Re: Slow compilation of guile-2.1.x

[tomas]

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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].

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

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