sgraenitz added a comment.

In D56531#inline-500764 <https://reviews.llvm.org/D56531#inline-500764>, 
@labath wrote:

> it should be possible to build lldb against an already-installed llvm




In D56531#inline-501059 <https://reviews.llvm.org/D56531#inline-501059>, 
@xiaobai wrote:

> When I wrote this I thought that it is possible to build against an installed 
> LLVM, but I don't think that's currently possible. For example [...]


IIUC all LLVM subprojects are made for *testing* against the build-tree. LLDB 
tests depend on LLVMTestingSupport and others that are not part of the 
installed package (see `LLVM_EXPORTS_BUILDTREE_ONLY`). 
While the ability to *build* against an installed LLVM sounds like a good goal 
in principle, it's questionable what benefit it has without the ability to 
*test* the result. Thus, I wouldn't consider it a high prio for now.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D56531/new/

https://reviews.llvm.org/D56531



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