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 Wconversion
 222 Fortran Warning
 223 ; Documented in C
 224
 225 Wconversion-extra
 226 Fortran Warning
 227 Warn about most implicit conversions
 228
 229 Wfunction-elimination
 230 Fortran Warning
 231 Warn about function call elimination
 232
 233 Wimplicit-interface
 234 Fortran Warning
 235 Warn about calls with implicit interface
 236
 237 Wimplicit-procedure
 238 Fortran Warning
 239 Warn about called procedures not explicitly declared
 240
 241 Wline-truncation
 242 Fortran Warning
 243 Warn about truncated source lines
 244
 245 Wintrinsics-std
 246 Fortran Warning
 247 Warn on intrinsics not part of the selected standard
 248
 249 Wreal-q-constant
 250 Fortran Warning
 251 Warn about real-literal-constants with 'q' exponent-letter
 252
 253 Wreturn-type
 254 Fortran Warning
 255 ; Documented in C
 256
 257 Wsurprising
 258 Fortran Warning
 259 Warn about \"suspicious\" constructs
 260
 261 Wtabs
 262 Fortran Warning
 263 Permit nonconforming uses of the tab character
 264
 265 Wunderflow
 266 Fortran Warning
 267 Warn about underflow of numerical constant expressions
 268
 269 Wintrinsic-shadow
 270 Fortran Warning
 271 Warn if a user-procedure has the same name as an intrinsic
 272
 273 Wunused-dummy-argument
 274 Fortran Warning
 275 Warn about unused dummy arguments.
 276
 277 cpp
 278 Fortran Negative(nocpp)
 279 Enable preprocessing
 280
 281 cpp=
 282 Fortran Joined Negative(nocpp) Undocumented
 283 ; Internal option generated by specs from -cpp.
 284
 285 nocpp
 286 Fortran Negative(cpp)
 287 Disable preprocessing
 288
 289 d
 290 Fortran Joined
 291 ; Documented in common.opt
 292
 293 faggressive-function-elimination
 294 Fortran
 295 Eliminate multiple function invokations also for impure functions
 296
 297 falign-commons
 298 Fortran
 299 Enable alignment of COMMON blocks
 300
 301 fall-intrinsics
 302 Fortran RejectNegative
 303 All intrinsics procedures are available regardless of selected standard
 304
 305 fallow-leading-underscore
 306 Fortran Undocumented
 307 ; For internal use only: allow the first character of symbol names to be an underscore
 308
 309 fautomatic
 310 Fortran
 311 Do not treat local variables and COMMON blocks as if they were named in SAVE statements
 312
 313 fbackslash
 314 Fortran
 315 Specify that backslash in string introduces an escape character
 316
 317 fbacktrace
 318 Fortran
 319 Produce a backtrace when a runtime error is encountered
 320
 321 fblas-matmul-limit=
 322 Fortran RejectNegative Joined UInteger
 323 -fblas-matmul-limit=<n> Size of the smallest matrix for which matmul will use BLAS
