1 ; Options for the Fortran 95 front end.
2 ; Copyright (C) 2003-2014 Free Software Foundation, Inc.
4 ; This file is part of GCC.
6 ; GCC is free software; you can redistribute it and/or modify it under
7 ; the terms of the GNU General Public License as published by the Free
8 ; Software Foundation; either version 3, or (at your option) any later
11 ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 ; WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 ; You should have received a copy of the GNU General Public License
17 ; along with GCC; see the file COPYING3. If not see
18 ; <http://www.gnu.org/licenses/>.
20 ; See the GCC internals manual for a description of this file's format.
22 ; Please try to keep this file in ASCII collating order.
31 Fortran Separate Alias(A)
34 Fortran Joined Alias(A)
43 Fortran Separate Alias(D)
46 Fortran Joined Alias(D)
52 Fortran Separate Alias(d)
55 Fortran Joined Alias(d)
61 Fortran Separate Alias(I)
64 Fortran Joined Alias(I)
66 -include-directory-after
67 Fortran Separate Alias(idirafter)
69 -include-directory-after=
70 Fortran Joined Alias(idirafter)
73 Fortran Separate Alias(iprefix)
76 Fortran JoinedOrMissing Alias(iprefix)
82 Fortran Alias(nostdinc)
85 Fortran Separate Alias(o)
88 Fortran Joined Alias(o)
91 Fortran Undocumented Alias(E)
93 -print-missing-file-dependencies
100 Fortran Separate Alias(U)
103 Fortran Joined Alias(U)
112 Fortran NoDriverArg Separate Alias(MD)
114 -write-user-dependencies
115 Fortran NoDriverArg Separate Alias(MMD)
118 Fortran Joined Separate
130 Fortran Joined Separate
141 Fortran Joined Separate
145 Fortran Joined Separate
146 -J<directory> Put MODULE files in 'directory'
153 Fortran Separate NoDriverArg
157 Fortran Joined Separate
169 Fortran Separate NoDriverArg
177 Fortran Joined Separate
181 Fortran Joined Separate
189 Fortran Joined Separate
197 Fortran Warning Var(warn_aliasing) LangEnabledBy(Fortran,Wall)
198 Warn about possible aliasing of dummy arguments
201 Fortran Warning Var(warn_align_commons) Init(1)
202 Warn about alignment of COMMON blocks
205 Fortran Warning Var(warn_ampersand) LangEnabledBy(Fortran,Wall || Wpedantic)
206 Warn about missing ampersand in continued character constants
209 Fortran Warning Var(warn_array_temporaries)
210 Warn about creation of array temporaries
213 Fortran Var(warn_c_binding_type) Warning LangEnabledBy(Fortran,Wall)
214 Warn if the type of a variable might be not interoperable with C
220 Wcharacter-truncation
221 Fortran Var(warn_character_truncation) Warning LangEnabledBy(Fortran,Wall)
222 Warn about truncated character expressions
225 Fortran Warning Var(warn_compare_reals) LangEnabledBy(Fortran,Wextra)
226 Warn about equality comparisons involving REAL or COMPLEX expressions
229 Fortran Var(warn_conversion) Warning LangEnabledBy(Fortran,Wall)
233 Fortran Var(warn_conversion_extra) Warning
234 Warn about most implicit conversions
238 ; Documented in common
240 Wfunction-elimination
241 Fortran Warning Var(warn_function_elimination)
242 Warn about function call elimination
