[OE-core] noticeably longer build (link?) times with binutils 2.26

[Khem Raj]

On Mon, Feb 8, 2016 at 3:20 PM, Trevor Woerner <twoerner at gmail.com> wrote:
> This is more of a "FYI", but I've noticed that the build time of my chromium
> recipe has gone from ~45 minutes to ~2h15m when the only thing that changes
> is to move openembedded-core from the commit just before upgrading binutils
> to version 2.26 ([fd75637] native.bbclass: Set CXXFLAGS from BUILD_CXXFLAGS
> not BUILD_CFLAGS) to the one immediately after ([86ade2c] binutils: Upgrade
> to 2.26).

Is it using gold linker ? if not can you try both bfd and gold

>
> Oddly enough I don't see this same behaviour when building, for example,
> core-image-minimal, so I have no idea what makes chromium so special and,
> therefore, whether other recipes might be similarly affected.
>
> Also, it seems as though a lot of the added time is coming from the linking
> stage, but I don't have (or know how to get) hard numbers for that. Is there
> a way to get build times for each task within one recipe?
>
> I've repeated this test 6 times (build just before binutils-2.26, build just
> after binutils-2.26) and the results are always within a couple minutes of
> each other. So I doubt this is some random occurrence.
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