On Tue, Oct 1, 2013 at 3:25 PM, Jason E. Aten <j.e.a...@gmail.com> wrote:
> On Tue, Oct 1, 2013 at 12:21 PM, Daniel Micay <danielmi...@gmail.com>wrote:
>
>> A minimal application now looks like this:
>>
>>>
>>> #[no_std];
>>>
>>> #[start]
>>> fn main(_: int, _: **u8) -> int { 0 }
>>>
>>> There's no need for zero.rs anymore since you're now able to define the
>>> `#[lang]` items on an as-needed basis. You can even compile mixed
>>> C/C++/Rust programs with link-time optimization by using `clang`.
>>>
>>> It's a pain not having the standard library, but with a few intrinsics
>>> wrapped it's still a nicer language than C.
>>>
>>
> Whoa. Interesting. The mixed C++/Rust part is quite intriguing. Could you
> demonstrate how you would mix C++ and Rust with clang?
>
>
You use `rustc` to output LLVM IR (with --emit-llvm) and then compile with
`clang -flto -O3 foo.cc foo.bc` (you need a version close to Rust's LLVM,
3.3 won't understand the readnone/readonly parameter attributes). If you're
calling the Rust functions from C++ or the C++ functions from Rust you do
need to mark them as extern "C". It means you can have inlining and whole
program optimization between Rust and C/C++ though.
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