245 Fortran Warning Var(warn_implicit_interface)
246 Warn about calls with implicit interface
249 Fortran Warning Var(warn_implicit_procedure)
250 Warn about called procedures not explicitly declared
253 Fortran Warning Var(warn_line_truncation) LangEnabledBy(Fortran,Wall)
254 Warn about truncated source lines
257 Fortran Var(warn_intrinsics_std) Warning LangEnabledBy(Fortran,Wall)
258 Warn on intrinsics not part of the selected standard
261 Fortran LangEnabledBy(Fortran,Wall)
262 ; Documented in common.opt
264 Wmissing-include-dirs
266 ; Documented in C/C++
269 Fortran Var(warn_use_without_only) Warning
270 Warn about USE statements that have no ONLY qualifier
278 ; Documented in common.opt
281 Fortran Warning Var(warn_real_q_constant) LangEnabledBy(Fortran,Wall)
282 Warn about real-literal-constants with 'q' exponent-letter
285 Fortran Warning Var(warn_realloc_lhs) LangEnabledBy(Fortran,Wrealloc-lhs-all)
286 Warn when a left-hand-side array variable is reallocated
289 Fortran Warning Var(warn_realloc_lhs_all)
290 Warn when a left-hand-side variable is reallocated
293 Fortran Warning Var(warn_target_lifetime) LangEnabledBy(Fortran,Wall)
294 Warn if the pointer in a pointer assignment might outlive its target
297 Fortran Warning LangEnabledBy(Fortran,Wall)
301 Fortran Warning Var(warn_surprising) LangEnabledBy(Fortran,Wall)
302 Warn about \"suspicious\" constructs
305 Fortran Warning Var(warn_tabs) LangEnabledBy(Fortran,Wall || Wpedantic)
306 Permit nonconforming uses of the tab character
309 Fortran Warning Var(warn_underflow) Init(1)
310 Warn about underflow of numerical constant expressions
313 Fortran LangEnabledBy(Fortran,Wall)
314 ; Documented in common.opt
317 Fortran Warning Var(warn_intrinsic_shadow) LangEnabledBy(Fortran,Wall)
318 Warn if a user-procedure has the same name as an intrinsic
321 LangEnabledBy(Fortran,Wall)
322 ; Documented in common.opt
324 Wunused-dummy-argument
325 Fortran Warning Var(warn_unused_dummy_argument) LangEnabledBy(Fortran,Wall)
326 Warn about unused dummy arguments.
329 Fortran Warning Var(warn_zerotrip) LangEnabledBy(Fortran,Wall)
330 Warn about zero-trip DO loops
333 Fortran Negative(nocpp)
337 Fortran Joined Negative(nocpp) Undocumented NoDWARFRecord
338 ; Internal option generated by specs from -cpp.
341 Fortran Negative(cpp)
342 Disable preprocessing
346 ; Documented in common.opt
348 faggressive-function-elimination
350 Eliminate multiple function invokations also for impure functions
354 Enable alignment of COMMON blocks
357 Fortran RejectNegative
358 All intrinsics procedures are available regardless of selected standard
360 fallow-leading-underscore
362 ; For internal use only: allow the first character of symbol names to be an underscore
366 Do not treat local variables and COMMON blocks as if they were named in SAVE statements
370 Specify that backslash in string introduces an escape character
374 Produce a backtrace when a runtime error is encountered
377 Fortran RejectNegative Joined UInteger
378 -fblas-matmul-limit=<n> Size of the smallest matrix for which matmul will use BLAS
