On Sun, Oct 29, 2017 at 12:14:59PM -0400, Brian Groose wrote: > I'm hitting what looks like pr67478 (which is fixed by pr 68192). > > The example in PR67478 fails with the same error. However, I'm running g++ > 5.3.0, so the issue should be fixed with my compiler. > > I can see the symbols in libstdc++.a as type L as expected. > > Do I need to compile g++ with some special option for this? > > TLS using the thread_local keyword works fine, it's just that the linker > can't seem to find the symbols for call once: > ld: 0711-317 ERROR: Undefined symbol: std::__once_callable > ld: 0711-317 ERROR: Undefined symbol: std::__once_call > ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more > information. > collect2: error: ld returned 8 exit status > > Thanks! Hello Brian Do you have the flag '-pthread' set while compiling? Bob
