[PATCH] D43213: [Fuzzer] Avoid the unnecessary rebuild of the custom libc++

[Petr Hosek via Phabricator via llvm-commits]

phosek added a comment.

In https://reviews.llvm.org/D43213#1016841, @morehouse wrote:

> Why not just call `llvm_ExternalProject_Add` rather than duplicating here?


Don't we still want to support the setup where compiler-rt is built as a standalone project in which case `llvm_ExternalProject_Add` wouldn't be available?


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D43213