ghc/docs/users_guide/flags.xml

   1 <?xml version="1.0" encoding="iso-8859-1"?>
   2   <sect1 id="flag-reference">
   3     <title>Flag reference</title>
   4
   5     <para>This section is a quick-reference for GHC's command-line
   6     flags.  For each flag, we also list its static/dynamic status (see
   7     <xref linkend="static-dynamic-flags"/>), and the flag's opposite
   8     (if available).</para>
   9
  10     <sect2>
  11       <title>Help and verbosity options (<xref linkend="options-help"/>)</title>
  12
  13       <informaltable>
  14         <tgroup cols="3" align="left" colsep="1" rowsep="1">
  15           <thead>
  16             <row>
  17               <entry>Flag</entry>
  18               <entry>Description</entry>
  19               <entry>Static/Dynamic</entry>
  20               <entry>Reverse</entry>
  21             </row>
  22           </thead>
  23           <tbody>
  24             <row>
  25               <entry><option>-?</option></entry>
  26               <entry>help</entry>
  27               <entry>static</entry>
  28               <entry>-</entry>
  29             </row>
  30             <row>
  31               <entry><option>-help</option></entry>
  32               <entry>help</entry>
  33               <entry>static</entry>
  34               <entry>-</entry>
  35             </row>
  36             <row>
  37               <entry><option>-v</option></entry>
  38               <entry>verbose mode (equivalent to <option>-v3</option>)</entry>
  39               <entry>dynamic</entry>
  40               <entry>-</entry>
  41             </row>
  42             <row>
  43               <entry><option>-v</option><replaceable>n</replaceable></entry>
  44               <entry>set verbosity level</entry>
  45               <entry>dynamic</entry>
  46               <entry>-</entry>
  47             </row>
  48             <row>
  49               <entry><option>-V</option></entry>
  50               <entry>display GHC version</entry>
  51               <entry>static</entry>
  52               <entry>-</entry>
  53             </row>
  54             <row>
  55               <entry><option>&ndash;&ndash;version</option></entry>
  56               <entry>display GHC version</entry>
  57               <entry>static</entry>
  58               <entry>-</entry>
  59             </row>
  60             <row>
  61               <entry><option>&ndash;&ndash;numeric-version</option></entry>
  62               <entry>display GHC version (numeric only)</entry>
  63               <entry>static</entry>
  64               <entry>-</entry>
  65             </row>
  66             <row>
  67               <entry><option>&ndash;&ndash;print-libdir</option></entry>
  68               <entry>display GHC library directory</entry>
  69               <entry>static</entry>
  70               <entry>-</entry>
  71             </row>
  72             <row>
  73               <entry><option>-ferror-spans</option></entry>
  74               <entry>output full span in error messages</entry>
  75               <entry>static</entry>
  76               <entry>-</entry>
  77             </row>
  78           </tbody>
  79         </tgroup>
  80       </informaltable>
  81
  82     </sect2>
  83     <sect2>
  84       <title>Which phases to run (<xref linkend="options-order"/>)</title>
  85
  86       <informaltable>
  87         <tgroup cols="3" align="left" colsep="1" rowsep="1">
  88           <thead>
  89             <row>
  90               <entry>Flag</entry>
  91               <entry>Description</entry>
  92               <entry>Static/Dynamic</entry>
  93               <entry>Reverse</entry>
  94             </row>
  95           </thead>
  96           <tbody>
  97             <row>
  98               <entry><option>-E</option></entry>
  99               <entry>Stop after preprocessing (<literal>.hspp</literal> file)</entry>
 100               <entry>static</entry>
 101               <entry>-</entry>
 102             </row>
 103             <row>
 104               <entry><option>-C</option></entry>
 105               <entry>Stop after generating C (<literal>.hc</literal> file)</entry>
 106               <entry>static</entry>
 107               <entry>-</entry>
 108             </row>
 109             <row>
 110               <entry><option>-S</option></entry>
 111               <entry>Stop after generating assembly (<literal>.s</literal> file)</entry>
 112               <entry>static</entry>
 113               <entry>-</entry>
 114             </row>
 115             <row>
 116               <entry><option>-c</option></entry>
 117               <entry>Stop after compiling to object code (<literal>.o</literal> file)</entry>
 118               <entry>static</entry>
 119               <entry>-</entry>
 120             </row>
 121           </tbody>
 122         </tgroup>
 123       </informaltable>
 124     </sect2>
 125
 126     <sect2>
 127       <title>Redirecting output (<xref linkend="options-output"/>)</title>
 128
 129       <informaltable>
 130         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 131           <thead>
