[PATCH] D26649: [CMake] Support lld with LTO bootstrap

[Petr Hosek via cfe-commits]

phosek added a comment.

In https://reviews.llvm.org/D26649#595367, @mehdi_amini wrote:

> OK, but still, LLVM_ENABLE_LLD needs to be passed to stage-2, so it needs to be actually BOOTSTRAP_LLVM_ENABLE_LLD. 
>  I looked at all the CMake `_PASSTHROUGH` and didn't find it mentioned anywhere. We could make it auto-forwarded in this case maybe, @beanz is best to answer this.
>
> Have you looked into turning `if(LLVM_ENABLE_LLD)` into `if(BOOTSTRAP_LLVM_ENABLE_LLD)`?
>  Technically we may want to have the stage-2 linked with lld even if lld is not on the system and not available during stage1.


Yes, I just finished a test build and `BOOTSTRAP_LLVM_ENABLE_LLD` seems to work, see the updated diff.


Repository:
  rL LLVM

https://reviews.llvm.org/D26649