[llvm-dev] Question about downloading and building LLVM 9.0.0 from source

Thomas Lively via llvm-dev llvm-dev at lists.llvm.org
Mon Apr 15 11:51:07 PDT 2019

Hi Osman,

Emscripten uses tip-of-tree LLVM instead of the major releases, and the
current version number of tip-of tree LLVM is 9. Emscripten uses
tip-of-tree LLVM because the WebAssembly backend is being developed
alongside emscripten, so the major LLVM releases quickly become out of date
with respect to the latest emscripten features. LLVM 9 does not need to be
officially released in order for you to use it with Emscripten. WebAssembly
is a regular target since LLVM 8, not an experimental target.

In the future, it would be better to send questions related to Emscripten
to the emscripten-discuss email list, since Emscripten is not relevant to
most LLVM developers:

On Mon, Apr 15, 2019 at 10:17 AM Osman Zakir via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi.
> I noticed that version 9 is still isn't ready, but Emscripten expects you
> to use it as the LLVM WASM backend.  Emscripten wants us to use the latest
> upstream version of LLVM.  So I my question is when will the current
> upstream version, version 9, be ready to use?  Also, is WebAssembly still
> an experimental target to build (LLVM_EXPERIMENTAL_TARGETS_TO_BUILD
> setting) or is it a regular target now?
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> llvm-dev at lists.llvm.org
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