-; Options for the Fortran 95 front end.
-; Copyright (C) 2003-2016 Free Software Foundation, Inc.
+; Options for the Fortran front end.
+; Copyright (C) 2003-2021 Free Software Foundation, Inc.
;
; This file is part of GCC.
;
Fortran Warning Var(warn_array_temporaries)
Warn about creation of array temporaries.
+Wargument-mismatch
+Fortran WarnRemoved
+Does nothing. Preserved for backward compatibility.
+
Wc-binding-type
Fortran Var(warn_c_binding_type) Warning LangEnabledBy(Fortran,Wall)
Warn if the type of a variable might be not interoperable with C.
Fortran Var(warn_conversion_extra) Warning
Warn about most implicit conversions.
+Wdo-subscript
+Fortran Var(warn_do_subscript) Warning LangEnabledBy(Fortran,Wextra)
+Warn about possibly incorrect subscripts in do loops.
+
Wextra
Fortran Warning
; Documented in common
+Wfrontend-loop-interchange
+Fortran Var(flag_warn_frontend_loop_interchange)
+Warn if loops have been interchanged.
+
Wfunction-elimination
-Fortran Warning Var(warn_function_elimination)
+Fortran Warning Var(warn_function_elimination) LangEnabledBy(Fortran,Wextra)
Warn about function call elimination.
Wimplicit-interface
Fortran
; Documented in C
+Woverwrite-recursive
+Fortran Warning Var(warn_overwrite_recursive) Init(1)
+Warn that -fno-automatic may break recursion.
+
Wpedantic
Fortran
; Documented in common.opt
Fortran Warning Var(warn_tabs) LangEnabledBy(Fortran,Wall || Wpedantic)
Permit nonconforming uses of the tab character.
+Wundefined-do-loop
+Fortran Warning Var(warn_undefined_do_loop) LangEnabledBy(Fortran,Wall)
+Warn about an invalid DO loop.
+
Wunderflow
Fortran Warning Var(warn_underflow) Init(1)
Warn about underflow of numerical constant expressions.
Fortran Joined
; Documented in common.opt
+fallow-argument-mismatch
+Fortran Var(flag_allow_argument_mismatch) LangEnabledBy(Fortran,std=legacy)
+Accept argument mismatches in procedure calls.
+
faggressive-function-elimination
Fortran Var(flag_aggressive_function_elimination)
-Eliminate multiple function invokations also for impure functions.
+Eliminate multiple function invocations also for impure functions.
falign-commons
Fortran Var(flag_align_commons) Init(1)
Fortran RejectNegative Var(flag_all_intrinsics)
All intrinsics procedures are available regardless of selected standard.
+fallow-invalid-boz
+Fortran RejectNegative Var(flag_allow_invalid_boz)
+Allow a BOZ literal constant to appear in an invalid context and with X instead of Z.
+
fallow-leading-underscore
Fortran Undocumented Var(flag_allow_leading_underscore)
; For internal use only: allow the first character of symbol names to be an underscore
fconvert=
Fortran RejectNegative Joined Enum(gfc_convert) Var(flag_convert) Init(GFC_FLAG_CONVERT_NATIVE)
--fconvert=<big-endian|little-endian|native|swap> The endianness used for unformatted files.
+-fconvert=<big-endian|little-endian|native|swap> The endianness used for unformatted files.
Enum
-Name(gfc_convert) Type(enum gfc_convert) UnknownError(Unrecognized option to endianess value: %qs)
+Name(gfc_convert) Type(enum gfc_convert) UnknownError(Unrecognized option to endianness value: %qs)
EnumValue
Enum(gfc_convert) String(big-endian) Value(GFC_FLAG_CONVERT_BIG)
Fortran Var(flag_cray_pointer)
Use the Cray Pointer extension.
+fc-prototypes
+Fortran Var(flag_c_prototypes)
+Generate C prototypes from BIND(C) declarations.
+
+fc-prototypes-external
+Fortran Var(flag_c_prototypes_external)
+Generate C prototypes from non-BIND(C) external procedure definitions.
+
fd-lines-as-code
Fortran RejectNegative
Ignore 'D' in column one in fixed form.
Fortran RejectNegative
Treat lines with 'D' in column one as comments.
+fdebug-aux-vars
+Fortran Var(flag_debug_aux_vars)
+Issue debug information for compiler-generated auxiliary variables.
+
fdec
-Fortran
+Fortran Var(flag_dec)
Enable all DEC language extensions.
+fdec-blank-format-item
+Fortran Var(flag_dec_blank_format_item)
+Enable the use of blank format items in format strings.
+
+fdec-char-conversions
+Fortran Var(flag_dec_char_conversions)
+Enable the use of character literals in assignments and data statements
+for non-character variables.
+
+fdec-include
+Fortran Var(flag_dec_include)
+Enable legacy parsing of INCLUDE as statement.
+
+fdec-format-defaults
+Fortran Var(flag_dec_format_defaults)
+Enable default widths for i, f and g format specifiers.
