Build failing on ubuntu 16.04.5, gcc 5.4.0 about cobs HOT 3 CLOSED

make VERBOSE=1 -j4 causes the gcc command lines to be reported (thanks stackoverflow).

The (first) gcc command that is failing for me is /usr/bin/c++ ... -std=gnu++1z .... From what I find via google, gnu++1z is a synonym for c++17.

FWIW /usr/bin/c++ --version reports c++ (Ubuntu 5.4.0-6ubuntu1~16.04.10) 5.4.0 20160609

Possibly also relevant: I don't have the Boost.Filesystem library. According to readme.md, I think that is OK, right?

from cobs.

I fear gcc 5.4.0 is too old.
Boost.Filesystem is required OR a recent C++17 compiler with the std filesystem libraries.
I would suggest you upgrade to gcc7 or such.

from cobs.

That's the same conclusion I've come to. gcc 5.4 appears to have been released a couple months before c++17 was officially standardized.

I don't have admin privs on the machine. I can build and install a newer version of gcc under my home directory. But my notes indicate I've only been successful doing that one time in five attempts (and the success was ten years ago, while this machine was still sand on the beach).

Anyway, not really a problem with this package. You should close this issue.

Thanks.

from cobs.