 132             <row>
 133               <entry>Flag</entry>
 134               <entry>Description</entry>
 135               <entry>Static/Dynamic</entry>
 136               <entry>Reverse</entry>
 137             </row>
 138           </thead>
 139           <tbody>
 140             <row>
 141               <entry><option>-hcsuf</option> <replaceable>suffix</replaceable></entry>
 142               <entry>set the suffix to use for intermediate C files</entry>
 143               <entry>static</entry>
 144               <entry>-</entry>
 145             </row>
 146             <row>
 147               <entry><option>-hidir</option> <replaceable>dir</replaceable></entry>
 148               <entry>set directory for interface files</entry>
 149               <entry>static</entry>
 150               <entry>-</entry>
 151             </row>
 152             <row>
 153               <entry><option>-hisuf</option> <replaceable>suffix</replaceable></entry>
 154               <entry>set the suffix to use for interface files</entry>
 155               <entry>static</entry>
 156               <entry>-</entry>
 157             </row>
 158             <row>
 159               <entry><option>-o</option> <replaceable>filename</replaceable></entry>
 160               <entry>set output filename</entry>
 161               <entry>static</entry>
 162               <entry>-</entry>
 163             </row>
 164             <row>
 165               <entry><option>-odir</option> <replaceable>dir</replaceable></entry>
 166               <entry>set output directory</entry>
 167               <entry>static</entry>
 168               <entry>-</entry>
 169             </row>
 170             <row>
 171               <entry><option>-ohi</option> <replaceable>filename</replaceable></entry>
 172               <entry>set the filename in which to put the interface</entry>
 173               <entry>static</entry>
 174               <entry></entry>
 175             </row>
 176             <row>
 177               <entry><option>-osuf</option> <replaceable>suffix</replaceable></entry>
 178               <entry>set the output file suffix</entry>
 179               <entry>static</entry>
 180               <entry>-</entry>
 181             </row>
 182           </tbody>
 183         </tgroup>
 184       </informaltable>
 185     </sect2>
 186
 187     <sect2>
 188       <title>Keeping intermediate files (<xref linkend="keeping-intermediates"/>)</title>
 189
 190       <informaltable>
 191         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 192           <thead>
 193             <row>
 194               <entry>Flag</entry>
 195               <entry>Description</entry>
 196               <entry>Static/Dynamic</entry>
 197               <entry>Reverse</entry>
 198             </row>
 199           </thead>
 200           <tbody>
 201             <row>
 202               <entry><option>-keep-hc-file</option></entry>
 203               <entry>retain intermediate <literal>.hc</literal> files</entry>
 204               <entry>static</entry>
 205               <entry>-</entry>
 206             </row>
 207             <row>
 208               <entry><option>-keep-s-file</option></entry>
 209               <entry>retain intermediate <literal>.s</literal> files</entry>
 210               <entry>static</entry>
 211               <entry>-</entry>
 212             </row>
 213             <row>
 214               <entry><option>-keep-raw-s-file</option></entry>
 215               <entry>retain intermediate <literal>.raw_s</literal> files</entry>
 216               <entry>static</entry>
 217               <entry>-</entry>
 218             </row>
 219             <row>
 220               <entry><option>-keep-tmp-files</option></entry>
 221               <entry>retain all intermediate temporary files</entry>
 222               <entry>static</entry>
 223               <entry>-</entry>
 224             </row>
 225           </tbody>
 226         </tgroup>
 227       </informaltable>
 228     </sect2>
 229
 230     <sect2>
 231       <title>Temporary files (<xref linkend="temp-files"/>)</title>
 232
 233       <informaltable>
 234         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 235           <thead>
 236             <row>
 237               <entry>Flag</entry>
 238               <entry>Description</entry>
 239               <entry>Static/Dynamic</entry>
 240               <entry>Reverse</entry>
 241             </row>
 242           </thead>
 243           <tbody>
 244             <row>
 245               <entry><option>-tmpdir</option></entry>
 246               <entry>set the directory for temporary files</entry>
 247               <entry>static</entry>
 248               <entry>-</entry>
 249             </row>
 250           </tbody>
 251         </tgroup>
 252       </informaltable>
 253     </sect2>
 254
 255     <sect2>
 256       <title>Finding imports (<xref linkend="search-path"/>)</title>
 257
 258       <informaltable>
 259         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 260           <thead>
 261             <row>
