https://bugs.freedesktop.org/show_bug.cgi?id=59296

Priority: medium Bug ID: 59296 Assignee: dri-devel@lists.freedesktop.org Summary: libGL cannot load r600_dri unless application itself is linked to libstdc++ Severity: normal Classification: Unclassified OS: All Reporter: rankincj@googlemail.com Hardware: Other Status: NEW Version: git Component: Drivers/Gallium/r600 Product: Mesa

I have just tried to play WoW using the latest 64 bit Mesa from git, and have noticed that libGL refuses to load the r600_dri object, complaining that:

libGL error: dlopen /usr/local/lib64/dri/r600_dri.so failed (/usr/local/lib64/dri/r600_dri.so: undefined symbol: _ZTVN10__cxxabiv120__si_class_type_infoE) libGL error: unable to load driver: r600_dri.so libGL error: driver pointer missing libGL error: failed to load driver: r600 libGL error: Try again with LIBGL_DEBUG=verbose for more details.

The symbol _ZTVN10__cxxabiv120__si_class_type_infoE is from libstdc++, which is not listed as a dynamic dependency of r600_dri. Since wine64 doesn't have a dynamic dependency on libstdc++ either, the dynamic linker does not know how to resolve this symbol.

After I had relinked r600_dri against libstdc++, WoW-64.exe was able to run successfully.