gcc/fortran/lang.opt

   1 ; Options for the Fortran 95 front end.
   2 ; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   3 ; Free Software Foundation, Inc.
   4 ;
   5 ; This file is part of GCC.
   6 ;
   7 ; GCC is free software; you can redistribute it and/or modify it under
   8 ; the terms of the GNU General Public License as published by the Free
   9 ; Software Foundation; either version 3, or (at your option) any later
  10 ; version.
  11 ;
  12 ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 ; WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 ; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 ; for more details.
  16 ;
  17 ; You should have received a copy of the GNU General Public License
  18 ; along with GCC; see the file COPYING3.  If not see
  19 ; <http://www.gnu.org/licenses/>.
  20
  21 ; See the GCC internals manual for a description of this file's format.
  22
  23 ; Please try to keep this file in ASCII collating order.
  24
  25 Language
  26 Fortran
  27
  28 -all-warnings
  29 Fortran Alias(Wall)
  30
  31 -assert
  32 Fortran Separate Alias(A)
  33
  34 -assert=
  35 Fortran Joined Alias(A)
  36
  37 -comments
  38 Fortran Alias(C)
  39
  40 -comments-in-macros
  41 Fortran Alias(CC)
  42
  43 -define-macro
  44 Fortran Separate Alias(D)
  45
  46 -define-macro=
  47 Fortran Joined Alias(D)
  48
  49 -dependencies
  50 Fortran Alias(M)
  51
  52 -dump
  53 Fortran Separate Alias(d)
  54
  55 -dump=
  56 Fortran Joined Alias(d)
  57
  58 -include-barrier
  59 Fortran Alias(I, -)
  60
  61 -include-directory
  62 Fortran Separate Alias(I)
  63
  64 -include-directory=
  65 Fortran Joined Alias(I)
  66
  67 -include-directory-after
  68 Fortran Separate Alias(idirafter)
  69
  70 -include-directory-after=
  71 Fortran Joined Alias(idirafter)
  72
  73 -include-prefix
  74 Fortran Separate Alias(iprefix)
  75
  76 -include-prefix=
  77 Fortran JoinedOrMissing Alias(iprefix)
  78
  79 -no-line-commands
  80 Fortran Alias(P)
  81
  82 -no-standard-includes
  83 Fortran Alias(nostdinc)
  84
  85 -output
  86 Fortran Separate Alias(o)
  87
  88 -output=
  89 Fortran Joined Alias(o)
  90
  91 -preprocess
  92 Fortran Undocumented Alias(E)
  93
  94 -print-missing-file-dependencies
  95 Fortran Alias(MG)
  96
  97 -trace-includes
  98 Fortran Alias(H)
  99
 100 -undefine-macro
 101 Fortran Separate Alias(U)
 102
 103 -undefine-macro=
 104 Fortran Joined Alias(U)
 105
 106 -user-dependencies
 107 Fortran Alias(MM)
 108
 109 -verbose
 110 Fortran Alias(v)
 111
 112 -write-dependencies
 113 Fortran NoDriverArg Separate Alias(MD)
 114
 115 -write-user-dependencies
 116 Fortran NoDriverArg Separate Alias(MMD)
 117
 118 A
 119 Fortran Joined Separate
 120 ; Documented in C
 121
 122 C
 123 Fortran
 124 ; Documented in C
 125
 126 CC
 127 Fortran
 128 ; Documented in C
 129
 130 D
 131 Fortran Joined Separate
 132 ; Documented in C
 133
 134 E
 135 Fortran Undocumented
 136
 137 H
 138 Fortran
 139 ; Documented in C
 140
 141 I
 142 Fortran Joined Separate
 143 ; Documented in C
 144
 145 J
 146 Fortran Joined Separate
 147 -J<directory>   Put MODULE files in 'directory'
 148
 149 M
 150 Fortran
 151 ; Documented in C
 152
 153 MD
 154 Fortran Separate NoDriverArg
 155 ; Documented in C
 156
 157 MF
 158 Fortran Joined Separate
 159 ; Documented in C
 160
 161 MG
 162 Fortran
 163 ; Documented in C
 164
 165 MM
 166 Fortran
 167 ; Documented in C
 168
 169 MMD
 170 Fortran Separate NoDriverArg
 171 ; Documented in C
 172
 173 MP
 174 Fortran
 175 ; Documented in C
 176
 177 MT
 178 Fortran Joined Separate
 179 ; Documented in C
 180
 181 MQ
 182 Fortran Joined Separate
 183 ; Documented in C
 184
 185 P
 186 Fortran
 187 ; Documented in C
 188
 189 U
 190 Fortran Joined Separate
 191 ; Documented in C
 192
