gcc/fortran/lang.opt

   1 ; Options for the Fortran 95 front end.
   2 ; Copyright (C) 2003-2013 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 Warning
 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 Warning
 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 Warning
 230 ; Documented in C
 231
 232 Wconversion-extra
 233 Fortran 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 Warning
 258 Warn on intrinsics not part of the selected standard
 259
 260 Wreal-q-constant
 261 Fortran Warning
 262 Warn about real-literal-constants with 'q' exponent-letter
 263
 264 Wrealloc-lhs
 265 Fortran Warning
 266 Warn when a left-hand-side array variable is reallocated
 267
 268 Wrealloc-lhs-all
 269 Fortran Warning
 270 Warn when a left-hand-side variable is reallocated
 271
 272 Wtarget-lifetime
 273 Fortran Warning
 274 Warn if the pointer in a pointer assignment might outlive its target
 275
 276 Wreturn-type
 277 Fortran Warning
 278 ; Documented in C
 279
 280 Wsurprising
 281 Fortran Warning
 282 Warn about \"suspicious\" constructs
 283
 284 Wtabs
 285 Fortran Warning
 286 Permit nonconforming uses of the tab character
 287
 288 Wunderflow
 289 Fortran Warning
 290 Warn about underflow of numerical constant expressions
 291
 292 Wintrinsic-shadow
 293 Fortran Warning
 294 Warn if a user-procedure has the same name as an intrinsic
 295
 296 Wunused-dummy-argument
 297 Fortran Warning
 298 Warn about unused dummy arguments.
 299
 300 Wzerotrip
 301 Fortran Warning
 302 Warn about zero-trip DO loops
 303
 304 cpp
 305 Fortran Negative(nocpp)
 306 Enable preprocessing
 307
 308 cpp=
 309 Fortran Joined Negative(nocpp) Undocumented NoDWARFRecord
 310 ; Internal option generated by specs from -cpp.
 311
 312 nocpp
 313 Fortran Negative(cpp)
 314 Disable preprocessing
 315
 316 d
 317 Fortran Joined
 318 ; Documented in common.opt
 319
 320 faggressive-function-elimination
 321 Fortran
 322 Eliminate multiple function invokations also for impure functions
 323
 324 falign-commons
 325 Fortran
 326 Enable alignment of COMMON blocks
 327
 328 fall-intrinsics
 329 Fortran RejectNegative
 330 All intrinsics procedures are available regardless of selected standard
 331
 332 fallow-leading-underscore
 333 Fortran Undocumented
 334 ; For internal use only: allow the first character of symbol names to be an underscore
 335
 336 fautomatic
 337 Fortran
 338 Do not treat local variables and COMMON blocks as if they were named in SAVE statements
 339
 340 fbackslash
 341 Fortran
 342 Specify that backslash in string introduces an escape character
 343
 344 fbacktrace
 345 Fortran
 346 Produce a backtrace when a runtime error is encountered
 347
 348 fblas-matmul-limit=
 349 Fortran RejectNegative Joined UInteger
 350 -fblas-matmul-limit=<n> Size of the smallest matrix for which matmul will use BLAS