 262               <entry>Flag</entry>
 263
 264               <entry>Description</entry>
 265               <entry>Static/Dynamic</entry>
 266               <entry>Reverse</entry>
 267             </row>
 268           </thead>
 269           <tbody>
 270             <row>
 271               <entry><option>-i</option><replaceable>dir1</replaceable>:<replaceable>dir2</replaceable>:...</entry>
 272               <entry>add <replaceable>dir</replaceable>,
 273                   <replaceable>dir2</replaceable>, etc. to import path</entry>
 274               <entry>static</entry>
 275               <entry>-</entry>
 276             </row>
 277             <row>
 278               <entry><option>-i</option></entry>
 279               <entry>Empty the import directory list</entry>
 280               <entry>static</entry>
 281               <entry>-</entry>
 282             </row>
 283           </tbody>
 284         </tgroup>
 285       </informaltable>
 286     </sect2>
 287
 288     <sect2>
 289       <title>Interface file options (<xref linkend="hi-options"/>)</title>
 290
 291       <informaltable>
 292         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 293           <thead>
 294             <row>
 295               <entry>Flag</entry>
 296
 297               <entry>Description</entry>
 298               <entry>Static/Dynamic</entry>
 299               <entry>Reverse</entry>
 300             </row>
 301           </thead>
 302           <tbody>
 303             <row>
 304               <entry><option>-ddump-hi</option></entry>
 305               <entry>Dump the new interface to stdout</entry>
 306               <entry>dynamic</entry>
 307               <entry>-</entry>
 308             </row>
 309             <row>
 310               <entry><option>-ddump-hi-diffs</option></entry>
 311               <entry>Show the differences vs. the old interface</entry>
 312               <entry>dynamic</entry>
 313               <entry>-</entry>
 314             </row>
 315             <row>
 316               <entry><option>-ddump-minimal-imports</option></entry>
 317               <entry>Dump a minimal set of imports</entry>
 318               <entry>dynamic</entry>
 319               <entry>-</entry>
 320             </row>
 321             <row>
 322               <entry><option>--show-iface</option> <replaceable>file</replaceable></entry>
 323               <entry>Read the interface in
 324               <replaceable>file</replaceable> and dump it as text to
 325               <literal>stdout</literal>.</entry>
 326               <entry>static</entry>
 327               <entry>-</entry>
 328             </row>
 329           </tbody>
 330         </tgroup>
 331       </informaltable>
 332     </sect2>
 333
 334     <sect2>
 335       <title>Recompilation checking (<xref linkend="recomp"/>)</title>
 336
 337       <informaltable>
 338         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 339           <thead>
 340             <row>
 341               <entry>Flag</entry>
 342
 343               <entry>Description</entry>
 344               <entry>Static/Dynamic</entry>
 345               <entry>Reverse</entry>
 346             </row>
 347           </thead>
 348           <tbody>
 349             <row>
 350               <entry><option>-no-recomp</option></entry>
 351               <entry>Turn off recompilation checking</entry>
 352               <entry>static</entry>
 353               <entry><option>-recomp</option></entry>
 354             </row>
 355           </tbody>
 356         </tgroup>
 357       </informaltable>
 358     </sect2>
 359
 360     <sect2>
 361       <title>Interactive-mode options (<xref linkend="ghci-dot-files"/>)</title>
 362
 363       <informaltable>
 364         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 365           <thead>
 366             <row>
 367               <entry>Flag</entry>
 368               <entry>Description</entry>
 369               <entry>Static/Dynamic</entry>
 370               <entry>Reverse</entry>
 371             </row>
 372           </thead>
 373           <tbody>
 374             <row>
 375               <entry><option>-ignore-dot-ghci</option></entry>
 376               <entry>Disable reading of <filename>.ghci</filename> files</entry>
 377               <entry>static</entry>
 378               <entry>-</entry>
 379             </row>
 380             <row>
 381               <entry><option>-read-dot-ghci</option></entry>
 382               <entry>Enable reading of <filename>.ghci</filename> files</entry>
 383               <entry>static</entry>
 384               <entry>-</entry>
 385             </row>
 386           </tbody>
 387         </tgroup>
 388       </informaltable>
 389     </sect2>
 390
 391     <sect2>
 392       <title>Packages (<xref linkend="packages"/>)</title>
 393       <informaltable>
 394         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 395           <thead>
 396             <row>
 397               <entry>Flag</entry>
 398               <entry>Description</entry>
 399               <entry>Static/Dynamic</entry>
