Chromium doesn't compile because of the lack of sve support

dxwil · n00b Joined: 05 Aug 2024 Posts: 7

I am trying to compile chromium on the M1 arm64 chip, which according to Google supports neon but not sve. Chromium is giving me error that target needs sve support, how can I compile chromium without it?

kgdrenefort · Posted: Thu Aug 08, 2024 9:55 am Post subject:

Hello,

After some googling, the most relevant link is… this topic, fat luck. I did not spotted a bug either here, as the wiki page of Chromium (from gentoo) isn't providing much useful info about that.

First thing, I never used Gentoo on ARM64 system, but maybe you could try this : Not a single modification of the use flag, just try to build it as it is (if you did not tried yet). Maybe one of your USE flag is making a mess ? At this point sadly it's guessing :/.

Sadly there is no chromium-bin to test if it's possible to get this build working on your architecture.

Maybe you could also try to follow the Chromium compilation guide instead of using emerge. If it works with the Google instruction, it could mean the problem is on Gentoo side (misconfigured ebuild ? bugs ?).

Hope you find your fix.

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GASPARD DE RENEFORT Kévin
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dxwil · n00b Joined: 05 Aug 2024 Posts: 7

Yeah I'll try compiling with the default use flags, that's a good idea. The official build instructions lists x86_64 as a requirement so there is no guide for arm. I've also reported a chromium bug here: https://issues.chromium.org/issues/357889510

kgdrenefort · Posted: Thu Aug 08, 2024 10:26 am Post subject:

dxwil · n00b Joined: 05 Aug 2024 Posts: 7

Tried with the default use flags, but the results is unfortunately still the same

zerdox · n00b Joined: 11 Sep 2023 Posts: 5

I see from your logs that it's coming from libvpx. I have it installed on my M1. And I also can't build chromium, though, my build fails even earlier and for different reason.
Maybe we could system-libvpx somehow, probably it will require lots of work if it's even possible. I will investigate further and will try to compile chromium other ways as it's blocking for me. Latest I could build is 116, not tried 117 and further, but current available versions are broken for all M1 I guess
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zerdox · n00b Joined: 11 Sep 2023 Posts: 5

ok now i see that third_party/libyuv/source/rotate_sme fails for me. same reason

dE_logics · Advocate Joined: 02 Jan 2009 Posts: 2283 Location: $TERM

/proc/cpuinfo has sve? If not, then qemu softemu compiling on a powerful x86 machine may help, but the build binaries may results in 'invalid opcode'.
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NeddySeagoon · Posted: Thu Dec 12, 2024 11:37 am Post subject:

Try changing -march to -mcpu.
Do not use -march at all. -mtune=native should be harmless but being old and synical, I would remove that.

I don't know that this is your problem but I've seen a chromium build on a Pi4 go wrong when -march was used.
I tried to reproduce the bug but I've always used -mcpu on arm64 and it failed to fail. :)
The build time was 3d 12h.
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NeddySeagoon · Posted: Thu Dec 12, 2024 11:58 am Post subject:

Moved from Multimedia to Gentoo on ARM.

An M1 is one of these.
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