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4.1 Option Summary

Here is a summary of all the options specific to GNU Fortran, grouped by type. Explanations are in the following sections.

Fortran Language Options
See Options Controlling Fortran Dialect. 
          -ffree-form  -fno-fixed-form 
          -fdollar-ok  -fimplicit-none  -fmax-identifier-length 
          -std=std
          -ffixed-line-length-n  -ffixed-line-length-none 
          -fdefault-double-8  -fdefault-integer-8  -fdefault-real-8

Warning Options
See Options to Request or Suppress Warnings. 
          -fsyntax-only  -pedantic  -pedantic-errors 
          -w  -Wall  -Waliasing  -Wconversion 
          -Wimplicit-interface  -Wnonstd-intrinsics  -Wsurprising  -Wunderflow 
          -Wunused-labels -Wline-truncation -W

Debugging Options
See Options for Debugging Your Program or GCC. 
          -fdump-parse-tree

Directory Options
See Options for Directory Search. 
          -Idir  -Mdir

Code Generation Options
See Options for Code Generation Conventions. 
          -fno-automatic -ff2c -fno-underscoring  -fsecond-underscore 
          -fbounds-check  -fmax-stack-var-size=n 
          -fpackderived  -frepack-arrays