I can confirm this. I was actually involved in implementing OMPT support in the LLVM OpenMP runtime and the startup works by overwriting the weak symbol ompt_start_tool via LD_PRELOAD. The symbol is there, as seen with $ objdump -T /usr/lib/x86_64-linux-gnu/libomp.so.5 | grep ompt 00000000000aa4b0 w DF .text 0000000000000036 VERSION ompt_start_tool
but there is no relocation: $ readelf --relocs /usr/lib/x86_64-linux-gnu/libomp.so.5 | grep ompt [no output] This might actually be the same problem as https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1964487 that I just reported. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1899199 Title: [libomp.so.5] OMPT with LD_PRELOAD not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1899199/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