 193 Wall
 194 Fortran
 195 ; Documented in C
 196
 197 Waliasing
 198 Fortran Warning
 199 Warn about possible aliasing of dummy arguments
 200
 201 Walign-commons
 202 Fortran Warning
 203 Warn about alignment of COMMON blocks
 204
 205 Wampersand
 206 Fortran Warning
 207 Warn about missing ampersand in continued character constants
 208
 209 Warray-temporaries
 210 Fortran Warning
 211 Warn about creation of array temporaries
 212
 213 Wc-binding-type
 214 Fortran Warning
 215 Warn if the type of a variable might be not interoperable with C
 216
 217 Wcharacter-truncation
 218 Fortran Warning
 219 Warn about truncated character expressions
 220
 221 Wcompare-reals
 222 Fortran Warning
 223 Warn about equality comparisons involving REAL or COMPLEX expressions
 224
 225 Wconversion
 226 Fortran Warning
 227 ; Documented in C
 228
 229 Wconversion-extra
 230 Fortran Warning
 231 Warn about most implicit conversions
 232
 233 Wextra
 234 Fortran Warning
 235 Print extra (possibly unwanted) warnings
 236
 237 Wfunction-elimination
 238 Fortran Warning
 239 Warn about function call elimination
 240
 241 Wimplicit-interface
 242 Fortran Warning
 243 Warn about calls with implicit interface
 244
 245 Wimplicit-procedure
 246 Fortran Warning
 247 Warn about called procedures not explicitly declared
 248
 249 Wline-truncation
 250 Fortran Warning
 251 Warn about truncated source lines
 252
 253 Wintrinsics-std
 254 Fortran Warning
 255 Warn on intrinsics not part of the selected standard
 256
 257 Wreal-q-constant
 258 Fortran Warning
 259 Warn about real-literal-constants with 'q' exponent-letter
 260
 261 Wrealloc-lhs
 262 Fortran Warning
 263 Warn when a left-hand-side array variable is reallocated
 264
 265 Wrealloc-lhs-all
 266 Fortran Warning
 267 Warn when a left-hand-side variable is reallocated
 268
 269 Wtarget-lifetime
 270 Fortran Warning
 271 Warn if the pointer in a pointer assignment might outlive its target
 272
 273 Wreturn-type
 274 Fortran Warning
 275 ; Documented in C
 276
 277 Wsurprising
 278 Fortran Warning
 279 Warn about \"suspicious\" constructs
 280
 281 Wtabs
 282 Fortran Warning
 283 Permit nonconforming uses of the tab character
 284
 285 Wunderflow
 286 Fortran Warning
 287 Warn about underflow of numerical constant expressions
 288
 289 Wintrinsic-shadow
 290 Fortran Warning
 291 Warn if a user-procedure has the same name as an intrinsic
 292
 293 Wunused-dummy-argument
 294 Fortran Warning
 295 Warn about unused dummy arguments.
 296
 297 cpp
 298 Fortran Negative(nocpp)
 299 Enable preprocessing
 300
 301 cpp=
 302 Fortran Joined Negative(nocpp) Undocumented NoDWARFRecord
 303 ; Internal option generated by specs from -cpp.
 304
 305 nocpp
 306 Fortran Negative(cpp)
 307 Disable preprocessing
 308
 309 d
 310 Fortran Joined
 311 ; Documented in common.opt
 312
 313 faggressive-function-elimination
 314 Fortran
 315 Eliminate multiple function invokations also for impure functions
 316
 317 falign-commons
 318 Fortran
 319 Enable alignment of COMMON blocks
 320
 321 fall-intrinsics
 322 Fortran RejectNegative
 323 All intrinsics procedures are available regardless of selected standard
 324
 325 fallow-leading-underscore
 326 Fortran Undocumented
 327 ; For internal use only: allow the first character of symbol names to be an underscore
 328
 329 fautomatic
 330 Fortran
 331 Do not treat local variables and COMMON blocks as if they were named in SAVE statements
 332
 333 fbackslash
 334 Fortran
 335 Specify that backslash in string introduces an escape character
 336
 337 fbacktrace
 338 Fortran
 339 Produce a backtrace when a runtime error is encountered
 340
 341 fblas-matmul-limit=
 342 Fortran RejectNegative Joined UInteger
 343 -fblas-matmul-limit=<n> Size of the smallest matrix for which matmul will use BLAS
