Re: [Getfem-users] getFEM g++ error

[Andrew Roberts]

It's becoming clearer my ignorance of how c++ (specific to getfem++ and in general) is to be rendered to run.  It seems I should run 'make laplacian' in /tests.  Then when excuting ./laplacian it begs for parameters.  So then I noticed what appears to be a perl file (laplacian.pl) that would generate such parameter schemes, so I run 'perl -W laplacian.pl' and it seems that the $ENV{srcdir} is undefined and so it spits errors.

Any help for a lowly c++ newb?

Thanks,

Andy

On Mon, May 30, 2016 at 3:14 AM, Yves Renard <address@hidden> wrote:

Dear Andy,

The libgetfem.a library should be complete ... of course you also have to link standard libraries (-lm) and optionnally  -lqhull -lblas -llapack and also optionnaly mumps. It the installation has been performed from the sources, the best in fact is to go to the tests directory of getfem

cd tests
rm laplacian.o
make laplacian

and compile with the same options (adapting the include directory and the location of the getfem library if the installation has been made).

Yves.

Le 30/05/2016 02:01, Andrew Roberts a écrit :

Hello,  I've been using the python interface upon discovery and installation of 5.0 but now I see I should use gmm for my transient analysis and requires c++.  Python worked fine, but upon attempting running the example laplacian.cc, with:

g++ -std=c++11 -o output laplacian.cc -I/usr/local/getfem/include -L/usr/local/getfem/lib/libgetfem.a

I get a stream of errors along the line of

laplacian.cc:(.text._ZN6getfem18ATN_smatrix_outputIN3gmm10row_matrixINS1_8rsvectorIdEEEEE5exec_Emt[_ZN6getfem18ATN_smatrix_outputIN3gmm10row_matrixINS1_8rsvectorIdEEEEE5exec_Emt]+0x356): undefined reference to `bgeot::operator<<(std::ostream&, bgeot::tensor_ranges const&)'
collect2: error: ld returned 1 exit status

Looking for assistance in this matter.

Thank you,

Andy

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  Yves Renard (address@hidden)       tel : (33) 04.72.43.87.08
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