Add CI for windows using appveyor.

[fulmicoton]

Add CI for windows using appveyor.

May want to check out https://github.com/japaric/trust/ to do that in a nicer way

[KodrAus]

I'm looking to get into contributing to tantivy, and wanted to check out trust too so would be happy to pick this one up if you don't have a tight deadline :)

[fulmicoton]

@KodrAus That would be very helpful!

[KodrAus]

So I've started taking a look at this and looks like Windows builds fine with GNU and MSVC toolchains so long as we're not trying to build simdcomp, I haven't been able to get that to compile on Windows yet, which isn't a big surprise, it doesn't look like it's really supported. Maybe my mingw-foo is just weak, but it'll be pretty easy to build an AppVeyor build script that excludes it.

I'm still checking out trust, so far it looks like the main benefit is automatic packaging of binary releases for major platforms, which might not be a thing unless you plan to release binaries in the future. It looks like it makes building for non-x86 architectures easier too though, but that also rules out simdcomp.

Have you had any success building tantivy with SIMD for Windows @fulmicoton? I'll go ahead and write an AppVeyor script that excludes SIMD and think more about how it might be supported.

[fulmicoton]

As discussed on gitter, I think it is probably safer to just not support windows.

[KodrAus]

We should probably note this in the readme, since it does actually build on Windows. It just kind of doesn't work.

[fulmicoton]

Absolutely. I will do that today... Or if you send me a pull request ill be happy to merge it.

[fulmicoton]

Just added that in README.md

[KodrAus]

Cool, so I guess this issue isn't relevant anymore? I opened a specific issue in tantivy-cli for integrating trust there.

[fulmicoton]

We'll eventually want to support windows in a very distant future. In the meanwhile, closing this as won't fix.
@KodrAus thanks for investigating, and creating the other issue.

[fulmicoton]

Was fixed by @KodrAus in #108