[flang-commits] [flang] [flang][build] Fixed paths discrovery for the out-of-tree build. (PR #87822)

[Slava Zakharin via flang-commits]

vzakhari wrote:

> This commit is breaking this buildbot: https://lab.llvm.org/buildbot/#/builders/175
> 
> Could you please take a look?

I do not know how I missed that breakage.  Thank you for letting me know, @ceseo!  I will look immediately.

https://github.com/llvm/llvm-project/pull/87822