 324
 325 fcheck-array-temporaries
 326 Fortran
 327 Produce a warning at runtime if a array temporary has been created for a procedure argument
 328
 329 fconvert=big-endian
 330 Fortran RejectNegative
 331 Use big-endian format for unformatted files
 332
 333 fconvert=little-endian
 334 Fortran RejectNegative
 335 Use little-endian format for unformatted files
 336
 337 fconvert=native
 338 Fortran RejectNegative
 339 Use native format for unformatted files
 340
 341 fconvert=swap
 342 Fortran RejectNegative
 343 Swap endianness for unformatted files
 344
 345 fcray-pointer
 346 Fortran
 347 Use the Cray Pointer extension
 348
 349 fd-lines-as-code
 350 Fortran RejectNegative
 351 Ignore 'D' in column one in fixed form
 352
 353 fd-lines-as-comments
 354 Fortran RejectNegative
 355 Treat lines with 'D' in column one as comments
 356
 357 fdefault-double-8
 358 Fortran
 359 Set the default double precision kind to an 8 byte wide type
 360
 361 fdefault-integer-8
 362 Fortran
 363 Set the default integer kind to an 8 byte wide type
 364
 365 fdefault-real-8
 366 Fortran
 367 Set the default real kind to an 8 byte wide type
 368
 369 fdollar-ok
 370 Fortran
 371 Allow dollar signs in entity names
 372
 373 fdump-core
 374 Fortran Ignore
 375 Does nothing. Preserved for backward compatibility.
 376
 377 fdump-fortran-original
 378 Fortran
 379 Display the code tree after parsing
 380
 381 fdump-fortran-optimized
 382 Fortran
 383 Display the code tree after front end optimization
 384
 385 fdump-parse-tree
 386 Fortran
 387 Display the code tree after parsing; deprecated option
 388
 389 fexternal-blas
 390 Fortran
 391 Specify that an external BLAS library should be used for matmul calls on large-size arrays
 392
 393 ff2c
 394 Fortran
 395 Use f2c calling convention
 396
 397 ffixed-form
 398 Fortran RejectNegative
 399 Assume that the source file is fixed form
 400
 401 finteger-4-integer-8
 402 Fortran RejectNegative
 403 Interpret any INTEGER(4) as an INTEGER(8)
 404
 405 fintrinsic-modules-path
 406 Fortran RejectNegative Joined Separate
 407 Specify where to find the compiled intrinsic modules
 408
 409 ffixed-line-length-none
 410 Fortran RejectNegative
 411 Allow arbitrary character line width in fixed mode
 412
 413 ffixed-line-length-
 414 Fortran RejectNegative Joined UInteger
 415 -ffixed-line-length-<n> Use n as character line width in fixed mode
 416
 417 ffpe-trap=
 418 Fortran RejectNegative JoinedOrMissing
 419 -ffpe-trap=[...]        Stop on following floating point exceptions
 420
 421 ffree-form
 422 Fortran RejectNegative
 423 Assume that the source file is free form
 424
 425 ffree-line-length-none
 426 Fortran RejectNegative
 427 Allow arbitrary character line width in free mode
 428
 429 ffree-line-length-
 430 Fortran RejectNegative Joined UInteger
 431 -ffree-line-length-<n>  Use n as character line width in free mode
 432
 433 ffrontend-optimize
 434 Fortran
 435 Enable front end optimization
 436
 437 fimplicit-none
 438 Fortran
 439 Specify that no implicit typing is allowed, unless overridden by explicit IMPLICIT statements
 440
 441 finit-character=
 442 Fortran RejectNegative Joined UInteger
 443 -finit-character=<n>    Initialize local character variables to ASCII value n
 444
 445 finit-integer=
 446 Fortran RejectNegative Joined
 447 -finit-integer=<n>      Initialize local integer variables to n
 448
 449 finit-local-zero
 450 Fortran
 451 Initialize local variables to zero (from g77)
 452
 453 finit-logical=
 454 Fortran RejectNegative Joined
 455 -finit-logical=<true|false>     Initialize local logical variables
 456
 457 finit-real=
 458 Fortran RejectNegative Joined
 459 -finit-real=<zero|nan|inf|-inf> Initialize local real variables
 460
 461 fmax-array-constructor=
 462 Fortran RejectNegative Joined UInteger
 463 -fmax-array-constructor=<n>     Maximum number of objects in an array constructor
 464
 465 fmax-identifier-length=
 466 Fortran RejectNegative Joined UInteger
 467 -fmax-identifier-length=<n>     Maximum identifier length
 468
 469 fmax-subrecord-length=
 470 Fortran RejectNegative Joined UInteger
 471 -fmax-subrecord-length=<n>      Maximum length for subrecords
 472
 473 fmax-stack-var-size=
 474 Fortran RejectNegative Joined UInteger
 475 -fmax-stack-var-size=<n>        Size in bytes of the largest array that will be put on the stack
