Bug 93059

Summary:	[PATCH] i965 fails to load miserably on musl libc due to underlinking
Product:	Mesa	Reporter:	Kylie McClain <kylie>
Component:	Drivers/DRI/i965	Assignee:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Status:	RESOLVED MOVED	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	normal
Priority:	medium	CC:	ajax, emil.l.velikov
Version:	11.0
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	[PATCH] i965: don't underlink i965_dri.so, causes miserable failure on musl libc

Description Kylie McClain 2015-11-21 21:43:10 UTC

Created attachment 120007 [details]
[PATCH] i965: don't underlink i965_dri.so, causes miserable failure on musl libc

musl libc doesn't like lazy binding, which i965_dri.so depends on to load correctly in Xorg. As such, it is underlinked and doesn't load because of linking issues on musl libc.

More information: http://wiki.musl-libc.org/wiki/Functional_differences_from_glibc#Lazy_bindings

Comment 1 Matt Turner 2015-11-22 19:25:52 UTC

"miserably"


I don't think dri drivers can link directly to libglapi. Cc'ing Emil.

Comment 2 Emil Velikov 2015-11-22 22:30:34 UTC

(In reply to Matt Turner from comment #1)
> "miserably"
> 
> 
> I don't think dri drivers can link directly to libglapi. Cc'ing Emil.
In theory there should be no problems when combined with recent enough (don't recall the date/release) xserver/libglx. Priorly libglx was providing the symbols, as it was copying a ton of the gl dispatch from mesa. Nowadays it links against libGL and relies on it to handle things.

On the whole topic I've been leaning towards:
 - folding the static glapi only for special users (osmesa, libgl-xlib)
 - "forcing" everyone else to shared one and dropping the configure switch
 - figuring some deprecation period and/or experimentally adding the libglapi link to the dri modules.

I'm leaning that foo_dri.so linked with libglapi and old xserver should still work, although that is to be tested.

All that aside: albeit not ideal, some libraries need to stay underlinked. Musl devs should seriously reconsider and add support for it.

Comment 3 Matt Turner 2016-11-03 21:14:56 UTC

ajax probably has an opinion.

Comment 4 GitLab Migration User 2019-09-25 18:55:12 UTC

-- GitLab Migration Automatic Message --

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