gcc/fortran/lang.opt

   1 ; Options for the Fortran 95 front end.
   2 ; Copyright (C) 2003-2014 Free Software Foundation, Inc.
   3 ;
   4 ; This file is part of GCC.
   5 ;
   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
   9 ; version.
  10 ;
  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
  14 ; for more details.
  15 ;
  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/>.
  19
  20 ; See the GCC internals manual for a description of this file's format.
  21
  22 ; Please try to keep this file in ASCII collating order.
  23
  24 Language
  25 Fortran
  26
  27 -all-warnings
  28 Fortran Alias(Wall)
  29
  30 -assert
  31 Fortran Separate Alias(A)
  32
  33 -assert=
  34 Fortran Joined Alias(A)
  35
  36 -comments
  37 Fortran Alias(C)
  38
  39 -comments-in-macros
  40 Fortran Alias(CC)
  41
  42 -define-macro
  43 Fortran Separate Alias(D)
  44
  45 -define-macro=
  46 Fortran Joined Alias(D)
  47
  48 -dependencies
  49 Fortran Alias(M)
  50
  51 -dump
  52 Fortran Separate Alias(d)
  53
  54 -dump=
  55 Fortran Joined Alias(d)
  56
  57 -include-barrier
  58 Fortran Alias(I, -)
  59
  60 -include-directory
  61 Fortran Separate Alias(I)
  62
  63 -include-directory=
  64 Fortran Joined Alias(I)
  65
  66 -include-directory-after
  67 Fortran Separate Alias(idirafter)
  68
  69 -include-directory-after=
  70 Fortran Joined Alias(idirafter)
  71
  72 -include-prefix
  73 Fortran Separate Alias(iprefix)
  74
  75 -include-prefix=
  76 Fortran JoinedOrMissing Alias(iprefix)
  77
  78 -no-line-commands
  79 Fortran Alias(P)
  80
  81 -no-standard-includes
  82 Fortran Alias(nostdinc)
  83
  84 -output
  85 Fortran Separate Alias(o)
  86
  87 -output=
  88 Fortran Joined Alias(o)
  89
  90 -preprocess
  91 Fortran Undocumented Alias(E)
  92
  93 -print-missing-file-dependencies
  94 Fortran Alias(MG)
  95
  96 -trace-includes
  97 Fortran Alias(H)
  98
  99 -undefine-macro
 100 Fortran Separate Alias(U)
 101
 102 -undefine-macro=
 103 Fortran Joined Alias(U)
 104
 105 -user-dependencies
 106 Fortran Alias(MM)
 107
 108 -verbose
 109 Fortran Alias(v)
 110
 111 -write-dependencies
 112 Fortran NoDriverArg Separate Alias(MD)
 113
 114 -write-user-dependencies
 115 Fortran NoDriverArg Separate Alias(MMD)
 116
 117 A
 118 Fortran Joined Separate
 119 ; Documented in C
 120
 121 C
 122 Fortran
 123 ; Documented in C
 124
 125 CC
 126 Fortran
 127 ; Documented in C
 128
 129 D
 130 Fortran Joined Separate
 131 ; Documented in C
 132
 133 E
 134 Fortran Undocumented
 135
 136 H
 137 Fortran
 138 ; Documented in C
 139
 140 I
 141 Fortran Joined Separate
 142 ; Documented in C
 143
 144 J
 145 Fortran Joined Separate
 146 -J<directory>   Put MODULE files in 'directory'