 400               <entry>Reverse</entry>
 401             </row>
 402           </thead>
 403           <tbody>
 404             <row>
 405               <entry><option>-package</option> <replaceable>name</replaceable></entry>
 406               <entry>Use package <replaceable>name</replaceable></entry>
 407               <entry>static</entry>
 408               <entry>-</entry>
 409             </row>
 410             <row>
 411               <entry><option>-package-conf</option> <replaceable>file</replaceable></entry>
 412               <entry>Load more packages from <replaceable>file</replaceable></entry>
 413               <entry>static</entry>
 414               <entry>-</entry>
 415             </row>
 416             <row>
 417               <entry><option>-package-name</option> <replaceable>name</replaceable></entry>
 418               <entry>Compile code for package <replaceable>name</replaceable></entry>
 419               <entry>static</entry>
 420               <entry>-</entry>
 421             </row>
 422           </tbody>
 423         </tgroup>
 424       </informaltable>
 425     </sect2>
 426
 427     <sect2>
 428       <title>Language options (<xref linkend="options-language"/>)</title>
 429
 430       <informaltable>
 431         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 432           <thead>
 433             <row>
 434               <entry>Flag</entry>
 435               <entry>Description</entry>
 436               <entry>Static/Dynamic</entry>
 437               <entry>Reverse</entry>
 438             </row>
 439           </thead>
 440           <tbody>
 441             <row>
 442               <entry><option>-fallow-overlapping-instances</option></entry>
 443               <entry>Enable overlapping instances</entry>
 444               <entry>dynamic</entry>
 445               <entry><option>-fno-allow-overlapping-instances</option></entry>
 446             </row>
 447             <row>
 448               <entry><option>-farrows</option></entry>
 449               <entry>Enable arrow notation extension</entry>
 450               <entry>dynamic</entry>
 451               <entry><option>-fno-arrows</option></entry>
 452             </row>
 453             <row>
 454               <entry><option>-fallow-undecidable-instances</option></entry>
 455               <entry>Enable undecidable instances</entry>
 456               <entry>dynamic</entry>
 457               <entry><option>-fno-allow-undecidable-instances</option></entry>
 458             </row>
 459             <row>
 460               <entry><option>-fcontext-stack</option><replaceable>n</replaceable></entry>
 461               <entry>set the limit for context reduction</entry>
 462               <entry>static</entry>
 463               <entry><option>-</option></entry>
 464             </row>
 465             <row>
 466               <entry><option>-ffi</option> or <option>-fffi</option></entry>
 467               <entry>Enable foreign function interface (implied by
 468               <option>-fglasgow-exts</option>)</entry>
 469               <entry>dynamic</entry>
 470               <entry><option>-fno-ffi</option></entry>
 471             </row>
 472             <row>
 473               <entry><option>-fgenerics</option></entry>
 474               <entry>Enable generics</entry>
 475               <entry>dynamic</entry>
 476               <entry><option>-fno-fgenerics</option></entry>
 477             </row>
 478             <row>
 479               <entry><option>-fglasgow-exts</option></entry>
 480               <entry>Enable most language extensions</entry>
 481               <entry>dynamic</entry>
 482               <entry><option>-fno-glasgow-exts</option></entry>
 483             </row>
 484             <row>
 485               <entry><option>-fignore-asserts</option></entry>
 486               <entry>Ignore assertions</entry>
 487               <entry>dynamic</entry>
 488               <entry><option>-fno-ignore-asserts</option></entry>
 489             </row>
 490             <row>
 491               <entry><option>-fimplicit-params</option></entry>
 492               <entry>Enable Implicit Parameters</entry>
 493               <entry>dynamic</entry>
 494               <entry><option>-fno-implicit-params</option></entry>
 495             </row>
 496             <row>
 497               <entry><option>-firrefutable-tuples</option></entry>
 498               <entry>Make tuple pattern matching irrefutable</entry>
 499               <entry>dynamic</entry>
 500               <entry><option>-fno-irrefutable-tuples</option></entry>
 501             </row>
 502             <row>
 503               <entry><option>-fno-implicit-prelude</option></entry>
 504               <entry>Don't implicitly <literal>import Prelude</literal></entry>
 505               <entry>dynamic</entry>
 506               <entry>-</entry>
 507             </row>
 508             <row>
 509               <entry><option>-fno-monomorphism-restriction</option></entry>
 510               <entry>Disable the monomorphism restriction</entry>
