gfortran line length limit

Investigate the options

-ffixed-line-length
-ffree-line-length

GCC manual:

-ffixed-line-length-n

Set column after which characters are ignored in typical fixed-form lines in the source file... Popular values for n include 72 (the standard and the default), 80 (card image), and 132 (corresponding to “extended-source” options in some popular compilers). n may also be ‘none’, meaning that the entire line is meaningful and that continued character constants never have implicit spaces appended to them to fill out the line. -ffixed-line-length-0 means the same thing as -ffixed-line-length-none.

-ffree-line-length-n

Set column after which characters are ignored in typical free-form lines in the source file. The default value is 132. n may be ‘none’, meaning that the entire line is meaningful. -ffree-line-length-0 means the same thing as -ffree-line-length-none.

I used -ffree-line-length-none so that my extra long lines in the source code didn't cause errors