Add windows support

[ethanfrey]

We have tested running cosmwasm and cosmwasm-vm inside a windows CI, so the code should work fine.

However, we currently only built the rust dll for unix and osx. We need to add a build step to set it up for windows and properly test that.

[ethanfrey]

Interesting link: https://github.com/KodrAus/rust-cross-compile

Maybe the solution isn't so hard: https://www.reddit.com/r/rust/comments/5k8uab/crosscompiling_from_ubuntu_to_windows_with_rustup/

[ethanfrey]

I did make an attempt at cross-compiling and it died:

    Running `rustc --crate-name wasmer_singlepass_backend --edition=2018 /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/wasmer-singlepass-backend-0.12.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C codegen-units=16 -C overflow-checks=on --cfg 'feature="default"' -C metadata=fac002c34795faba -C extra-filename=-fac002c34795faba -C rpath --out-dir /code/target/x86_64-pc-windows-gnu/release/deps --target x86_64-pc-windows-gnu -C linker=x86_64-w64-mingw32-gcc -L dependency=/code/target/x86_64-pc-windows-gnu/release/deps -L dependency=/code/target/release/deps --extern bincode=/code/target/x86_64-pc-windows-gnu/release/deps/libbincode-ba725330654bc85e.rmeta --extern byteorder=/code/target/x86_64-pc-windows-gnu/release/deps/libbyteorder-6cdaed6318135e69.rmeta --extern dynasm=/code/target/release/deps/libdynasm-a14e8b2930de2254.so --extern dynasmrt=/code/target/x86_64-pc-windows-gnu/release/deps/libdynasmrt-0fc71efd3e6c1545.rmeta --extern lazy_static=/code/target/x86_64-pc-windows-gnu/release/deps/liblazy_static-1fc62350d196435d.rmeta --extern libc=/code/target/x86_64-pc-windows-gnu/release/deps/liblibc-9ae905ace4cfa34d.rmeta --extern nix=/code/target/x86_64-pc-windows-gnu/release/deps/libnix-37fde1ff377e11bb.rmeta --extern serde=/code/target/x86_64-pc-windows-gnu/release/deps/libserde-07f110fe8ca537cc.rmeta --extern serde_derive=/code/target/release/deps/libserde_derive-d785957a175e1087.so --extern smallvec=/code/target/x86_64-pc-windows-gnu/release/deps/libsmallvec-ae360692e030ebea.rmeta --extern wasmer_runtime_core=/code/target/x86_64-pc-windows-gnu/release/deps/libwasmer_runtime_core-19ee2c36b3831787.rmeta --cap-lints allow -L native=/usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/winapi-x86_64-pc-windows-gnu-0.4.0/lib`
error: This crate doesn't yet support compiling on operating systems other than linux and macos and architectures other than x86_64
  --> /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/wasmer-singlepass-backend-0.12.0/src/lib.rs:19:1
   |
19 | compile_error!("This crate doesn't yet support compiling on operating systems other than linux and macos and architectures other than x86_64");

This is blocked on wasmerio/wasmer#347

[ethanfrey]

Left code here, if anyone wants to try: https://github.com/confio/go-cosmwasm/tree/windows-support

[webmaster128]

I did not find any OS restriction in the latest compiler-singlepass anymore (master/Wasmer Reborn). It might work now. But this is not tested.

[Hywan]

wasmer-compiler-singlepass works on any x86_64 OS now. It's also embedded in https://github.com/wasmerio/wasmer-go/ if it interests you :-).

[webmaster128]

wasmer-compiler-singlepass works on any x86_64 OS now. It's also embedded in https://github.com/wasmerio/wasmer-go/ if it interests you :-).

Are you sure about this? I just gave it a try and ran into this error: https://github.com/wasmerio/wasmer/blob/1.0.2/lib/compiler-singlepass/src/compiler.rs#L51-L55

[Hywan]

Yes, Windows support isn't here yet. We are working on it these present days :-). I missed that, sorry.

cc @syrusakbary

[leejw51crypto]

hello, also apple m1

[webmaster128]

@leejw51crypto Please see #53 for M1 (ARM Mac).

[webmaster128]

The project that is required for this ticket is now tracked as singlepass version 2.

[sidenaio]

Singlepass supports windows now

[webmaster128]

Singlepass supports windows now

Right. Happy to integrate once the feature is included in a Wasmer release. See also CosmWasm/cosmwasm#1138 for a test integration.

[tomtau]

https://wasmer.io/posts/wasmer-2.1

[webmaster128]

@tomtau Thanks for the nudge. We're on it now.

[tomtau]

the latest master branch of Wasmer seems to have some aarch64 support on Linux and macOS as well, but probably better to go with released versions first

[webmaster128]

the latest master branch of Wasmer seems to have some aarch64 support on Linux and macOS as well, but probably better to go with released versions first

You need to distinguish between Wasmer in general and the Singlepass backend, which we need. See #53 (comment)

[webmaster128]

See #288 for a PR to add Windows support