 511               <entry>dynamic</entry>
 512               <entry><option>-</option></entry>
 513             </row>
 514             <row>
 515               <entry><option>-fth</option></entry>
 516               <entry>Enable Template Haskell</entry>
 517               <entry>dynamic</entry>
 518               <entry><option>-fno-th</option></entry>
 519             </row>
 520           </tbody>
 521         </tgroup>
 522       </informaltable>
 523     </sect2>
 524
 525     <sect2>
 526       <title>Warnings (<xref linkend="options-sanity"/>)</title>
 527
 528     <informaltable>
 529       <tgroup cols="3" align="left" colsep="1" rowsep="1">
 530         <thead>
 531           <row>
 532             <entry>Flag</entry>
 533             <entry>Description</entry>
 534             <entry>Static/Dynamic</entry>
 535             <entry>Reverse</entry>
 536           </row>
 537         </thead>
 538         <tbody>
 539           <row>
 540             <entry><option>-W</option></entry>
 541             <entry>enable normal warnings</entry>
 542             <entry>dynamic</entry>
 543             <entry><option>-w</option></entry>
 544           </row>
 545           <row>
 546             <entry><option>-w</option></entry>
 547             <entry>disable all warnings</entry>
 548             <entry>dynamic</entry>
 549             <entry>-</entry>
 550           </row>
 551           <row>
 552             <entry><option>-Wall</option></entry>
 553             <entry>enable all warnings</entry>
 554             <entry>dynamic</entry>
 555             <entry><option>-w</option></entry>
 556           </row>
 557           <row>
 558             <entry><option>-Werror</option></entry>
 559             <entry>make warnings fatal</entry>
 560             <entry>dynamic</entry>
 561             <entry></entry>
 562           </row>
 563
 564           <row>
 565             <entry><option>-fwarn-deprecations</option></entry>
 566             <entry>warn about uses of functions &amp; types that are deprecated</entry>
 567             <entry>dynamic</entry>
 568             <entry><option>-fno-warn-deprecations</option></entry>
 569           </row>
 570
 571           <row>
 572             <entry><option>-fwarn-duplicate-exports</option></entry>
 573             <entry>warn when an entity is exported multiple times</entry>
 574             <entry>dynamic</entry>
 575             <entry><option>-fno-warn-duplicate-exports</option></entry>
 576           </row>
 577
 578           <row>
 579             <entry><option>-fwarn-hi-shadowing</option></entry>
 580             <entry>warn when a <literal>.hi</literal> file in the
 581             current directory shadows a library</entry>
 582             <entry>dynamic</entry>
 583             <entry><option>-fno-warn-hi-shadowing</option></entry>
 584           </row>
 585
 586           <row>
 587             <entry><option>-fwarn-incomplete-patterns</option></entry>
 588             <entry>warn when a pattern match could fail</entry>
 589             <entry>dynamic</entry>
 590             <entry><option>-fno-warn-incomplete-patterns</option></entry>
 591           </row>
 592
 593           <row>
 594             <entry><option>-fwarn-misc</option></entry>
 595             <entry>enable miscellaneous warnings</entry>
 596             <entry>dynamic</entry>
 597             <entry><option>-fno-warn-misc</option></entry>
 598           </row>
 599
 600           <row>
 601             <entry><option>-fwarn-missing-fields</option></entry>
 602             <entry>warn when fields of a record are uninitialised</entry>
 603             <entry>dynamic</entry>
 604             <entry><option>-fno-warn-missing-fields</option></entry>
 605           </row>
 606
 607           <row>
 608             <entry><option>-fwarn-missing-methods</option></entry>
 609             <entry>warn when class methods are undefined</entry>
 610             <entry>dynamic</entry>
 611             <entry><option>-fno-warn-missing-methods</option></entry>
 612           </row>
 613
 614           <row>
 615             <entry><option>-fwarn-missing-signatures</option></entry>
 616             <entry>warn about top-level functions without signatures</entry>
 617             <entry>dynamic</entry>
 618             <entry><option>-fno-warn-missing-signatures</option></entry>
 619           </row>
 620
 621           <row>
 622             <entry><option>-fwarn-name-shadowing</option></entry>
 623             <entry>warn when names are shadowed</entry>
 624             <entry>dynamic</entry>
 625             <entry><option>-fno-warn-name-shadowing</option></entry>
 626           </row>
 627
 628           <row>
 629             <entry><option>-fwarn-overlapping-patterns</option></entry>
 630             <entry>warn about overlapping patterns</entry>
 631             <entry>dynamic</entry>
 632             <entry><option>-fno-warn-overlapping-patterns</option></entry>
 633           </row>
 634
 635           <row>
 636             <entry><option>-fwarn-simple-patterns</option></entry>
 637             <entry>warn about lambda-patterns that can fail</entry>