 351
 352 fcheck-array-temporaries
 353 Fortran
 354 Produce a warning at runtime if a array temporary has been created for a procedure argument
 355
 356 fconvert=big-endian
 357 Fortran RejectNegative
 358 Use big-endian format for unformatted files
 359
 360 fconvert=little-endian
 361 Fortran RejectNegative
 362 Use little-endian format for unformatted files
 363
 364 fconvert=native
 365 Fortran RejectNegative
 366 Use native format for unformatted files
 367
 368 fconvert=swap
 369 Fortran RejectNegative
 370 Swap endianness for unformatted files
 371
 372 fcray-pointer
 373 Fortran
 374 Use the Cray Pointer extension
 375
 376 fd-lines-as-code
 377 Fortran RejectNegative
 378 Ignore 'D' in column one in fixed form
 379
 380 fd-lines-as-comments
 381 Fortran RejectNegative
 382 Treat lines with 'D' in column one as comments
 383
 384 fdefault-double-8
 385 Fortran
 386 Set the default double precision kind to an 8 byte wide type
 387
 388 fdefault-integer-8
 389 Fortran
 390 Set the default integer kind to an 8 byte wide type
 391
 392 fdefault-real-8
 393 Fortran
 394 Set the default real kind to an 8 byte wide type
 395
 396 fdollar-ok
 397 Fortran
 398 Allow dollar signs in entity names
 399
 400 fdump-core
 401 Fortran Ignore
 402 Does nothing. Preserved for backward compatibility.
 403
 404 fdump-fortran-original
 405 Fortran
 406 Display the code tree after parsing
 407
 408 fdump-fortran-optimized
 409 Fortran
 410 Display the code tree after front end optimization
 411
 412 fdump-parse-tree
 413 Fortran
 414 Display the code tree after parsing; deprecated option
 415
 416 fexternal-blas
 417 Fortran
 418 Specify that an external BLAS library should be used for matmul calls on large-size arrays
 419
 420 ff2c
 421 Fortran
 422 Use f2c calling convention
 423
 424 ffixed-form
 425 Fortran RejectNegative
 426 Assume that the source file is fixed form
 427
 428 finteger-4-integer-8
 429 Fortran RejectNegative
 430 Interpret any INTEGER(4) as an INTEGER(8)
 431
 432 fintrinsic-modules-path
 433 Fortran RejectNegative Separate
 434 Specify where to find the compiled intrinsic modules
 435
 436 fintrinsic-modules-path=
 437 Fortran RejectNegative Joined
 438 Specify where to find the compiled intrinsic modules
 439
 440 ffixed-line-length-none
 441 Fortran RejectNegative
 442 Allow arbitrary character line width in fixed mode
 443
 444 ffixed-line-length-
 445 Fortran RejectNegative Joined UInteger
 446 -ffixed-line-length-<n> Use n as character line width in fixed mode
 447
 448 ffpe-trap=
 449 Fortran RejectNegative JoinedOrMissing
 450 -ffpe-trap=[...]        Stop on following floating point exceptions
 451
 452 ffpe-summary=
 453 Fortran RejectNegative JoinedOrMissing
 454 -ffpe-summary=[...]     Print summary of floating point exceptions
 455
 456 ffree-form
 457 Fortran RejectNegative
 458 Assume that the source file is free form
 459
 460 ffree-line-length-none
 461 Fortran RejectNegative
 462 Allow arbitrary character line width in free mode
 463
 464 ffree-line-length-
 465 Fortran RejectNegative Joined UInteger
 466 -ffree-line-length-<n>  Use n as character line width in free mode
 467
 468 ffrontend-optimize
 469 Fortran
 470 Enable front end optimization
 471
 472 fimplicit-none
 473 Fortran
 474 Specify that no implicit typing is allowed, unless overridden by explicit IMPLICIT statements
 475
 476 finit-character=
 477 Fortran RejectNegative Joined UInteger
 478 -finit-character=<n>    Initialize local character variables to ASCII value n
 479
 480 finit-integer=
 481 Fortran RejectNegative Joined
 482 -finit-integer=<n>      Initialize local integer variables to n
 483
 484 finit-local-zero
 485 Fortran
 486 Initialize local variables to zero (from g77)
 487
 488 finit-logical=
 489 Fortran RejectNegative Joined
 490 -finit-logical=<true|false>     Initialize local logical variables
 491
 492 finit-real=
 493 Fortran RejectNegative Joined
 494 -finit-real=<zero|nan|inf|-inf> Initialize local real variables
 495
 496 fmax-array-constructor=
 497 Fortran RejectNegative Joined UInteger
 498 -fmax-array-constructor=<n>     Maximum number of objects in an array constructor
 499
 500 fmax-identifier-length=
 501 Fortran RejectNegative Joined UInteger
 502 -fmax-identifier-length=<n>     Maximum identifier length
 503
 504 fmax-subrecord-length=
 505 Fortran RejectNegative Joined UInteger
 506 -fmax-subrecord-length=<n>      Maximum length for subrecords
 507
 508 fmax-stack-var-size=
 509 Fortran RejectNegative Joined UInteger
 510 -fmax-stack-var-size=<n>        Size in bytes of the largest array that will be put on the stack