 147
 148 M
 149 Fortran
 150 ; Documented in C
 151
 152 MD
 153 Fortran Separate NoDriverArg
 154 ; Documented in C
 155
 156 MF
 157 Fortran Joined Separate
 158 ; Documented in C
 159
 160 MG
 161 Fortran
 162 ; Documented in C
 163
 164 MM
 165 Fortran
 166 ; Documented in C
 167
 168 MMD
 169 Fortran Separate NoDriverArg
 170 ; Documented in C
 171
 172 MP
 173 Fortran
 174 ; Documented in C
 175
 176 MT
 177 Fortran Joined Separate
 178 ; Documented in C
 179
 180 MQ
 181 Fortran Joined Separate
 182 ; Documented in C
 183
 184 P
 185 Fortran
 186 ; Documented in C
 187
 188 U
 189 Fortran Joined Separate
 190 ; Documented in C
 191
 192 Wall
 193 Fortran
 194 ; Documented in C
 195
 196 Waliasing
 197 Fortran Warning
 198 Warn about possible aliasing of dummy arguments
 199
 200 Walign-commons
 201 Fortran Warning
 202 Warn about alignment of COMMON blocks
 203
 204 Wampersand
 205 Fortran Warning
 206 Warn about missing ampersand in continued character constants
 207
 208 Warray-temporaries
 209 Fortran Warning
 210 Warn about creation of array temporaries
 211
 212 Wc-binding-type
 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
 215
 216 Wdate-time
 217 Fortran
 218 ; Documented in C
 219
 220 Wcharacter-truncation
 221 Fortran Var(warn_character_truncation) Warning LangEnabledBy(Fortran,Wall)
 222 Warn about truncated character expressions
 223
 224 Wcompare-reals
 225 Fortran Warning
 226 Warn about equality comparisons involving REAL or COMPLEX expressions
 227
 228 Wconversion
 229 Fortran Var(warn_conversion) Warning LangEnabledBy(Fortran,Wall)
 230 ; Documented in C
 231
 232 Wconversion-extra
 233 Fortran Var(warn_conversion_extra) Warning
 234 Warn about most implicit conversions
 235
 236 Wextra
 237 Fortran Warning
 238 Print extra (possibly unwanted) warnings
 239
 240 Wfunction-elimination
 241 Fortran Warning
 242 Warn about function call elimination
 243
 244 Wimplicit-interface
 245 Fortran Warning
 246 Warn about calls with implicit interface
 247
 248 Wimplicit-procedure
 249 Fortran Warning
 250 Warn about called procedures not explicitly declared
 251
 252 Wline-truncation
 253 Fortran Warning
 254 Warn about truncated source lines
 255
 256 Wintrinsics-std
 257 Fortran Var(warn_intrinsics_std) Warning LangEnabledBy(Fortran,Wall)
 258 Warn on intrinsics not part of the selected standard
 259
 260 Wmissing-include-dirs
 261 Fortran
 262 ; Documented in C/C++
 263
 264 Wuse-without-only
 265 Fortran Var(warn_use_without_only) Warning
 266 Warn about USE statements that have no ONLY qualifier
