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Missing libjpeg.so.8 (jpeg vs libjpeg-turbo)
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majoron
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PostPosted: Wed Feb 11, 2015 3:03 pm    Post subject: Missing libjpeg.so.8 (jpeg vs libjpeg-turbo) Reply with quote

Hello,
libjpeg.so.8 is missing in my system, and I need it. It should be provided by media-libs/jpeg BUT that package is not compatible with media-libs/libjpeg-turbo, which is needed for other reasons.

I guess that the solution will be the migration to the new approach to multilib systems in Gentoo. But I read the wiki page and it looks to me not completely safe for my requirements: I cannot afford to have the system down for some days if something does not work properly in the process (the docs clearly state that problems are expected to arise).

In this old thread one possible hack is proposed. But, is there an official solution to this problem?

TIA
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23306
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Joined: 22 Jun 2003
Posts: 79

PostPosted: Thu Feb 19, 2015 7:58 pm    Post subject: Reply with quote

Having the same issue, ned it for lightworks... but can't find a propper way to get it.
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jburns
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PostPosted: Thu Feb 19, 2015 8:44 pm    Post subject: Reply with quote

Try
Code:
emerge media-libs/jpeg:8
which is compaible with media-libs/libjpeg-turbo.
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majoron
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PostPosted: Mon Feb 23, 2015 2:26 pm    Post subject: Reply with quote

jburns wrote:
Try
Code:
emerge media-libs/jpeg:8
which is compaible with media-libs/libjpeg-turbo.

Yes, that made it!
Thanks a lot
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crabvk
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PostPosted: Tue Dec 29, 2020 6:59 pm    Post subject: Reply with quote

You may configure libjpeg-turbo with -DWITH_JPEG8=1 (https://github.com/libjpeg-turbo/libjpeg-turbo#libjpeg-v7-and-v8-apiabi-emulation)
(It'll create libjpeg.so.8 as well. Idk why it's not in use flags. I've tried with libjpeg-turbo 2.0.6)
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Ionen
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Joined: 06 Dec 2018
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PostPosted: Tue Dec 29, 2020 7:06 pm    Post subject: Reply with quote

crabvk wrote:
Idk why it's not in use flags.
Probably because it wasn't relevant while jpeg:8 existed, but then it got dropped in a rush for security and the topic didn't come up (doesn't help jpeg:8 is only scarcely used for binary compat).

You could always try opening a bug, it doesn't have a maintainer right now but maybe someone will want to add support anyway. Not something I've tested myself.
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Ionen
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PostPosted: Wed Dec 30, 2020 12:27 pm    Post subject: Reply with quote

^ on a related note, steam-overlay has media-libs/jpeg-compat based on that. I don't use it but seen it mentioned on gentoo-dev (also farewell media-libs/jpeg).
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asturm
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Joined: 05 Apr 2007
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PostPosted: Wed Dec 30, 2020 12:33 pm    Post subject: Reply with quote

Since this topic came up again, it should be pointed out that media-libs/jpeg is on its way to be last-rited.
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