[gmx-users] compilation error in multidimarray.h

[Mark Abraham]

Hi,

Intel doesn't supply a standard library, it always gets one from either a
gcc or msvc installed on the system. Which versions of gcc libstdc++ are
supported varies with the intel version, so you could follow the advice at
http://manual.gromacs.org/documentation/2020/install-guide/index.html#compiler
to try a different one, perhaps in a newer devtoolset.

Mark

On Thu, 26 Mar 2020 at 13:15, Herbert Fruchtl <
herbert.fruchtl at st-andrews.ac.uk> wrote:

> Folks,
>
> I am trying to compile gromacs 2020.1 with the Intel compilers (version
> 17.0.2). It fails with:
>
> /home/herbert/gromacs-2020.1/src/gromacs/math/multidimarray.h(153):
> error: expression must have a constant value
>        template<typename T = TContainer, typename = typename
> std::enable_if_t<!detail::is_resizable_v<T>>>
>
> In file included from
> /home/herbert/gromacs-2020.1/src/gromacs/math/densityfit.cpp(49):
> /opt/rh/devtoolset-6/root/usr/include/c++/6.3.1/type_traits(2523):
> error: class "std::enable_if<<error-constant>, void>" has no member "type"
>        using enable_if_t = typename enable_if<_Cond, _Tp>::type;
>
> That last part seems to indicate that the problem is in the g++
> libraries. Why does it use them at all? I have set CXX to icpc and
> sourced compilervars.sh. How do I get around this?
>
> Thanks,
>
>    Herbert
> --
> Herbert Fruchtl
> Senior Scientific Computing Officer
> School of Chemistry, School of Mathematics and Statistics University of
> St Andrews
> --
> The University of St Andrews is a charity registered in Scotland:
> No SC013532
> --
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