 638             <entry>dynamic</entry>
 639             <entry><option>-fno-warn-simple-patterns</option></entry>
 640           </row>
 641
 642           <row>
 643             <entry><option>-fwarn-type-defaults</option></entry>
 644             <entry>warn when defaulting happens</entry>
 645             <entry>dynamic</entry>
 646             <entry><option>-fno-warn-type-defaults</option></entry>
 647           </row>
 648
 649           <row>
 650             <entry><option>-fwarn-unused-binds</option></entry>
 651             <entry>warn about bindings that are unused</entry>
 652             <entry>dynamic</entry>
 653             <entry><option>-fno-warn-unused-binds</option></entry>
 654           </row>
 655
 656           <row>
 657             <entry><option>-fwarn-unused-imports</option></entry>
 658             <entry>warn about unnecessary imports</entry>
 659             <entry>dynamic</entry>
 660             <entry><option>-fno-warn-unused-imports</option></entry>
 661           </row>
 662
 663           <row>
 664             <entry><option>-fwarn-unused-matches</option></entry>
 665             <entry>warn about variables in patterns that aren't used</entry>
 666             <entry>dynamic</entry>
 667             <entry><option>-fno-warn-unused-matches</option></entry>
 668           </row>
 669
 670           </tbody>
 671         </tgroup>
 672       </informaltable>
 673
 674     </sect2>
 675     <sect2>
 676       <title>Optimisation levels (<xref linkend="options-optimise"/>)</title>
 677
 678       <informaltable>
 679         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 680           <thead>
 681             <row>
 682               <entry>Flag</entry>
 683               <entry>Description</entry>
 684               <entry>Static/Dynamic</entry>
 685               <entry>Reverse</entry>
 686             </row>
 687           </thead>
 688           <tbody>
 689             <row>
 690               <entry><option>-O</option></entry>
 691               <entry>Enable default optimisation (level 1)</entry>
 692               <entry>dynamic</entry>
 693               <entry><option>-O0</option></entry>
 694             </row>
 695             <row>
 696               <entry><option>-O</option><replaceable>n</replaceable></entry>
 697               <entry>Set optimisation level <replaceable>n</replaceable></entry>
 698               <entry>dynamic</entry>
 699               <entry><option>-O0</option></entry>
 700             </row>
 701           </tbody>
 702         </tgroup>
 703       </informaltable>
 704
 705     </sect2>
 706     <sect2>
 707       <title>Individual optimisations (<xref linkend="options-f"/>)</title>
 708
 709       <informaltable>
 710         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 711           <thead>
 712             <row>
 713               <entry>Flag</entry>
 714               <entry>Description</entry>
 715               <entry>Static/Dynamic</entry>
 716               <entry>Reverse</entry>
 717             </row>
 718           </thead>
 719           <tbody>
 720             <row>
 721               <entry><option>-fcase-merge</option></entry>
 722               <entry>Enable case-merging</entry>
 723               <entry>dynamic</entry>
 724               <entry><option>-fno-case-merge</option></entry>
 725             </row>
 726
 727             <row>
 728               <entry><option>-fdicts-strict</option></entry>
 729               <entry>Make dictionaries strict</entry>
 730               <entry>static</entry>
 731               <entry><option>-fno-dicts-strict</option></entry>
 732             </row>
 733
 734             <row>
 735               <entry><option>-fdo-eta-reduction</option></entry>
 736               <entry>Enable eta-reduction</entry>
 737               <entry>dynamic</entry>
 738               <entry><option>-fno-do-eta-reduction</option></entry>
 739             </row>
 740
 741             <row>
 742               <entry><option>-fdo-lambda-eta-expansion</option></entry>
 743               <entry>Enable lambda eta-reduction</entry>
 744               <entry>dynamic</entry>
 745               <entry><option>-fno-do-lambda-eta-expansion</option></entry>
 746             </row>
 747
 748             <row>
 749               <entry><option>-fexcess-precision</option></entry>
 750               <entry>Enable excess intermediate precision</entry>
 751               <entry>static</entry>
 752               <entry><option>-fno-excess-precision</option></entry>
 753             </row>
 754
 755             <row>
 756               <entry><option>-frules-off</option></entry>
 757               <entry>Switch off all rewrite rules (including rules
 758               generated by automatic specialisation of overloaded functions)</entry>
 759               <entry>static</entry>
 760               <entry><option>-frules-off</option></entry>
 761             </row>
 762
 763             <row>
 764               <entry><option>-fignore-asserts</option></entry>
 765               <entry>Ignore assertions in the source</entry>