 344
 345 fcheck-array-temporaries
 346 Fortran
 347 Produce a warning at runtime if a array temporary has been created for a procedure argument
 348
 349 fconvert=big-endian
 350 Fortran RejectNegative
 351 Use big-endian format for unformatted files
 352
 353 fconvert=little-endian
 354 Fortran RejectNegative
 355 Use little-endian format for unformatted files
 356
 357 fconvert=native
 358 Fortran RejectNegative
 359 Use native format for unformatted files
 360
 361 fconvert=swap
 362 Fortran RejectNegative
 363 Swap endianness for unformatted files
 364
 365 fcray-pointer
 366 Fortran
 367 Use the Cray Pointer extension
 368
 369 fd-lines-as-code
 370 Fortran RejectNegative
 371 Ignore 'D' in column one in fixed form
 372
 373 fd-lines-as-comments
 374 Fortran RejectNegative
 375 Treat lines with 'D' in column one as comments
 376
 377 fdefault-double-8
 378 Fortran
 379 Set the default double precision kind to an 8 byte wide type
 380
 381 fdefault-integer-8
 382 Fortran
 383 Set the default integer kind to an 8 byte wide type
 384
 385 fdefault-real-8
 386 Fortran
 387 Set the default real kind to an 8 byte wide type
 388
 389 fdollar-ok
 390 Fortran
 391 Allow dollar signs in entity names
 392
 393 fdump-core
 394 Fortran Ignore
 395 Does nothing. Preserved for backward compatibility.
 396
 397 fdump-fortran-original
 398 Fortran
 399 Display the code tree after parsing
 400
 401 fdump-fortran-optimized
 402 Fortran
 403 Display the code tree after front end optimization
 404
 405 fdump-parse-tree
 406 Fortran
 407 Display the code tree after parsing; deprecated option
 408
 409 fexternal-blas
 410 Fortran
 411 Specify that an external BLAS library should be used for matmul calls on large-size arrays
 412
 413 ff2c
 414 Fortran
 415 Use f2c calling convention
 416
 417 ffixed-form
 418 Fortran RejectNegative
 419 Assume that the source file is fixed form
 420
 421 finteger-4-integer-8
 422 Fortran RejectNegative
 423 Interpret any INTEGER(4) as an INTEGER(8)
 424
 425 fintrinsic-modules-path
 426 Fortran RejectNegative Joined Separate
 427 Specify where to find the compiled intrinsic modules
 428
 429 ffixed-line-length-none
 430 Fortran RejectNegative
 431 Allow arbitrary character line width in fixed mode
 432
 433 ffixed-line-length-
 434 Fortran RejectNegative Joined UInteger
 435 -ffixed-line-length-<n> Use n as character line width in fixed mode
 436
 437 ffpe-trap=
 438 Fortran RejectNegative JoinedOrMissing
 439 -ffpe-trap=[...]        Stop on following floating point exceptions
 440
 441 ffree-form
 442 Fortran RejectNegative
 443 Assume that the source file is free form
 444
 445 ffree-line-length-none
 446 Fortran RejectNegative
 447 Allow arbitrary character line width in free mode
 448
 449 ffree-line-length-
 450 Fortran RejectNegative Joined UInteger
 451 -ffree-line-length-<n>  Use n as character line width in free mode
 452
 453 ffrontend-optimize
 454 Fortran
 455 Enable front end optimization
 456
 457 fimplicit-none
 458 Fortran
 459 Specify that no implicit typing is allowed, unless overridden by explicit IMPLICIT statements
 460
 461 finit-character=
 462 Fortran RejectNegative Joined UInteger
 463 -finit-character=<n>    Initialize local character variables to ASCII value n
 464
 465 finit-integer=
 466 Fortran RejectNegative Joined
 467 -finit-integer=<n>      Initialize local integer variables to n
 468
 469 finit-local-zero
 470 Fortran
 471 Initialize local variables to zero (from g77)
 472
 473 finit-logical=
 474 Fortran RejectNegative Joined
 475 -finit-logical=<true|false>     Initialize local logical variables
 476
 477 finit-real=
 478 Fortran RejectNegative Joined
 479 -finit-real=<zero|nan|inf|-inf> Initialize local real variables
 480
 481 fmax-array-constructor=
 482 Fortran RejectNegative Joined UInteger
 483 -fmax-array-constructor=<n>     Maximum number of objects in an array constructor
 484
 485 fmax-identifier-length=
 486 Fortran RejectNegative Joined UInteger
 487 -fmax-identifier-length=<n>     Maximum identifier length
 488
 489 fmax-subrecord-length=
 490 Fortran RejectNegative Joined UInteger
 491 -fmax-subrecord-length=<n>      Maximum length for subrecords
 492
 493 fmax-stack-var-size=
 494 Fortran RejectNegative Joined UInteger
 495 -fmax-stack-var-size=<n>        Size in bytes of the largest array that will be put on the stack