 267
 268 Wopenmp-simd
 269 Fortran
 270 ; Documented in C
 271
 272 Wpedantic
 273 Fortran
 274 ; Documented in common.opt
 275
 276 Wreal-q-constant
 277 Fortran Warning
 278 Warn about real-literal-constants with 'q' exponent-letter
 279
 280 Wrealloc-lhs
 281 Fortran Warning
 282 Warn when a left-hand-side array variable is reallocated
 283
 284 Wrealloc-lhs-all
 285 Fortran Warning
 286 Warn when a left-hand-side variable is reallocated
 287
 288 Wtarget-lifetime
 289 Fortran Warning
 290 Warn if the pointer in a pointer assignment might outlive its target
 291
 292 Wreturn-type
 293 Fortran Warning
 294 ; Documented in C
 295
 296 Wsurprising
 297 Fortran Warning
 298 Warn about \"suspicious\" constructs
 299
 300 Wtabs
 301 Fortran Warning Var(warn_tabs) LangEnabledBy(Fortran,Wall || Wpedantic)
 302 Permit nonconforming uses of the tab character
 303
 304 Wunderflow
 305 Fortran Warning
 306 Warn about underflow of numerical constant expressions
 307
 308 Wintrinsic-shadow
 309 Fortran Warning
 310 Warn if a user-procedure has the same name as an intrinsic
 311
 312 Wunused-dummy-argument
 313 Fortran Warning
 314 Warn about unused dummy arguments.
 315
 316 Wzerotrip
 317 Fortran Warning
 318 Warn about zero-trip DO loops
 319
 320 cpp
 321 Fortran Negative(nocpp)
 322 Enable preprocessing
 323
 324 cpp=
 325 Fortran Joined Negative(nocpp) Undocumented NoDWARFRecord
 326 ; Internal option generated by specs from -cpp.
 327
 328 nocpp
 329 Fortran Negative(cpp)
 330 Disable preprocessing
 331
 332 d
 333 Fortran Joined
 334 ; Documented in common.opt
 335
 336 faggressive-function-elimination
 337 Fortran
 338 Eliminate multiple function invokations also for impure functions
 339
 340 falign-commons
 341 Fortran
 342 Enable alignment of COMMON blocks
 343
 344 fall-intrinsics
 345 Fortran RejectNegative
 346 All intrinsics procedures are available regardless of selected standard
 347
 348 fallow-leading-underscore
 349 Fortran Undocumented
 350 ; For internal use only: allow the first character of symbol names to be an underscore
 351
 352 fautomatic
 353 Fortran
 354 Do not treat local variables and COMMON blocks as if they were named in SAVE statements
 355
 356 fbackslash
 357 Fortran
 358 Specify that backslash in string introduces an escape character
 359
 360 fbacktrace
 361 Fortran
 362 Produce a backtrace when a runtime error is encountered
 363
 364 fblas-matmul-limit=
 365 Fortran RejectNegative Joined UInteger
 366 -fblas-matmul-limit=<n> Size of the smallest matrix for which matmul will use BLAS
