On 04/05/2017 22:52, Richard Gustafson wrote: > I am trying to compile a fortran (f90) code and trying to debug with > an array and subroutine check to see if variables are not lining up > correctly. > > If I use > > gfortran -fcheck=all fort1.exe fort1.f90 > > where fort1.f90 contains all of the code, it returns the following > message and does not compile: > > f951: error: unrecognized command line option "-fcheck=all" Check the output of gfortran -v Also check the output of gfortran -v -Wall -fcheck=all fort1.f90 Regards.