[gmx-users] Trying to link C++ code with libgmx. Please help!

[David van der Spoel]

Semen Esilevsky wrote:
> Dear gmx users,
> I'm trying to read and write xtc files from my own code written in standard C++. I included xtcio.h and linking with libgmx.a. However when I'm trying to compile I get hundreds of errors like:
> 
> /usr/local/gromacs/include/gromacs/types/simple.h|124|error: reference to ‘real’ is ambiguous|
> /usr/local/gromacs/include/gromacs/types/simple.h|109|error: candidates are: typedef float real|
> /usr/include/c++/4.3/complex|538|error:                 template<class _Tp> const _Tp& std::real(const std::complex<_Tp>&)|
> ....
> 
> As far as I can figure out the problem is in simple.h where multiple redefinitions of real occur:
> 
> typedef real            rvec[DIM];
> typedef double           dvec[DIM];
> typedef real            matrix[DIM][DIM];
> typedef real            tensor[DIM][DIM];
> typedef int             ivec[DIM];
> typedef int             imatrix[DIM][DIM];
> 
> I have absolutely no idea how to overcome this error. Any help is appreciated!
> 
We are about to release a special external library for this purpose. As 
a matter of fact you can download the development version of it using 
cvs. (cvs co libxdrfile). trr support is not functional yet, but xtc works.

> Regards,
> Semen
> 
> 
> 
>       
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-- 
David van der Spoel, Ph.D., Professor of Biology
Molec. Biophys. group, Dept. of Cell & Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:	+46184714205. Fax: +4618511755.
spoel at xray.bmc.uu.se	spoel at gromacs.org   http://folding.bmc.uu.se