have to do some remote debugging. If you 
can send me your CMakeError.log and CMakeOutput.log, I may be able to figure 
out what's going on.


Repository:
  rL LLVM

https://reviews.llvm.org/D32787



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