Bug#773303: libgl1-mesa-dev: Symlink error for libGL.so
Yeah.. After some more check I'm now sure it's a bug in driver side. Sadly Parallels doesn't have open source drivers so I can't patch it's installing behavior... (Ugly non-free software!)
Sorry for the misplaced bug report.
> 在 2014年12月17日，下午4:34，Simon McVittie <smcv@debian.org> 写道：
>
>> On Wed, 17 Dec 2014 at 14:52:33 +0800, Shan Ting wrote:
>> sudo stat /usr/lib/x86_64-linux-gnu/libGL.so
>> File: ‘/usr/lib/x86_64-linux-gnu/libGL.so’ -> ‘libGL.so.1.2.0’
>
> OK so far...
>
>> sudo stat /usr/lib/x86_64-linux-gnu/libGL.so.1.2.0
>> stat: cannot stat ‘/usr/lib/x86_64-linux-gnu/libGL.so.1.2.0’: No such file or directory
>
> ... but that seems wrong for the packages you have installed. You said
> you have:
>
>> Package: libgl1-mesa-dev
>> Version: 10.3.2-1
>> ...
>> ii libgl1-mesa-glx 10.3.2-1
>
> but those same packages on the same (amd64) architecture do provide
> libGL.so.1.2.0:
>
> % dpkg -s libgl1-mesa-dev
> ...
> Version: 10.3.2-1
> Depends: ..., libgl1-mesa-glx (= 10.3.2-1), ...
> ...
> % dpkg -L libgl1-mesa-glx:amd64
> ...
> /usr/lib/x86_64-linux-gnu/libGL.so.1.2.0
> /usr/lib/x86_64-linux-gnu/libGL.so.1
>
>> I’m not using lx-alternative-fglrx, glx-alternative-nvidia or
>> glx-diversions. The libGL.so.10.1.1.28614 is come from my graphic card
>> driver(parallels).
>
> Then I think this is a bug in your graphics card driver: it is overwriting
> and deleting files owned by the packaging system, but not finishing the job
> by taking responsibility for setting the target of the libGL.so symlink
> (and not participating in glx-alternatives like the non-free drivers
> packaged by Debian developers do, which would be the ideal thing).
>
>> Is there some reasons to use libGL.so.1.2.0 directly rather than
>> libGL.so.1?
>
> That's how libraries' development symlinks normally work. For instance,
> picking a random library for which I have development files
> installed (Gtk 2):
>
> % ls -l /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so
> lrwxrwxrwx 1 root root 27 Oct 10 18:57 /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so -> libgtk-x11-2.0.so.0.2400.25
> default|archetype% ls -l /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
> lrwxrwxrwx 1 root root 27 Oct 10 18:57 /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 -> libgtk-x11-2.0.so.0.2400.25
> % ls -l /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.25
> -rw-r--r-- 1 root root 4501992 Oct 10 18:57 /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.25
>
> The real file is the versioned one, and the development symlink and the
> SONAME (runtime) symlink both point to it.
>
> Regards,
> S
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