On 24 May 2018 at 15:20, Brian Groose wrote: > Bob, > > I definitely have -pthread in there, std::thread isn't defined with out it. > > Jonathan, > I was pulling together the linker command line to post and realized > that I had a -L directive that points to a directory containing > libstdc++, but it was the gcc 5.3.0 libstdc++. I did this because > it's the only way to get an rpath-type thing in the resulting binary. > Of course, once I removed this everything linked properly. Yes that will definitely cause it. The older std::thread uses a different implementation detail, so _State is not present in the older libstdc++.
