Fix Cargo change detection in the runtime

[jelmansouri]

• Fix change detection for by setting the full path of rs and lib file, otherwise the build script gets evaluated at each run, the problem arises when the crate using the runtime is down the dependency graph causing all it's children to be compiled.
• Using target instead of host, to build for cross compilation scenarios (not tested)

[jelmansouri]

If the change make sense can a new patch version be generated with this ?

[Twinklebear]

Thanks @jelmansouri , I think this looks good! I think the move to use TARGET instead of HOST is probably right for cross-compilation, and makes me think should actually change the code here https://github.com/Twinklebear/ispc-rs/blob/master/compile/src/lib.rs#L355 to use the set target instead as well (for cross compiling). I'm not entirely sure cross-compilation works in ispc-rs, it's not something I've tested out.

[Twinklebear]

I'll aim to put out a new release tomorrow with this + some tweaks for arm systems in it

[jelmansouri]

I'll aim to put out a new release tomorrow with this + some tweaks for arm systems in it

Thanks a lot! I'll try to test out cross compilation to make sure it works. My project is planning to start building the windows-msvc target from linux soon.

[Twinklebear]

That's good to know, right now ispc-rs doesn't pass the --target-os flag through so I think cross-OS compilation wouldn't quite work. I can add that in before the release so it might work, let me know how it goes!

[Twinklebear]

This is now out in 1.0.11! Let me know how it works (or doesn't :) )

[jelmansouri]

This is now out in 1.0.11! Let me know how it works (or doesn't :) )

It works! Thanks!

[jelmansouri]

I can confirm that cross linking works when using a prebuild kernel, I'll try building the kernel next and will report back/fix the issue! Thanks @Twinklebear