Dear experts, I was trying to compile Seisan V12 under Ubuntu 20 but i was not able due to this error:
/usr/bin/x86_64-linux-gnu-ld: cannot find -lgfortran collect2: error: ld returned 1 exit status make: *** [Makefile:1557: linux64/tdmt_invc_seisan] Error 1 My compilers are: g++ (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0 gcc (Ubuntu 6.4.0-17ubuntu1) 6.4.0 20180424 GNU Fortran (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0 I have already installed all pre requisite such as libgfortran3, gfortran, libx11-dev The Makefile under PRO directory has already set SEISARCH: Linux64 Does anyone have any idea how to solve this issue?.Thank you in advance for your time. Stay safe and best regards, Tonino
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