 496
 497 fstack-arrays
 498 Fortran
 499 Put all local arrays on stack.
 500
 501 fmodule-private
 502 Fortran
 503 Set default accessibility of module entities to PRIVATE.
 504
 505 fopenmp
 506 Fortran
 507 ; Documented in C
 508
 509 fpack-derived
 510 Fortran
 511 Try to lay out derived types as compactly as possible
 512
 513 fpreprocessed
 514 Fortran
 515 ; Documented in C
 516
 517 fprotect-parens
 518 Fortran
 519 Protect parentheses in expressions
 520
 521 frange-check
 522 Fortran
 523 Enable range checking during compilation
 524
 525 freal-4-real-8
 526 Fortran RejectNegative
 527 Interpret any REAL(4) as a REAL(8)
 528
 529 freal-4-real-10
 530 Fortran RejectNegative
 531 Interpret any REAL(4) as a REAL(10)
 532
 533 freal-4-real-16
 534 Fortran RejectNegative
 535 Interpret any REAL(4) as a REAL(16)
 536
 537 freal-8-real-4
 538 Fortran RejectNegative
 539 Interpret any REAL(8) as a REAL(4)
 540
 541 freal-8-real-10
 542 Fortran RejectNegative
 543 Interpret any REAL(8) as a REAL(10)
 544
 545 freal-8-real-16
 546 Fortran RejectNegative
 547 Interpret any REAL(8) as a REAL(16)
 548
 549 frealloc-lhs
 550 Fortran
 551 Reallocate the LHS in assignments
 552
 553 frecord-marker=4
 554 Fortran RejectNegative
 555 Use a 4-byte record marker for unformatted files
 556
 557 frecord-marker=8
 558 Fortran RejectNegative
 559 Use an 8-byte record marker for unformatted files
 560
 561 frecursive
 562 Fortran
 563 Allocate local variables on the stack to allow indirect recursion
 564
 565 frepack-arrays
 566 Fortran
 567 Copy array sections into a contiguous block on procedure entry
 568
 569 fcoarray=
 570 Fortran RejectNegative JoinedOrMissing
 571 -fcoarray=[...] Specify which coarray parallelization should be used
 572
 573 fcheck=
 574 Fortran RejectNegative JoinedOrMissing
 575 -fcheck=[...]   Specify which runtime checks are to be performed
 576
 577 fsecond-underscore
 578 Fortran
 579 Append a second underscore if the name already contains an underscore
 580
 581 fshort-enums
 582 Fortran Var(flag_short_enums)
 583 ; Documented in C
 584
 585 fsign-zero
 586 Fortran
 587 Apply negative sign to zero values
 588
 589 funderscoring
 590 Fortran
 591 Append underscores to externally visible names
 592
 593 fwhole-file
 594 Fortran
 595 Compile all program units at once and check all interfaces
 596
 597 fworking-directory
 598 Fortran
 599 ; Documented in C
 600
 601 idirafter
 602 Fortran Joined Separate
 603 ; Documented in C
 604
 605 imultilib
 606 Fortran Joined Separate
 607 ; Documented in C
 608
 609 iprefix
 610 Fortran Joined Separate
 611 ; Documented in C
 612
 613 iquote
 614 Fortran Joined Separate
 615 ; Documented in C
 616
 617 isysroot
 618 Fortran Joined Separate
 619 ; Documented in C
 620
 621 isystem
 622 Fortran Joined Separate
 623 ; Documented in C
 624
 625 nostdinc
 626 Fortran
 627 ; Documented in C
 628
 629 o
 630 Fortran Joined Separate
 631 ; Documented in common.opt
 632
 633 static-libgfortran
 634 Fortran
 635 Statically link the GNU Fortran helper library (libgfortran)
 636
 637 std=f2003
 638 Fortran
 639 Conform to the ISO Fortran 2003 standard
 640
 641 std=f2008
 642 Fortran
 643 Conform to the ISO Fortran 2008 standard
 644
 645 std=f2008ts
 646 Fortran
 647 Conform to the ISO Fortran 2008 standard including TS 29113
 648
 649 std=f95
 650 Fortran
 651 Conform to the ISO Fortran 95 standard
 652
 653 std=gnu
 654 Fortran
 655 Conform to nothing in particular
 656
 657 std=legacy
 658 Fortran
 659 Accept extensions to support legacy code
 660
 661 undef
 662 Fortran
 663 ; Documented in C
 664
 665 v
 666 Fortran
 667 ; Documented in C
 668
 669 ; This comment is to ensure we retain the blank line above.