At the risk of sounding like a broken record - I've been talking about the next idea a lot recently ;) - I think this is something wasm2c can help with. I just gave a talk about how:
http://kripken.github.io/talks/2020/universal.html#/ The idea is that we add a single additional build target, "universal C", which compiles LLVM and Binaryen to portable C code that can then be compiled on practically any platform. So this new "build" would be C, and people would download those C files and run a simple command to build them locally. After the local build you end up with a normal executable that just works. There is still that build step locally, but it's the simplest build possible - no build system is needed, no special local setup, no cmake or configure, just run gcc or clang on a self-contained C file. That should be trivial on ARM64 MacOS or Linux as I believe they have a system C compiler installed by default. I'm not opposed to adding "proper" ARM64 builds, though - ARM64 builds would have some benefits over wasm2c. But wasm2c builds do cover the long tail of less-common platforms, and we can probably set them up much quicker too. I hope to do this for Binaryen soon anyhow. - Alon On Thu, Jul 9, 2020 at 11:30 AM Brion Vibber <[email protected]> wrote: > I've been a bit of an ARM64 enthusiast of late, trying out Linux, Windows > 10, and iOS devices that run on the ARM64/Aarch64 family of processors. > Emscripten works fine on these machines if one cares to do some light > development work on them, but since there's no binaries built from CI, the > standard emsdk can only install by building from source -- which can take > hours on a middleweight portable machine. > > Now that Apple is switching their Mac product line to ARM64 processors > over the next two years, it will likely become much more common next year > for people to have ARM64-based laptop and desktop computers, and some of > them will need to build something with emscripten in their workflows either > on macOS or on a virtualized Linux in Docker etc. > > From what I've seen presented at WWDC, the ARM64 Macs will support > emulated processes, so it may work to ship the x86_64 binaries with the > caveat that they will run much slower than native builds. > > Virtualized Linux builds would also need native ARM64 binaries to run, or > else they'd have to sit there for a couple hours compiling after every > upgrade. > > And of course there are already Windows 10 and Linux computers available > with ARM64 processes, on sale since a couple years ago and used in the wild > in modest numbers. > > I get the impression that the biggest roadblock to explicit ARM64 support > in emscripten is getting it into the CI infrastructure: > * Linux/ARM64 builds and testing? > * macOS/ARM64 builds and testing? > * Windows/ARM64 builds and testing? > > It's too soon to start on macOS since it's in beta, dev kits aren't > shipped yet, and there's no obvious way yet to figure out how to run tests > on a macOS ARM system in CI. :) > > And I'm less sure how important Win/ARM64 is, given you can use the > Linux/ARM64 version in WSL virtualization. But some folks prefer to develop > on native Windows, too. > > If there's any way we can start talking about Linux/ARM64 builds and > testing, I would be very happy about it! I would even kick in a few bucks > for a VM or something if that would help any. ;) > > Thanks for your time and your consideration! > > -- brion vibber (brion @ pobox.com / brion @ wikimedia.org) > Wikimedia Foundation > > -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/emscripten-discuss/CAFnWYT%3D3OLskq1KBtVrgKsq1PTS7eHDxyzpcBpmE8_Bfk7m6Kw%40mail.gmail.com > <https://groups.google.com/d/msgid/emscripten-discuss/CAFnWYT%3D3OLskq1KBtVrgKsq1PTS7eHDxyzpcBpmE8_Bfk7m6Kw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/CAEX4NpQoi1LZiw2dPjeMMy2zSf-Z8WFWjpP8K1C-gEx67O5jwg%40mail.gmail.com.