 511
 512 fstack-arrays
 513 Fortran
 514 Put all local arrays on stack.
 515
 516 fmodule-private
 517 Fortran
 518 Set default accessibility of module entities to PRIVATE.
 519
 520 fopenmp
 521 Fortran
 522 ; Documented in C
 523
 524 fopenmp-simd
 525 Fortran
 526 ; Documented in C
 527
 528 fpack-derived
 529 Fortran
 530 Try to lay out derived types as compactly as possible
 531
 532 fpreprocessed
 533 Fortran
 534 ; Documented in C
 535
 536 fprotect-parens
 537 Fortran
 538 Protect parentheses in expressions
 539
 540 frange-check
 541 Fortran
 542 Enable range checking during compilation
 543
 544 freal-4-real-8
 545 Fortran RejectNegative
 546 Interpret any REAL(4) as a REAL(8)
 547
 548 freal-4-real-10
 549 Fortran RejectNegative
 550 Interpret any REAL(4) as a REAL(10)
 551
 552 freal-4-real-16
 553 Fortran RejectNegative
 554 Interpret any REAL(4) as a REAL(16)
 555
 556 freal-8-real-4
 557 Fortran RejectNegative
 558 Interpret any REAL(8) as a REAL(4)
 559
 560 freal-8-real-10
 561 Fortran RejectNegative
 562 Interpret any REAL(8) as a REAL(10)
 563
 564 freal-8-real-16
 565 Fortran RejectNegative
 566 Interpret any REAL(8) as a REAL(16)
 567
 568 frealloc-lhs
 569 Fortran
 570 Reallocate the LHS in assignments
 571
 572 frecord-marker=4
 573 Fortran RejectNegative
 574 Use a 4-byte record marker for unformatted files
 575
 576 frecord-marker=8
 577 Fortran RejectNegative
 578 Use an 8-byte record marker for unformatted files
 579
 580 frecursive
 581 Fortran
 582 Allocate local variables on the stack to allow indirect recursion
 583
 584 frepack-arrays
 585 Fortran
 586 Copy array sections into a contiguous block on procedure entry
 587
 588 fcoarray=
 589 Fortran RejectNegative JoinedOrMissing
 590 -fcoarray=[...] Specify which coarray parallelization should be used
 591
 592 fcheck=
 593 Fortran RejectNegative JoinedOrMissing
 594 -fcheck=[...]   Specify which runtime checks are to be performed
 595
 596 fsecond-underscore
 597 Fortran
 598 Append a second underscore if the name already contains an underscore
 599
 600 fshort-enums
 601 Fortran Var(flag_short_enums)
 602 ; Documented in C
 603
 604 fsign-zero
 605 Fortran
 606 Apply negative sign to zero values
 607
 608 funderscoring
 609 Fortran
 610 Append underscores to externally visible names
 611
 612 fwhole-file
 613 Fortran Ignore
 614 Does nothing.  Preserved for backward compatibility.
 615
 616 fworking-directory
 617 Fortran
 618 ; Documented in C
 619
 620 idirafter
 621 Fortran Joined Separate
 622 ; Documented in C
 623
 624 imultilib
 625 Fortran Joined Separate
 626 ; Documented in C
 627
 628 iprefix
 629 Fortran Joined Separate
 630 ; Documented in C
 631
 632 iquote
 633 Fortran Joined Separate
 634 ; Documented in C
 635
 636 isysroot
 637 Fortran Joined Separate
 638 ; Documented in C
 639
 640 isystem
 641 Fortran Joined Separate
 642 ; Documented in C
 643
 644 nostdinc
 645 Fortran
 646 ; Documented in C
 647
 648 o
 649 Fortran Joined Separate
 650 ; Documented in common.opt
 651
 652 static-libgfortran
 653 Fortran
 654 Statically link the GNU Fortran helper library (libgfortran)
 655
 656 std=f2003
 657 Fortran
 658 Conform to the ISO Fortran 2003 standard
 659
 660 std=f2008
 661 Fortran
 662 Conform to the ISO Fortran 2008 standard
 663
 664 std=f2008ts
 665 Fortran
 666 Conform to the ISO Fortran 2008 standard including TS 29113
 667
 668 std=f95
 669 Fortran
 670 Conform to the ISO Fortran 95 standard
 671
 672 std=gnu
 673 Fortran
 674 Conform to nothing in particular
 675
 676 std=legacy
 677 Fortran
 678 Accept extensions to support legacy code
 679
 680 undef
 681 Fortran
 682 ; Documented in C
 683
 684 v
 685 Fortran
 686 ; Documented in C
 687
 688 ; This comment is to ensure we retain the blank line above.