 367
 368 fcheck-array-temporaries
 369 Fortran
 370 Produce a warning at runtime if a array temporary has been created for a procedure argument
 371
 372 fconvert=big-endian
 373 Fortran RejectNegative
 374 Use big-endian format for unformatted files
 375
 376 fconvert=little-endian
 377 Fortran RejectNegative
 378 Use little-endian format for unformatted files
 379
 380 fconvert=native
 381 Fortran RejectNegative
 382 Use native format for unformatted files
 383
 384 fconvert=swap
 385 Fortran RejectNegative
 386 Swap endianness for unformatted files
 387
 388 fcray-pointer
 389 Fortran
 390 Use the Cray Pointer extension
 391
 392 fd-lines-as-code
 393 Fortran RejectNegative
 394 Ignore 'D' in column one in fixed form
 395
 396 fd-lines-as-comments
 397 Fortran RejectNegative
 398 Treat lines with 'D' in column one as comments
 399
 400 fdefault-double-8
 401 Fortran
 402 Set the default double precision kind to an 8 byte wide type
 403
 404 fdefault-integer-8
 405 Fortran
 406 Set the default integer kind to an 8 byte wide type
 407
 408 fdefault-real-8
 409 Fortran
 410 Set the default real kind to an 8 byte wide type
 411
 412 fdollar-ok
 413 Fortran
 414 Allow dollar signs in entity names
 415
 416 fdump-core
 417 Fortran Ignore
 418 Does nothing. Preserved for backward compatibility.
 419
 420 fdump-fortran-original
 421 Fortran
 422 Display the code tree after parsing
 423
 424 fdump-fortran-optimized
 425 Fortran
 426 Display the code tree after front end optimization
 427
 428 fdump-parse-tree
 429 Fortran
 430 Display the code tree after parsing; deprecated option
 431
 432 fexternal-blas
 433 Fortran
 434 Specify that an external BLAS library should be used for matmul calls on large-size arrays
 435
 436 ff2c
 437 Fortran
 438 Use f2c calling convention
 439
 440 ffixed-form
 441 Fortran RejectNegative
 442 Assume that the source file is fixed form
 443
 444 finteger-4-integer-8
 445 Fortran RejectNegative
 446 Interpret any INTEGER(4) as an INTEGER(8)
 447
 448 fintrinsic-modules-path
 449 Fortran RejectNegative Separate
 450 Specify where to find the compiled intrinsic modules
 451
 452 fintrinsic-modules-path=
 453 Fortran RejectNegative Joined
 454 Specify where to find the compiled intrinsic modules
 455
 456 ffixed-line-length-none
 457 Fortran RejectNegative
 458 Allow arbitrary character line width in fixed mode
 459
 460 ffixed-line-length-
 461 Fortran RejectNegative Joined UInteger
 462 -ffixed-line-length-<n> Use n as character line width in fixed mode
 463
 464 ffpe-trap=
 465 Fortran RejectNegative JoinedOrMissing
 466 -ffpe-trap=[...]        Stop on following floating point exceptions
 467
 468 ffpe-summary=
 469 Fortran RejectNegative JoinedOrMissing
 470 -ffpe-summary=[...]     Print summary of floating point exceptions
 471
 472 ffree-form
 473 Fortran RejectNegative
 474 Assume that the source file is free form
 475
 476 ffree-line-length-none
 477 Fortran RejectNegative
 478 Allow arbitrary character line width in free mode
 479
 480 ffree-line-length-
 481 Fortran RejectNegative Joined UInteger
 482 -ffree-line-length-<n>  Use n as character line width in free mode
 483
 484 ffrontend-optimize
 485 Fortran
 486 Enable front end optimization
 487
 488 fimplicit-none
 489 Fortran
 490 Specify that no implicit typing is allowed, unless overridden by explicit IMPLICIT statements
 491
 492 finit-character=
 493 Fortran RejectNegative Joined UInteger
 494 -finit-character=<n>    Initialize local character variables to ASCII value n
 495
 496 finit-integer=
 497 Fortran RejectNegative Joined
 498 -finit-integer=<n>      Initialize local integer variables to n
 499
 500 finit-local-zero
 501 Fortran
 502 Initialize local variables to zero (from g77)
 503
 504 finit-logical=
 505 Fortran RejectNegative Joined
 506 -finit-logical=<true|false>     Initialize local logical variables
 507
 508 finit-real=
 509 Fortran RejectNegative Joined
 510 -finit-real=<zero|nan|inf|-inf> Initialize local real variables
 511
 512 fmax-array-constructor=
 513 Fortran RejectNegative Joined UInteger
 514 -fmax-array-constructor=<n>     Maximum number of objects in an array constructor
 515
 516 fmax-identifier-length=
 517 Fortran RejectNegative Joined UInteger
 518 -fmax-identifier-length=<n>     Maximum identifier length
 519
 520 fmax-subrecord-length=
 521 Fortran RejectNegative Joined UInteger
 522 -fmax-subrecord-length=<n>      Maximum length for subrecords
 523
 524 fmax-stack-var-size=
 525 Fortran RejectNegative Joined UInteger
 526 -fmax-stack-var-size=<n>        Size in bytes of the largest array that will be put on the stack
