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(g77-295.info)Option Summary

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Option Summary
==============

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

*Overall Options*
     Note: Options Controlling the Kind of Output.
          -fversion  -fset-g77-defaults  -fno-silent

*Shorthand Options*
     Note: Shorthand Options.
          -ff66  -fno-f66  -ff77  -fno-f77  -fno-ugly

*Fortran Language Options*
     Note: Options Controlling Fortran Dialect.
          -ffree-form  -fno-fixed-form  -ff90
          -fvxt  -fdollar-ok  -fno-backslash
          -fno-ugly-args  -fno-ugly-assign  -fno-ugly-assumed
          -fugly-comma  -fugly-complex  -fugly-init  -fugly-logint
          -fonetrip  -ftypeless-boz
          -fintrin-case-initcap  -fintrin-case-upper
          -fintrin-case-lower  -fintrin-case-any
          -fmatch-case-initcap  -fmatch-case-upper
          -fmatch-case-lower  -fmatch-case-any
          -fsource-case-upper -fsource-case-lower  -fsource-case-preserve
          -fsymbol-case-initcap  -fsymbol-case-upper
          -fsymbol-case-lower  -fsymbol-case-any
          -fcase-strict-upper  -fcase-strict-lower
          -fcase-initcap  -fcase-upper  -fcase-lower  -fcase-preserve
          -ff2c-intrinsics-delete  -ff2c-intrinsics-hide
          -ff2c-intrinsics-disable  -ff2c-intrinsics-enable
          -fbadu77-intrinsics-delete  -fbadu77-intrinsics-hide
          -fbadu77-intrinsics-disable  -fbadu77-intrinsics-enable
          -ff90-intrinsics-delete  -ff90-intrinsics-hide
          -ff90-intrinsics-disable  -ff90-intrinsics-enable
          -fgnu-intrinsics-delete  -fgnu-intrinsics-hide
          -fgnu-intrinsics-disable  -fgnu-intrinsics-enable
          -fmil-intrinsics-delete  -fmil-intrinsics-hide
          -fmil-intrinsics-disable  -fmil-intrinsics-enable
          -funix-intrinsics-delete  -funix-intrinsics-hide
          -funix-intrinsics-disable  -funix-intrinsics-enable
          -fvxt-intrinsics-delete  -fvxt-intrinsics-hide
          -fvxt-intrinsics-disable  -fvxt-intrinsics-enable
          -ffixed-line-length-N  -ffixed-line-length-none

*Warning Options*
     Note: Options to Request or Suppress Warnings.
          -fsyntax-only  -pedantic  -pedantic-errors  -fpedantic
          -w  -Wno-globals  -Wimplicit -Wunused  -Wuninitialized
          -Wall  -Wsurprising
          -Werror  -W

*Debugging Options*
     Note: Options for Debugging Your Program or GCC.
          -g

*Optimization Options*
     Note: Options that Control Optimization.
          -malign-double
          -ffloat-store  -fforce-mem  -fforce-addr  -fno-inline
          -ffast-math  -fstrength-reduce  -frerun-cse-after-loop
          -fexpensive-optimizations  -fdelayed-branch
          -fschedule-insns  -fschedule-insn2  -fcaller-saves
          -funroll-loops  -funroll-all-loops
          -fno-move-all-movables  -fno-reduce-all-givs
          -fno-rerun-loop-opt

*Directory Options*
     Note: Options for Directory Search.
          -IDIR  -I-

*Code Generation Options*
     Note: Options for Code Generation Conventions.
          -fno-automatic  -finit-local-zero  -fno-f2c
          -ff2c-library  -fno-underscoring  -fno-ident
          -fpcc-struct-return  -freg-struct-return
          -fshort-double  -fno-common  -fpack-struct
          -fzeros  -fno-second-underscore
          -fdebug-kludge  -femulate-complex
          -falias-check  -fargument-alias
          -fargument-noalias  -fno-argument-noalias-global
          -fno-globals  -fflatten-arrays
          -fbounds-check  -ffortran-bounds-check

Overall Options

Controlling the kind of output:

an executable, object files, assembler files, or preprocessed source.

Shorthand Options

Options that are shorthand for other options.

Fortran Dialect Options

Controlling the variant of Fortran language

compiled.

Warning Options

How picky should the compiler be?

Debugging Options

Symbol tables, measurements, and debugging dumps.

Optimize Options

How much optimization?

Preprocessor Options

Controlling header files and macro definitions.

Also, getting dependency information for Make.

Directory Options

Where to find header files and libraries.

Where to find the compiler executable files.

Code Gen Options

Specifying conventions for function calls, data layout

and register usage.