[Mesa-dev] shared LLVM library causes program abortion
jfonseca at vmware.com
Tue May 17 12:24:31 PDT 2011
This is a problem that popped up on our testing with Fedora 15 and swrast_dri.so, but I believe it can happen with any /usr/lib/dri/*_dri.so , and will like happen with any other distro that tries to dynamically link DRI drivers against LLVM 2.8. Which is why I'm bring it up here instead of a bug report.
The issue is that the *_dri.so are linking against a shared LLVM library. When XCloseDisplay is called, the *_dri.so to be unloaded, but misteriously /usr/lib/dri/libllvmcore-2.8.so is not. A later attempt to use GL will cause
prog: for the -disable-mmx option: may only occur zero or one times!
Attached is a simple test program that illustrate this.
I believe the best alternative here is to build *_dri.so with -z nodelete when linking against a shared libLLVM*.
Other alternatives are:
- build *_dri.so with statically linked LLVM
- get LLVM to unload (but I think it's a loosing battle, because it really relies on , it can install signal handlers in some cases, and it will likely cause leaks)
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 1733 bytes
Desc: not available
More information about the mesa-dev