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Linking error with gcc on OSX Date: 2007/07/15 00:28 Name: David Benoit Dear OpenMX gurus, I have been trying unsucessfully to install openmx 3.2 on our Xserve clusters (OSX 10.4.10) for a few days now and am encountering the linking problem described below. It looks like a multiple definition/prototype problem... Anyone has any idea how to fix this?? I compile using: CC = mpicc -O3 -I/sw/include -Wstrict-prototypes LIB = -L/sw/lib -lfftw3 -lg2c -framework Accelerate The compilation stage is fine (apart from a few pointer re-castings needed for FFTW3), but at the linking stage I obtain: /usr/bin/ld: multiple definitions of symbol _ACnt_switch openmx.o definition of _ACnt_switch in section (__DATA,__common) openmx_common.o definition of _ACnt_switch in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _ADensity_Grid openmx.o definition of _ADensity_Grid in section (__DATA,__common) openmx_common.o definition of _ADensity_Grid in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Angle0_Orbital openmx.o definition of _Angle0_Orbital in section (__DATA,__common) openmx_common.o definition of _Angle0_Orbital in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Angle0_Spin openmx.o definition of _Angle0_Spin in section (__DATA,__common) openmx_common.o definition of _Angle0_Spin in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Angle1_Orbital openmx.o definition of _Angle1_Orbital in section (__DATA,__common) openmx_common.o definition of _Angle1_Orbital in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Angle1_Spin openmx.o definition of _Angle1_Spin in section (__DATA,__common) openmx_common.o definition of _Angle1_Spin in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Arho_EH0 openmx.o definition of _Arho_EH0 in section (__DATA,__common) openmx_common.o definition of _Arho_EH0 in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Atom_Symbol openmx.o definition of _Atom_Symbol in section (__DATA,__common) openmx_common.o definition of _Atom_Symbol in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Atom_Weight openmx.o definition of _Atom_Weight in section (__DATA,__common) openmx_common.o definition of _Atom_Weight in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Av_num openmx.o definition of _Av_num in section (__DATA,__common) openmx_common.o definition of _Av_num in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _BCR openmx.o definition of _BCR in section (__DATA,__common) openmx_common.o definition of _BCR in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Band_N_perpath openmx.o definition of _Band_N_perpath in section (__DATA,__common) openmx_common.o definition of _Band_N_perpath in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Band_Nkpath openmx.o definition of _Band_Nkpath in section (__DATA,__common) openmx_common.o definition of _Band_Nkpath in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Band_UnitCell openmx.o definition of _Band_UnitCell in section (__DATA,__common) openmx_common.o definition of _Band_UnitCell in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Band_disp_switch openmx.o definition of _Band_disp_switch in section (__DATA,__common) openmx_common.o definition of _Band_disp_switch in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Band_kPathUnit openmx.o definition of _Band_kPathUnit in section (__DATA,__common) openmx_common.o definition of _Band_kPathUnit in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Band_kname openmx.o definition of _Band_kname in section (__DATA,__common) openmx_common.o definition of _Band_kname in section (__DATA,__common) /usr/bin/ld: multiple definitions of symbol _Band_kpath openmx.o definition of _Band_kpath in section (__DATA,__common) openmx_common.o definition of _Band_kpath in section (__DATA,__common) etc... Any help gratefully received! Cheers, David

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Re: Linking error with gcc on OSX ( No.1 ) Date: 2007/09/28 14:12 Name: A.T. Check your object includes on the compilation directive line to make sure that you are not trying to include the same .o file more than once. Ex.: gcc fileToCompile.cpp $(OPTIONS) fone.o ftwo.o fxx.o fone.o (here fone.o comes up twice, so must remove one of them) Your problem might be different, but I found I had those causing the error recently - those .o lists do get rather long for large projects (sigh). Re: Linking error with gcc on OSX ( No.2 ) Date: 2007/10/09 00:03 Name: David Benoit  <david.benoit@uni-ulm.de> Dear A.T. It turned out to that the mpicc compiler had been overwritten by mpiCC...(non-case sensitive file system on OSX) So all of openmx had been compiled using c++ instead of c. switching back to the proper mpicc made everything ok again!! Thanks for your suggestions!

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