Re: [gentoo-user] initial compile time

[Rich Freeman <rich0@gentoo.org>]

On Mon, Aug 28, 2017 at 9:08 AM, Alan McKinnon <alan.mckinnon@gmail.com> wrote:
> On 28/08/2017 13:41, mad.scientist.at.large@tutanota.com wrote:
>> Ok, i'm starting to understand the install instructions, a steeper curve
>> than i expected but still way easier than LFS.
>> So, on a dual core athlon II 6000 (two cores, 3ghz)  roughly how long
>> will stage3 take to compile, roughly?
>
> How many extra USE flags did you set? What software did you decide to
> add? How old is the stage 3 you used? A recent one will obviously need
> fewer recompiles than a 6-month old one. But to portage it's all the
> same - make a list of stuff to be done and do it from the beginning.
>

I imagine that some people like to rebuild everything after changing
their CFLAGS, but there is certainly no requirement to do so.

Also, I tend to favor getting the system booting on its own before
fiddling with it.  There isn't much you need to build before you have
the system booting, and at that point you're at least running while
you're doing the rest.  If I'm going to switch the init implementation
then I'll do that before the first boot since that impacts the grub
configuration.  Systemd does take a bit to build, but it is still a
far cry from doing a ton of rebuilds.

However, if you do have a /etc/portage configuration you like, and a
/var/lib/portage/world, then you can just update these and the profile
and just do an emerge -NDu world and watch it all come into place.  I
have a typical set of configuration files I deploy on any new system
so I will often build this stuff directly before rebooting (which
includes stuff like systemd, vim, screen, grub, dracut, and so on).

-- 
Rich