+
+fdec-intrinsic-ints
+Fortran Var(flag_dec_intrinsic_ints)
+Enable kind-specific variants of integer intrinsic functions.
+
+fdec-math
+Fortran Var(flag_dec_math)
+Enable legacy math intrinsics for compatibility.
+
fdec-structure
-Fortran
+Fortran Var(flag_dec_structure)
Enable support for DEC STRUCTURE/RECORD.
+fdec-static
+Fortran Var(flag_dec_static)
+Enable DEC-style STATIC and AUTOMATIC attributes.
+
fdefault-double-8
Fortran Var(flag_default_double)
Set the default double precision kind to an 8 byte wide type.
Set the default integer kind to an 8 byte wide type.
fdefault-real-8
-Fortran Var(flag_default_real)
+Fortran Var(flag_default_real_8)
Set the default real kind to an 8 byte wide type.
+fdefault-real-10
+Fortran Var(flag_default_real_10)
+Set the default real kind to an 10 byte wide type.
+
+fdefault-real-16
+Fortran Var(flag_default_real_16)
+Set the default real kind to an 16 byte wide type.
+
fdollar-ok
Fortran Var(flag_dollar_ok)
Allow dollar signs in entity names.
Fortran Var(flag_dump_fortran_optimized)
Display the code tree after front end optimization.
+fdump-fortran-global
+Fortran Var(flag_dump_fortran_global)
+Display the global symbol table after parsing.
+
fdump-parse-tree
Fortran Alias(fdump-fortran-original)
Display the code tree after parsing; deprecated option.
Fortran RejectNegative
Assume that the source file is fixed form.
+ftest-forall-temp
+Fortran Var(flag_test_forall_temp) Init(0)
+Force creation of temporary to test infrequently-executed forall code.
+
finteger-4-integer-8
Fortran RejectNegative Var(flag_integer4_kind,8)
Interpret any INTEGER(4) as an INTEGER(8).
Fortran RejectNegative Joined UInteger Var(flag_fixed_line_length) Init(72)
-ffixed-line-length-<n> Use n as character line width in fixed mode.
+fpad-source
+Fortran Var(flag_pad_source) Init(1)
+Pad shorter fixed form lines to line width with spaces.
+
ffpe-trap=
Fortran RejectNegative JoinedOrMissing
-ffpe-trap=[...] Stop on following floating point exceptions.
Fortran RejectNegative Joined UInteger Var(flag_free_line_length) Init(132)
-ffree-line-length-<n> Use n as character line width in free mode.
+ffrontend-loop-interchange
+Fortran Var(flag_frontend_loop_interchange) Init(-1)
+Try to interchange loops if profitable.
+
ffrontend-optimize
Fortran Var(flag_frontend_optimize) Init(-1)
Enable front end optimization.
Fortran RejectNegative Joined UInteger
-finit-character=<n> Initialize local character variables to ASCII value n.
+finit-derived
+Fortran Var(flag_init_derived)
+Initialize components of derived type variables according to other init flags.
+
finit-integer=
Fortran RejectNegative Joined
-finit-integer=<n> Initialize local integer variables to n.
EnumValue
Enum(gfc_init_local_real) String(-inf) Value(GFC_INIT_REAL_NEG_INF)
+finline-arg-packing
+Fortran Var(flag_inline_arg_packing) Init(-1)
+-finline-arg-packing Perform argument packing inline.
+
finline-matmul-limit=
Fortran RejectNegative Joined UInteger Var(flag_inline_matmul_limit) Init(-1)
-finline-matmul-limit=<n> Specify the size of the largest matrix for which matmul will be inlined.
Fortran LTO Joined Var(flag_openacc_dims)
; Documented in C
+fopenacc-kernels=
+Fortran RejectNegative Joined Enum(openacc_kernels) Var(flag_openacc_kernels) Init(OPENACC_KERNELS_PARLOOPS)
+; Documented in C
+
fopenmp
Fortran LTO
; Documented in C
Fortran Var(flag_protect_parens) Init(-1)
Protect parentheses in expressions.
+fpre-include=
+Fortran RejectNegative Joined Var(flag_pre_include) Undocumented
+Path to header file that should be pre-included before each compilation unit.
+
frange-check
Fortran Var(flag_range_check) Init(1)
Enable range checking during compilation.
Fortran Var(flag_sign_zero) Init(1)
Apply negative sign to zero values.
+ftail-call-workaround
+Fortran Alias(ftail-call-workaround=,1,0)
+
+ftail-call-workaround=
+Fortran RejectNegative Joined UInteger IntegerRange(0, 2) Var(flag_tail_call_workaround) Init(1)
+Disallow tail call optimization when a calling routine may have omitted character lengths.
+
funderscoring
Fortran Var(flag_underscoring) Init(1)
Append underscores to externally visible names.
Fortran
Conform to the ISO Fortran 2008 standard including TS 29113.
+std=f2018
+Fortran
+Conform to the ISO Fortran 2018 standard.
+
std=f95
Fortran
Conform to the ISO Fortran 95 standard.
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