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[CMake] Don't cache LLVM_MAIN_SRC_DIR

Authored by phosek on Feb 8 2019, 7:14 PM.



If we're not in a standalone build, this variable should be already
set, so there's no need to set it again or to cache it.

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phosek created this revision.Feb 8 2019, 7:14 PM

@mgorny mentioned a need for this to be cached in D57406#1376170, so I'll let him weigh in on this.

mgorny accepted this revision.Feb 9 2019, 5:28 AM

I suppose you are correct. It shouldn't need to be redefined when doing in-tree build.

Disclaimer: I haven't tested it. Presuming you've tested both variants.

This revision is now accepted and ready to land.Feb 9 2019, 5:28 AM
This revision was automatically updated to reflect the committed changes.
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