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gfortran's command line options are indexed here without any initial `-' or `--'. Where an option has both positive and negative forms (such as -foption and -fno-option), relevant entries in the manual are indexed under the most appropriate form; it may sometimes be useful to look up both forms.
A-
predicate=
answer: Preprocessing Optionsallow-invalid-boz
: Fortran Dialect OptionsA
predicate=
answer: Preprocessing Optionsbackslash
: Fortran Dialect OptionsC
: Preprocessing Optionsc-prototypes
: Interoperability Optionsc-prototypes-external
: Interoperability OptionsCC
: Preprocessing Optionscpp
: Preprocessing OptionsdD
: Preprocessing OptionsdI
: Preprocessing OptionsdM
: Preprocessing OptionsdN
: Preprocessing OptionsD
name: Preprocessing OptionsD
name=
definition: Preprocessing OptionsdU
: Preprocessing Optionsfaggressive-function-elimination
: Code Gen Optionsfalign-commons
: Code Gen Optionsfall-intrinsics
: Fortran Dialect Optionsfallow-argument-mismatch
: Fortran Dialect Optionsfblas-matmul-limit
: Code Gen Optionsfbounds-check
: Code Gen Optionsfcheck
: Code Gen Optionsfcheck-array-temporaries
: Code Gen Optionsfcoarray
: Code Gen Optionsfconvert=
conversion: Runtime Optionsfcray-pointer
: Fortran Dialect Optionsfd-lines-as-code
: Fortran Dialect Optionsfd-lines-as-comments
: Fortran Dialect Optionsfdebug-aux-vars
: Debugging Optionsfdec
: Fortran Dialect Optionsfdec-blank-format-item
: Fortran Dialect Optionsfdec-char-conversions
: Fortran Dialect Optionsfdec-format-defaults
: Fortran Dialect Optionsfdec-include
: Fortran Dialect Optionsfdec-intrinsic-ints
: Fortran Dialect Optionsfdec-math
: Fortran Dialect Optionsfdec-static
: Fortran Dialect Optionsfdec-structure
: Fortran Dialect Optionsfdefault-double-8
: Fortran Dialect Optionsfdefault-integer-8
: Fortran Dialect Optionsfdefault-real-10
: Fortran Dialect Optionsfdefault-real-16
: Fortran Dialect Optionsfdefault-real-8
: Fortran Dialect Optionsfdollar-ok
: Fortran Dialect Optionsfdump-fortran-global
: Debugging Optionsfdump-fortran-optimized
: Debugging Optionsfdump-fortran-original
: Debugging Optionsfdump-parse-tree
: Debugging Optionsfexternal-blas
: Code Gen Optionsff2c
: Code Gen Optionsffixed-form
: Fortran Dialect Optionsffixed-line-length-
n: Fortran Dialect Optionsffpe-summary=
list: Debugging Optionsffpe-trap=
list: Debugging Optionsffree-form
: Fortran Dialect Optionsffree-line-length-
n: Fortran Dialect Optionsfimplicit-none
: Fortran Dialect Optionsfinit-character
: Code Gen Optionsfinit-derived
: Code Gen Optionsfinit-integer
: Code Gen Optionsfinit-local-zero
: Code Gen Optionsfinit-logical
: Code Gen Optionsfinit-real
: Code Gen Optionsfinline-arg-packing
: Code Gen Optionsfinline-matmul-limit
: Code Gen Optionsfinteger-4-integer-8
: Fortran Dialect Optionsfintrinsic-modules-path
dir: Directory Optionsfmax-array-constructor
: Code Gen Optionsfmax-errors=
n: Error and Warning Optionsfmax-identifier-length=
n: Fortran Dialect Optionsfmax-stack-var-size
: Code Gen Optionsfmax-subrecord-length=
length: Runtime Optionsfmodule-private
: Fortran Dialect Optionsfno-automatic
: Code Gen Optionsfno-backtrace
: Debugging Optionsfno-protect-parens
: Code Gen Optionsfno-underscoring
: Code Gen Optionsfopenacc
: Fortran Dialect Optionsfopenmp
: Fortran Dialect Optionsfpack-derived
: Code Gen Optionsfpad-source
: Fortran Dialect Optionsfpp
: Preprocessing Optionsfrange-check
: Fortran Dialect Optionsfreal-4-real-10
: Fortran Dialect Optionsfreal-4-real-16
: Fortran Dialect Optionsfreal-4-real-8
: Fortran Dialect Optionsfreal-8-real-10
: Fortran Dialect Optionsfreal-8-real-16
: Fortran Dialect Optionsfreal-8-real-4
: Fortran Dialect Optionsfrealloc-lhs
: Code Gen Optionsfrecord-marker=
length: Runtime Optionsfrecursive
: Code Gen Optionsfrepack-arrays
: Code Gen Optionsfrontend-loop-interchange
: Code Gen Optionsfrontend-optimize
: Code Gen Optionsfsecond-underscore
: Code Gen Optionsfshort-enums
: Fortran 2003 statusfshort-enums
: Code Gen Optionsfsign-zero
: Runtime Optionsfstack-arrays
: Code Gen Optionsfsyntax-only
: Error and Warning Optionsftest-forall-temp
: Fortran Dialect Optionsfworking-directory
: Preprocessing OptionsH
: Preprocessing OptionsI
dir: Directory Optionsidirafter
dir: Preprocessing Optionsimultilib
dir: Preprocessing Optionsiprefix
prefix: Preprocessing Optionsiquote
dir: Preprocessing Optionsisysroot
dir: Preprocessing Optionsisystem
dir: Preprocessing OptionsJ
dir: Directory OptionsM
dir: Directory Optionsnostdinc
: Preprocessing OptionsP
: Preprocessing Optionspedantic
: Error and Warning Optionspedantic-errors
: Error and Warning Optionsstatic-libgfortran
: Link Optionsstd=
std option
: Fortran Dialect Optionstail-call-workaround
: Code Gen OptionsU
name: Preprocessing Optionsundef
: Preprocessing OptionsWaliasing
: Error and Warning OptionsWalign-commons
: Error and Warning OptionsWall
: Error and Warning OptionsWampersand
: Error and Warning OptionsWarray-temporaries
: Error and Warning OptionsWc-binding-type
: Error and Warning OptionsWcharacter-truncation
: Error and Warning OptionsWcompare-reals
: Error and Warning OptionsWconversion
: Error and Warning OptionsWconversion-extra
: Error and Warning OptionsWdo-subscript
: Error and Warning OptionsWerror
: Error and Warning OptionsWextra
: Error and Warning OptionsWfrontend-loop-interchange
: Error and Warning OptionsWfunction-elimination
: Error and Warning OptionsWimplicit-interface
: Error and Warning OptionsWimplicit-procedure
: Error and Warning OptionsWinteger-division
: Error and Warning OptionsWintrinsic-shadow
: Error and Warning OptionsWintrinsics-std
: Error and Warning OptionsWline-truncation
: Error and Warning OptionsWoverwrite-recursive
: Error and Warning OptionsWpedantic
: Error and Warning OptionsWreal-q-constant
: Error and Warning OptionsWrealloc-lhs
: Error and Warning OptionsWrealloc-lhs-all
: Error and Warning OptionsWsurprising
: Error and Warning OptionsWtabs
: Error and Warning OptionsWtargt-lifetime
: Error and Warning OptionsWundefined-do-loop
: Error and Warning OptionsWunderflow
: Error and Warning OptionsWunused-dummy-argument
: Error and Warning OptionsWunused-parameter
: Error and Warning OptionsWuse-without-only
: Error and Warning OptionsWzerotrip
: Error and Warning Options