Re: distribute linux-headers to build out-of-tree Rust modules

[Geert Stappers <stappers@stappers.nl>]

On Sat, Mar 11, 2023 at 03:01:00PM +0100, Andrea Righi wrote:
> Hello,
> 
> I'm trying to distribute a linux-headers package (deb) that would allow
> to build out-of-tree Rust modules.
> 
> Everything looks fine, except for the following error:
> 
> error[E0461]: couldn't find crate `core` with expected target triple target-10951614936105594995

Number ends with 4995

>   |
>   = note: the following crate versions were found:
>           crate `core`, target triple target-3759196539525232825: /usr/src/linux-headers-6.2.0-16-generic/rust/libcore.rmeta

Number ends with 2825



> All I need to do is to "refresh" the headers by running a
> "make modules_prepare" after installing my linux-headers package on my
> system and then everything works perfectly.

Acknowledge

 
> Is this because my system, where I try to build the out-of-tree module,
> has different toolchain versions (e.g., binutils) than the build host?
> 
> Any pointer/documentation to better understand how the target triple
> version is determined?


I don't know and I could not resist to ask:


  Would it make sense that

     make

  would include

     make modules_prepare


  ?



Groeten
Geert Stappers
-- 
Silence is hard to parse