Re: Rust, pkgsrc

[Mike Pumford <mpumford%mudcovered.org.uk@localhost>]

On 05/11/2018 16:34, bch wrote:
> The latest rust (1.30?) supporting the latest Firefox is *brutal* to 
> build. I’ve blown (and then resized) /tmp multiple times, and am now 
> exhausted on /usr for its build artifacts, before it’s even actually 
> installed.
>
> Does anybody have tips or tricks for dealing with rust-building (which 
> has always been terribly painful CPU-wise), or should I just move to 
> prebuilt packages? I think I’ve never seen a piece of software as 
> horrible to build as rust...
If you are on x86 and have access to a bigger system for building on 
have you considered running pbulk in a chroot environment or using 
pkg_comp. I've save myself a lot of time on my x86 systems by doing all 
the builds on a relatively well specced system and then just installing 
binary packages on the smaller ones.

Do you use MAKEJOBS on your pkgsrc builds? If you do then add 
MAKE_JOBS_SAFE=no to the rust package Makefile.

Without that I've found that make ends up spawning multiple rustc 
processes each of which internally then spawn even more threads causing 
ridiculous cpu overcommit. If you aren't using it and you are on a small 
system I don't know what to suggest. Even with that tweak compiling rust 
on a 4core (8 threads) 4GHz 64bit CPU with 16GB of RAM is still 
painfully slow and ends up maxing out the CPU for most of the build.

Mike


> -bch