undefined symbol: _gfortran_concat_string

Traceback (most recent call last):
File «code/compute_SAI_precond_MLFMA.py», line 102, in <module>
compute_SAI(params_simu, simuDirName)
File «code/compute_SAI_precond_MLFMA.py», line 73, in compute_SAI
Wall_time_Mg_computation, CPU_time_Mg_computation = compute_SAIpreconditioner(tmpDirName, variables['C'], variables['chunkNumber_to_cubesNumbers'], variables['cubeNumber_to_chunkNumber'], variables['chunkNumber_to_processNumber'], variables['processNumber_to_ChunksNumbers'], params_simu.MAX_BLOCK_SIZE)
File «code/compute_SAI_precond_MLFMA.py», line 52, in compute_SAIpreconditioner
Mg_CSR(my_id, processNumber_to_ChunksNumbers, chunkNumber_to_cubesNumbers, cubeNumber_to_chunkNumber, ELEM_TYPE, Z_TMP_ELEM_TYPE, LIB_G2C, pathToReadFrom, pathToSaveTo)
File «/home/ws/Downloads/Puma-EM/code/FMM_precond.py», line 205, in Mg_CSR
Mg, src_RWG_numbers, rowIndexToColumnIndexes, test_RWG_numbers = chunk_of_Mg_CSR(cubesNumbers, chunkNumber, ELEM_TYPE, Z_TMP_ELEM_TYPE, LIB_G2C, pathToReadFrom, cubeNumber_to_chunkNumber)
File «/home/ws/Downloads/Puma-EM/code/FMM_precond.py», line 175, in chunk_of_Mg_CSR
Mg_tmp, Mg_q_array = MgPreconditionerComputationPerCube(cube, list_cubes_with_neighbors, list_Z_tmp, pathToReadFrom, cubeNumber_to_chunkNumber, ELEM_TYPE, Z_TMP_ELEM_TYPE, LIB_G2C)
File «/home/ws/Downloads/Puma-EM/code/FMM_precond.py», line 144, in MgPreconditionerComputationPerCube
Y_CFIE_near_local = computeMyPinvCC(Z_local_2, LIB_G2C)
File «/home/ws/Downloads/Puma-EM/code/myPseudoInv.py», line 108, in computeMyPinvCC
extra_compile_args = ['-O3', '-pthread', '-w'])
File «/usr/lib/python2.7/site-packages/scipy/weave/inline_tools.py», line 355, in inline
**kw)
File «/usr/lib/python2.7/site-packages/scipy/weave/inline_tools.py», line 488, in compile_function
exec 'import ' + module_name
File «<string>», line 1, in <module>
ImportError: /home/ws/.python27_compiled/sc_fa01621b812785a0e9577b22fcd579755.so: undefined symbol: _gfortran_concat_string


как починить?