gfortran: error: unrecognized command line option ‘-r8’

[ram90]

When I tried to install a numerical code in cluster, I encountered the following error. Based on the error message, I understood that the installed gnu fortran version do not recognize the command option -r8.

Error message
gfortran: error: unrecognized command line option ‘-r8’; did you mean ‘-k8’? gfortran: error: unrecognized command line option ‘-i-dynamic’; did you mean ‘-rdynamic’?

Fortran version
GNU Fortran (GCC) version 7.2.0

Can you please help me with this? In addition, do you know how to change the flag -r8 to -fdefault-real-8?

Please let me know for any other question.


Thanks in advance,
Ram

 

[wizardfromoz]

G'day Ram and welcome to linux.org

I have moved this Thread to (had to toss a coin between Linux Other and) Command Line, both of which have references to Fortran and the like.

Your question is beyond my paygrade (although I learned some Minitran back in 1972, but did not follow through with it.

We have some programmers here, and I am hoping one or more of them can assist.

I will watch this Thread and see if I can learn something

Good luck!

Chris Turner
wizardfromoz