 476
 477 fstack-arrays
 478 Fortran
 479 Put all local arrays on stack.
 480
 481 fmodule-private
 482 Fortran
 483 Set default accessibility of module entities to PRIVATE.
 484
 485 fopenmp
 486 Fortran
 487 ; Documented in C
 488
 489 fpack-derived
 490 Fortran
 491 Try to lay out derived types as compactly as possible
 492
 493 fpreprocessed
 494 Fortran
 495 ; Documented in C
 496
 497 fprotect-parens
 498 Fortran
 499 Protect parentheses in expressions
 500
 501 frange-check
 502 Fortran
 503 Enable range checking during compilation
 504
 505 freal-4-real-8
 506 Fortran RejectNegative
 507 Interpret any REAL(4) as a REAL(8)
 508
 509 freal-4-real-10
 510 Fortran RejectNegative
 511 Interpret any REAL(4) as a REAL(10)
 512
 513 freal-4-real-16
 514 Fortran RejectNegative
 515 Interpret any REAL(4) as a REAL(16)
 516
 517 freal-8-real-4
 518 Fortran RejectNegative
 519 Interpret any REAL(8) as a REAL(4)
 520
 521 freal-8-real-10
 522 Fortran RejectNegative
 523 Interpret any REAL(8) as a REAL(10)
 524
 525 freal-8-real-16
 526 Fortran RejectNegative
 527 Interpret any REAL(8) as a REAL(16)
 528
 529 frealloc-lhs
 530 Fortran
 531 Reallocate the LHS in assignments
 532
 533 frecord-marker=4
 534 Fortran RejectNegative
 535 Use a 4-byte record marker for unformatted files
 536
 537 frecord-marker=8
 538 Fortran RejectNegative
 539 Use an 8-byte record marker for unformatted files
 540
 541 frecursive
 542 Fortran
 543 Allocate local variables on the stack to allow indirect recursion
 544
 545 frepack-arrays
 546 Fortran
 547 Copy array sections into a contiguous block on procedure entry
 548
 549 fcoarray=
 550 Fortran RejectNegative JoinedOrMissing
 551 -fcoarray=[...] Specify which coarray parallelization should be used
 552
 553 fcheck=
 554 Fortran RejectNegative JoinedOrMissing
 555 -fcheck=[...]   Specify which runtime checks are to be performed
 556
 557 fsecond-underscore
 558 Fortran
 559 Append a second underscore if the name already contains an underscore
 560
 561 fshort-enums
 562 Fortran Var(flag_short_enums)
 563 ; Documented in C
 564
 565 fsign-zero
 566 Fortran
 567 Apply negative sign to zero values
 568
 569 funderscoring
 570 Fortran
 571 Append underscores to externally visible names
 572
 573 fwhole-file
 574 Fortran
 575 Compile all program units at once and check all interfaces
 576
 577 fworking-directory
 578 Fortran
 579 ; Documented in C
 580
 581 idirafter
 582 Fortran Joined Separate
 583 ; Documented in C
 584
 585 imultilib
 586 Fortran Joined Separate
 587 ; Documented in C
 588
 589 iprefix
 590 Fortran Joined Separate
 591 ; Documented in C
 592
 593 iquote
 594 Fortran Joined Separate
 595 ; Documented in C
 596
 597 isysroot
 598 Fortran Joined Separate
 599 ; Documented in C
 600
 601 isystem
 602 Fortran Joined Separate
 603 ; Documented in C
 604
 605 nostdinc
 606 Fortran
 607 ; Documented in C
 608
 609 o
 610 Fortran Joined Separate
 611 ; Documented in common.opt
 612
 613 static-libgfortran
 614 Fortran
 615 Statically link the GNU Fortran helper library (libgfortran)
 616
 617 std=f2003
 618 Fortran
 619 Conform to the ISO Fortran 2003 standard
 620
 621 std=f2008
 622 Fortran
 623 Conform to the ISO Fortran 2008 standard
 624
 625 std=f2008ts
 626 Fortran
 627 Conform to the ISO Fortran 2008 standard including TS 29113
 628
 629 std=f95
 630 Fortran
 631 Conform to the ISO Fortran 95 standard
 632
 633 std=gnu
 634 Fortran
 635 Conform to nothing in particular
 636
 637 std=legacy
 638 Fortran
 639 Accept extensions to support legacy code
 640
 641 undef
 642 Fortran
 643 ; Documented in C
 644
 645 v
 646 Fortran
 647 ; Documented in C
 648
 649 ; This comment is to ensure we retain the blank line above.