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I am using Armadillo along with OpenBLAS for linear algebraic operations. For a sample code I am linking these libraries using following commands:

 g++ sample.cpp -I "path\armadillo\include" -I "path\OpenBLAS\include" -L "path\OpenBLAS\lib" -llibopenblas

The code is compiled and runs successfully. Therefore, to link these libraries with CodeBlocks I used Linker setting and Search Directories option to specify location for libraries. But I am getting following errors:

path\OpenBLAS\lib\libopenblas.a(dormqr.o):dormqr.f|| undefined reference to `_gfortran_concat_string'|

Is this related with linking libraries or with compiler?

Swati45
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  • This sounds like a linker error. I googled _gfortran_concat_string and there seem to be solutions to this issue. – Anon Mail Nov 17 '15 at 18:20
  • The error is with linking gfortran with the project. I linked libgfortran.a file but I am now getting other errors: undefined reference to `signbitq' and undefined reference to `finiteq' – Swati45 Nov 18 '15 at 14:29
  • I assume those are from the math library. Look at the documentation to see which dependent libraries you need to add. Also, remember, their order matters. – Anon Mail Nov 18 '15 at 16:46

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