compilation problem

[vdelecroix]

Hello,

I was trying to install polymake as a Sage package and ended up with the following compilation error

/usr/include/c++/7.1.1/limits:317:7: error: invalid abstract return type 'pm::graph::EdgeMapBase'
min() _GLIBCXX_USE_NOEXCEPT { return _Tp(); }

(I am using gcc 7.1.1). The downstream report for Sage as well as the complete traceback is available at

https://trac.sagemath.org/ticket/23289

Any help would be appreciated,
Vincent

[gawrilow]

Sorry, polymake can't be built with gcc 7 yet.
Please use clang or gcc 5/6.

[vdelecroix]

Thanks. Too bad for me. Are there plans to allow gcc 7.1?

[gawrilow]

We are observing the same error messages and can't find our fault. Probably we've got to wait until gcc 7 matures a little bit more...

[vdelecroix]

What about having a failure with an informative error message at configure step?

[blorenz]

Please try the workaround in the attached patch (which is originally from the fedora polymake maintainers). Our testsuite just completed without any further errors (with gcc 7.1.0).

Benjamin

[gawrilow]

Oh, a nice surprise!

Actually, #ifdef is not needed here, the proposed variant for gcc7 should work for any other compiler as well.

[vdelecroix]

Thanks! I posted a simplified patch at https://trac.sagemath.org/ticket/23289 for inclusion in SageMath.