Re: Slow compilation of guile-2.1.x

[Jan Synáček]

On Fri, Nov 25, 2016 at 9:36 AM,  <address@hidden> wrote:
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> On Fri, Nov 25, 2016 at 08:31:23AM +0100, Jan Synáček wrote:
>> Hello,
>>
>> while building guile-2.1.4 for Fedora, I noticed that the compilation
>> got *really* slow. I didn't measure it precisely, but as can be seen
>> from [1] (about 20 minutes) and [2] (about 100 minutes with make check
>> disabled), the time difference between the builds is roughly 80
>> minutes... Release notes mention that the VM has been rewritten and
>> the source is now compiled into ELF, but is it supposed to be this
>> slow?
>
> Are you building from scratch? Because then yes, 2.1.x is expected
> to bootstrap slowly [1]. The solution offered ATM is delivering a
> half-bootstrapped system [2].

Yes, but even a small (about 3 modules and a few 100s LoC) project of
mine compiles about 3 times slower.

> TL;DR the compiler has become much smarter, but also tougher to
> build (but read the refs anyway: they're a worthy read).
>
> regards
>
> [1] 
> https://wingolog.org/archives/2016/01/11/the-half-strap-self-hosting-and-guile
> [2] https://wingolog.org/archives/2016/02/04/guile-compiler-tasks

Thank you, I wasn't aware of these. Good to know that it's not a bug.

Cheers,
-- 
Jan Synáček