 766               <entry>static</entry>
 767               <entry><option>-fno-ignore-asserts</option></entry>
 768             </row>
 769
 770             <row>
 771               <entry><option>-fignore-interface-pragmas</option></entry>
 772               <entry>Ignore pragmas in interface files</entry>
 773               <entry>static</entry>
 774               <entry><option>-fno-ignore-interface-pragmas</option></entry>
 775             </row>
 776
 777             <row>
 778               <entry><option>-fliberate-case-threshold</option></entry>
 779               <entry>Tweak the liberate-case optimisation (default: 10)</entry>
 780               <entry>static</entry>
 781               <entry><option>-fno-liberate-case-threshold</option></entry>
 782             </row>
 783
 784             <row>
 785               <entry><option>-fomit-interface-pragmas</option></entry>
 786               <entry>Don't generate interface pragmas</entry>
 787               <entry>dynamic</entry>
 788               <entry><option>-fno-omit-interface-pragmas</option></entry>
 789             </row>
 790
 791             <row>
 792               <entry><option>-fmax-worker-args</option></entry>
 793               <entry>If a worker has that many arguments, none will be
 794                 unpacked anymore (default: 10)</entry>
 795               <entry>static</entry>
 796               <entry>-</entry>
 797             </row>
 798
 799             <row>
 800               <entry><option>-fmax-simplifier-iterations</option></entry>
 801               <entry>Set the max iterations for the simplifier</entry>
 802               <entry>dynamic</entry>
 803               <entry>-</entry>
 804             </row>
 805
 806             <row>
 807               <entry><option>-fno-state-hack</option></entry>
 808               <entry>Turn off the "state hack" whereby any lambda with a real-world state token
 809               as argument is considered to be single-entry.  Hence OK to inline things inside it.</entry>
 810               <entry>static</entry>
 811               <entry>-</entry>
 812             </row>
 813
 814             <row>
 815               <entry><option>-fno-cpr</option></entry>
 816               <entry>Turn off CPR analysis</entry>
 817               <entry>static</entry>
 818               <entry>-fcpr</entry>
 819             </row>
 820
 821             <row>
 822               <entry><option>-fno-cse</option></entry>
 823               <entry>Turn off common sub-expression</entry>
 824               <entry>dynamic</entry>
 825               <entry>-</entry>
 826             </row>
 827
 828             <row>
 829               <entry><option>-fno-full-laziness</option></entry>
 830               <entry>Turn off full laziness (floating bindings outwards).  It is on by default.</entry>
 831               <entry>dynamic</entry>
 832               <entry>-ffull-laziness</entry>
 833             </row>
 834
 835             <row>
 836               <entry><option>-fno-pre-inlining</option></entry>
 837               <entry>Turn off pre-inlining</entry>
 838               <entry>static</entry>
 839               <entry>-</entry>
 840             </row>
 841
 842             <row>
 843               <entry><option>-fno-strictness</option></entry>
 844               <entry>Turn off strictness analysis</entry>
 845               <entry>dynamic</entry>
 846               <entry>-</entry>
 847             </row>
 848
 849             <row>
 850               <entry><option>-fnumbers-strict</option></entry>
 851               <entry>Make numbers strict</entry>
 852               <entry>dynamic</entry>
 853               <entry><option>-fno-numbers-strict</option></entry>
 854             </row>
 855
 856             <row>
 857               <entry><option>-funbox-strict-fields</option></entry>
 858               <entry>Flatten strict constructor fields</entry>
 859               <entry>dynamic</entry>
 860               <entry><option>-fno-unbox-strict-fields</option></entry>
 861             </row>
 862
 863             <row>
 864               <entry><option>-funfolding-creation-threshold</option></entry>
 865               <entry>Tweak unfolding settings</entry>
 866               <entry>static</entry>
 867               <entry><option>-fno-unfolding-creation-threshold</option></entry>
 868             </row>
 869
 870             <row>
 871               <entry><option>-funfolding-fun-discount</option></entry>
 872               <entry>Tweak unfolding settings</entry>
 873               <entry>static</entry>
 874               <entry><option>-fno-unfolding-fun-discount</option></entry>
 875             </row>
 876
 877             <row>
 878               <entry><option>-funfolding-keeness-factor</option></entry>
 879               <entry>Tweak unfolding settings</entry>
 880               <entry>static</entry>
 881               <entry><option>-fno-unfolding-keeness-factor</option></entry>
 882             </row>
 883
 884             <row>
 885               <entry><option>-funfolding-update-in-place</option></entry>
