mehdi_amini added a comment.

In https://reviews.llvm.org/D30372#687060, @ahatanak wrote:

> In https://reviews.llvm.org/D30372#687054, @dlj wrote:
>
> > In https://reviews.llvm.org/D30372#686871, @ahatanak wrote:
> >
> > > Have you considered using "include_directories" in CMakeLists.txt to 
> > > avoid including "../Something.h"?
> >
> >
> > I don't want to take that approach, and there's a specific reason why: my 
> > concern isn't with three extra bytes, it's the fact that the headers are in 
> > an unusual place. It's typical to include headers from a subdirectory, or 
> > from the includes directory, but far less common to include from a parent 
> > lib directory. Hiding that fact seems strictly worse to me.
>
>
> OK. I was suggesting that only because LLVM already uses include_directories 
> to include a header that exists in the parent directory in some cases. 
> Apparently that's not what you wanted.


Yes it seems "common" in LLVM to do this in CMake: `include_directories( 
${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )`


https://reviews.llvm.org/D30372



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