Gentoo Archives: gentoo-user

From: Mick <michaelkintzios@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: Mammoth emerge ...
Date: Thu, 03 May 2018 17:22:12
Message-Id: 1937917.KplyiEN492@dell_xps
In Reply to: Re: [gentoo-user] Re: Mammoth emerge ... by Corbin Bird
1 On Thursday, 3 May 2018 18:00:45 BST Corbin Bird wrote:
2 > .
3 > Chromium switched to 'clang++ v5.x' as its primary compiler.
4 > Why?
5 > The Chromium devs are using 'c++' features supported in gcc v8+.
6 > .
7 > So ... first compile run is with 'gcc' ... then Chromium is re-compiled
8 > with 'clang++'.
9 > That is what I am seeing ( console && log wise ).
10 > 2 Compile runs ... twice the time.
11 > .
12 > No gold linker setup on my system.
13 > Just how is 'clang++' supposed to work with 'ld.bfd'?
14 > .
15 > As far as I can tell, all optimization depending on '-march= / -mtune= '
16 > is still discarded, as well.
17 > ( clang / clang ++, does not seem to accept the '-march= / -mtune= / -O2
18 > / -pipe' switches either. )
19 > .
20 > Corbin
21
22 Thanks Corbin, it makes sense. Back in November build time jumped from 8 to
23 20 hours on my system. It's only gone further downhill since. :-(
24
25 I will give USE="jumbo-build" a spin later to see what improvement I may get.
26
27 --
28 Regards,
29 Mick

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Re: [gentoo-user] Re: Mammoth emerge ... Mick <michaelkintzios@×××××.com>