[pkg-nvidia-devel] Bug#594298: Bug#594298: libgl1-nvidia-alternatives: alternatives are very strange and probably not correct

[Russ Allbery]

Norbert Preining <preining at logic.at> writes:
> On Mi, 25 Aug 2010, Russ Allbery wrote:

>> Yes, that's exactly as the packages are designed, since applications
>> should be linked against the MESA (free) library, not against the
>> proprietary NVIDIA library.  The libGL.so link is only used while
>> linking software, not at runtime.

> Really? I remember faintly when I wrote my intel-nvidia switcher that 
> libGL.so was sometimes preferred over libGL.so.1.

> What about a program dlopening libGL.so ? I guess that some of the
> games might do that.

If so, that's a bug; dlopen like any other runtime use of a shared library
needs to open the SONAME that it expects, since otherwise it can get
segfaults or worse if the functions don't take the arguments it expects.

> Are you sure that libGL.so is *never* used at runtime?

Pretty sure, yup.  We haven't had any problems with this so far.

-- 
Russ Allbery (rra at debian.org)               <http://www.eyrie.org/~eagle/>