[PATCH] D108890: Document LLVM_ENABLE_RUNTIMES

[Chris Bieneman via Phabricator via llvm-commits]

beanz added a comment.

In D108890#2971295 <https://reviews.llvm.org/D108890#2971295>, @sylvestre.ledru wrote:

> Not sure what you mean here? Do you have an example?

The goal of the runtimes build initially was to preserve correct dependency ordering when building. You need the just-built clang to build the builtins libraries, and you need the builtins libraries before you can build any fully linked dynamic libraries or executables. So when you use the runtimes build the build ordering is clang -> compiler-rt builtins only -> everything else.


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