 527
 528 fstack-arrays
 529 Fortran
 530 Put all local arrays on stack.
 531
 532 fmodule-private
 533 Fortran
 534 Set default accessibility of module entities to PRIVATE.
 535
 536 fopenmp
 537 Fortran
 538 ; Documented in C
 539
 540 fopenmp-simd
 541 Fortran
 542 ; Documented in C
 543
 544 fpack-derived
 545 Fortran
 546 Try to lay out derived types as compactly as possible
 547
 548 fpreprocessed
 549 Fortran
 550 ; Documented in C
 551
 552 fprotect-parens
 553 Fortran
 554 Protect parentheses in expressions
 555
 556 frange-check
 557 Fortran
 558 Enable range checking during compilation
 559
 560 freal-4-real-8
 561 Fortran RejectNegative
 562 Interpret any REAL(4) as a REAL(8)
 563
 564 freal-4-real-10
 565 Fortran RejectNegative
 566 Interpret any REAL(4) as a REAL(10)
 567
 568 freal-4-real-16
 569 Fortran RejectNegative
 570 Interpret any REAL(4) as a REAL(16)
 571
 572 freal-8-real-4
 573 Fortran RejectNegative
 574 Interpret any REAL(8) as a REAL(4)
 575
 576 freal-8-real-10
 577 Fortran RejectNegative
 578 Interpret any REAL(8) as a REAL(10)
 579
 580 freal-8-real-16
 581 Fortran RejectNegative
 582 Interpret any REAL(8) as a REAL(16)
 583
 584 frealloc-lhs
 585 Fortran
 586 Reallocate the LHS in assignments
 587
 588 frecord-marker=4
 589 Fortran RejectNegative
 590 Use a 4-byte record marker for unformatted files
 591
 592 frecord-marker=8
 593 Fortran RejectNegative
 594 Use an 8-byte record marker for unformatted files
 595
 596 frecursive
 597 Fortran
 598 Allocate local variables on the stack to allow indirect recursion
 599
 600 frepack-arrays
 601 Fortran
 602 Copy array sections into a contiguous block on procedure entry
 603
 604 fcoarray=
 605 Fortran RejectNegative JoinedOrMissing
 606 -fcoarray=[...] Specify which coarray parallelization should be used
 607
 608 fcheck=
 609 Fortran RejectNegative JoinedOrMissing
 610 -fcheck=[...]   Specify which runtime checks are to be performed
 611
 612 fsecond-underscore
 613 Fortran
 614 Append a second underscore if the name already contains an underscore
 615
 616 fshort-enums
 617 Fortran Var(flag_short_enums)
 618 ; Documented in C
 619
 620 fsign-zero
 621 Fortran
 622 Apply negative sign to zero values
 623
 624 funderscoring
 625 Fortran
 626 Append underscores to externally visible names
 627
 628 fwhole-file
 629 Fortran Ignore
 630 Does nothing.  Preserved for backward compatibility.
 631
 632 fworking-directory
 633 Fortran
 634 ; Documented in C
 635
 636 idirafter
 637 Fortran Joined Separate
 638 ; Documented in C
 639
 640 imultilib
 641 Fortran Joined Separate
 642 ; Documented in C
 643
 644 iprefix
 645 Fortran Joined Separate
 646 ; Documented in C
 647
 648 iquote
 649 Fortran Joined Separate
 650 ; Documented in C
 651
 652 isysroot
 653 Fortran Joined Separate
 654 ; Documented in C
 655
 656 isystem
 657 Fortran Joined Separate
 658 ; Documented in C
 659
 660 nostdinc
 661 Fortran
 662 ; Documented in C
 663
 664 o
 665 Fortran Joined Separate
 666 ; Documented in common.opt
 667
 668 static-libgfortran
 669 Fortran
 670 Statically link the GNU Fortran helper library (libgfortran)
 671
 672 std=f2003
 673 Fortran
 674 Conform to the ISO Fortran 2003 standard
 675
 676 std=f2008
 677 Fortran
 678 Conform to the ISO Fortran 2008 standard
 679
 680 std=f2008ts
 681 Fortran
 682 Conform to the ISO Fortran 2008 standard including TS 29113
 683
 684 std=f95
 685 Fortran
 686 Conform to the ISO Fortran 95 standard
 687
 688 std=gnu
 689 Fortran
 690 Conform to nothing in particular
 691
 692 std=legacy
 693 Fortran
 694 Accept extensions to support legacy code
 695
 696 undef
 697 Fortran
 698 ; Documented in C
 699
 700 v
 701 Fortran
 702 ; Documented in C
 703
 704 ; This comment is to ensure we retain the blank line above.