380 fcheck-array-temporaries
382 Produce a warning at runtime if a array temporary has been created for a procedure argument
385 Fortran RejectNegative
386 Use big-endian format for unformatted files
388 fconvert=little-endian
389 Fortran RejectNegative
390 Use little-endian format for unformatted files
393 Fortran RejectNegative
394 Use native format for unformatted files
397 Fortran RejectNegative
398 Swap endianness for unformatted files
402 Use the Cray Pointer extension
405 Fortran RejectNegative
406 Ignore 'D' in column one in fixed form
409 Fortran RejectNegative
410 Treat lines with 'D' in column one as comments
414 Set the default double precision kind to an 8 byte wide type
418 Set the default integer kind to an 8 byte wide type
422 Set the default real kind to an 8 byte wide type
426 Allow dollar signs in entity names
430 Does nothing. Preserved for backward compatibility.
432 fdump-fortran-original
434 Display the code tree after parsing
436 fdump-fortran-optimized
438 Display the code tree after front end optimization
442 Display the code tree after parsing; deprecated option
446 Specify that an external BLAS library should be used for matmul calls on large-size arrays
450 Use f2c calling convention
453 Fortran RejectNegative
454 Assume that the source file is fixed form
457 Fortran RejectNegative
458 Interpret any INTEGER(4) as an INTEGER(8)
460 fintrinsic-modules-path
461 Fortran RejectNegative Separate
462 Specify where to find the compiled intrinsic modules
464 fintrinsic-modules-path=
465 Fortran RejectNegative Joined
466 Specify where to find the compiled intrinsic modules
468 ffixed-line-length-none
469 Fortran RejectNegative
470 Allow arbitrary character line width in fixed mode
473 Fortran RejectNegative Joined UInteger
474 -ffixed-line-length-<n> Use n as character line width in fixed mode
477 Fortran RejectNegative JoinedOrMissing
478 -ffpe-trap=[...] Stop on following floating point exceptions
481 Fortran RejectNegative JoinedOrMissing
482 -ffpe-summary=[...] Print summary of floating point exceptions
485 Fortran RejectNegative
486 Assume that the source file is free form
488 ffree-line-length-none
489 Fortran RejectNegative
490 Allow arbitrary character line width in free mode
493 Fortran RejectNegative Joined UInteger
494 -ffree-line-length-<n> Use n as character line width in free mode
498 Enable front end optimization
502 Specify that no implicit typing is allowed, unless overridden by explicit IMPLICIT statements
505 Fortran RejectNegative Joined UInteger
506 -finit-character=<n> Initialize local character variables to ASCII value n
509 Fortran RejectNegative Joined
510 -finit-integer=<n> Initialize local integer variables to n
514 Initialize local variables to zero (from g77)
517 Fortran RejectNegative Joined
518 -finit-logical=<true|false> Initialize local logical variables
521 Fortran RejectNegative Joined
522 -finit-real=<zero|nan|inf|-inf> Initialize local real variables
524 fmax-array-constructor=
525 Fortran RejectNegative Joined UInteger
526 -fmax-array-constructor=<n> Maximum number of objects in an array constructor
528 fmax-identifier-length=
529 Fortran RejectNegative Joined UInteger
530 -fmax-identifier-length=<n> Maximum identifier length
532 fmax-subrecord-length=
533 Fortran RejectNegative Joined UInteger
534 -fmax-subrecord-length=<n> Maximum length for subrecords
537 Fortran RejectNegative Joined UInteger
538 -fmax-stack-var-size=<n> Size in bytes of the largest array that will be put on the stack
542 Put all local arrays on stack.
546 Set default accessibility of module entities to PRIVATE.
558 Try to lay out derived types as compactly as possible
566 Protect parentheses in expressions
570 Enable range checking during compilation
573 Fortran RejectNegative
574 Interpret any REAL(4) as a REAL(8)
577 Fortran RejectNegative
578 Interpret any REAL(4) as a REAL(10)
581 Fortran RejectNegative
582 Interpret any REAL(4) as a REAL(16)
585 Fortran RejectNegative
586 Interpret any REAL(8) as a REAL(4)
589 Fortran RejectNegative
590 Interpret any REAL(8) as a REAL(10)
593 Fortran RejectNegative
594 Interpret any REAL(8) as a REAL(16)
598 Reallocate the LHS in assignments
601 Fortran RejectNegative
602 Use a 4-byte record marker for unformatted files
605 Fortran RejectNegative
606 Use an 8-byte record marker for unformatted files
610 Allocate local variables on the stack to allow indirect recursion
614 Copy array sections into a contiguous block on procedure entry
617 Fortran RejectNegative JoinedOrMissing
618 -fcoarray=[...] Specify which coarray parallelization should be used
621 Fortran RejectNegative JoinedOrMissing
622 -fcheck=[...] Specify which runtime checks are to be performed
626 Append a second underscore if the name already contains an underscore
629 Fortran Var(flag_short_enums)
634 Apply negative sign to zero values
638 Append underscores to externally visible names
642 Does nothing. Preserved for backward compatibility.
649 Fortran Joined Separate
653 Fortran Joined Separate
657 Fortran Joined Separate
661 Fortran Joined Separate
665 Fortran Joined Separate
669 Fortran Joined Separate
677 Fortran Joined Separate
678 ; Documented in common.opt
682 Statically link the GNU Fortran helper library (libgfortran)
686 Conform to the ISO Fortran 2003 standard
690 Conform to the ISO Fortran 2008 standard
694 Conform to the ISO Fortran 2008 standard including TS 29113
698 Conform to the ISO Fortran 95 standard
702 Conform to nothing in particular
706 Accept extensions to support legacy code
716 ; This comment is to ensure we retain the blank line above.