<execution> requires TBB, as documented: https://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.2017
"Note 3: The Parallel Algorithms have an external dependency on Intel TBB 2018 or later. If the <execution> header is included then -ltbb must be used to link to TBB." If you use the parallel algos (or just include their headers) then the TBB headers are included. That's by design, they don't work otherwise. We can't do anythign about the fact that Intel deprecated their own API shortly after using contributing the PSTL headers to GCC, which depend on that API. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1933775 Title: libgcc-s1 and libstdc++6 depend on broken libtbb2 package To manage notifications about this bug go to: https://bugs.launchpad.net/gcc/+bug/1933775/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
