[llvm] [third-party] Add a snapshot of Boost.Math 1.89 standalone (PR #141508)

[Nikita Popov via llvm-commits]

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@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
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nikic wrote:

This looks reasonable to me. I wonder whether we can also drop the src/tr1 directory -- it seems like the actual implementations are all inside headers, so this is probably not needed? Not sure.

> Another alternative would be to keep this as a tarball in the monorepo and expand it upon build, but that adds complexity to the CMake and would be an annoyance for people who use e.g. Bazel.

Yeah, we should avoid shipping binary blobs like that in the monorepo, it's better to include the source code like done here.

https://github.com/llvm/llvm-project/pull/141508