[Bug driver/127158] Missing -lpthread for libstdc++ for older glibc

[ossman at cendio dot se via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127158

--- Comment #2 from Pierre Ossman <ossman at cendio dot se> ---
In our case, yes. Both in the sense of being the glibc gcc itself uses, as well
as being the target glibc when gcc was configured.