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).