 886               <entry>Tweak unfolding settings</entry>
 887               <entry>static</entry>
 888               <entry><option>-fno-unfolding-update-in-place</option></entry>
 889             </row>
 890
 891             <row>
 892               <entry><option>-funfolding-use-threshold</option></entry>
 893               <entry>Tweak unfolding settings</entry>
 894               <entry>static</entry>
 895               <entry><option>-fno-unfolding-use-threshold</option></entry>
 896             </row>
 897           </tbody>
 898         </tgroup>
 899       </informaltable>
 900     </sect2>
 901
 902     <sect2>
 903       <title>Profiling options (<xref linkend="profiling"/>)</title>
 904
 905       <informaltable>
 906         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 907           <thead>
 908             <row>
 909               <entry>Flag</entry>
 910               <entry>Description</entry>
 911               <entry>Static/Dynamic</entry>
 912               <entry>Reverse</entry>
 913             </row>
 914           </thead>
 915           <tbody>
 916             <row>
 917               <entry><option>-auto</option></entry>
 918               <entry>Auto-add <literal>_scc_</literal>s to all
 919               exported functions</entry>
 920               <entry>static</entry>
 921               <entry><option>-no-auto</option></entry>
 922             </row>
 923             <row>
 924               <entry><option>-auto-all</option></entry>
 925               <entry>Auto-add <literal>_scc_</literal>s to all
 926               top-level functions</entry>
 927               <entry>static</entry>
 928               <entry><option>-no-auto-all</option></entry>
 929             </row>
 930             <row>
 931               <entry><option>-auto-dicts</option></entry>
 932               <entry>Auto-add <literal>_scc_</literal>s to all dictionaries</entry>
 933               <entry>static</entry>
 934               <entry><option>-no-auto-dicts</option></entry>
 935             </row>
 936             <row>
 937               <entry><option>-caf-all</option></entry>
 938               <entry>Auto-add <literal>_scc_</literal>s to all CAFs</entry>
 939               <entry>static</entry>
 940               <entry><option>-no-caf-all</option></entry>
 941             </row>
 942             <row>
 943               <entry><option>-prof</option></entry>
 944               <entry>Turn on profiling</entry>
 945               <entry>static</entry>
 946               <entry>-</entry>
 947             </row>
 948             <row>
 949               <entry><option>-ticky</option></entry>
 950               <entry>Turn on ticky-ticky profiling</entry>
 951               <entry>static</entry>
 952               <entry>-</entry>
 953             </row>
 954           </tbody>
 955         </tgroup>
 956       </informaltable>
 957     </sect2>
 958
 959     <sect2>
 960       <title>Parallelism options (<xref linkend="sec-using-parallel"/>)</title>
 961
 962       <informaltable>
 963         <tgroup cols="3" align="left" colsep="1" rowsep="1">
 964           <thead>
 965             <row>
 966               <entry>Flag</entry>
 967               <entry>Description</entry>
 968               <entry>Static/Dynamic</entry>
 969               <entry>Reverse</entry>
 970             </row>
 971           </thead>
 972           <tbody>
 973             <row>
 974               <entry><option>-gransim</option></entry>
 975               <entry>Enable GRANSIM</entry>
 976               <entry>static</entry>
 977               <entry>-</entry>
 978             </row>
 979             <row>
 980               <entry><option>-parallel</option></entry>
 981               <entry>Enable Parallel Haskell</entry>
 982               <entry>static</entry>
 983               <entry>-</entry>
 984             </row>
 985             <row>
 986               <entry><option>-smp</option></entry>
 987               <entry>Enable SMP support</entry>
 988               <entry>static</entry>
 989               <entry>-</entry>
 990             </row>
 991           </tbody>
 992         </tgroup>
 993       </informaltable>
 994     </sect2>
 995
 996     <sect2>
 997       <title>C pre-processor options (<xref linkend="c-pre-processor"/>)</title>
 998
 999       <informaltable>
1000         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1001           <thead>
1002             <row>
1003               <entry>Flag</entry>
1004               <entry>Description</entry>
1005               <entry>Static/Dynamic</entry>
1006               <entry>Reverse</entry>
1007             </row>
1008           </thead>
1009           <tbody>
1010             <row>
1011               <entry><option>-cpp</option></entry>
1012               <entry>Run the C pre-processor on Haskell source files</entry>
1013               <entry>dynamic</entry>
1014               <entry>-</entry>
1015             </row>
1016             <row>
1017               <entry><option>-D</option><replaceable>symbol</replaceable><optional>=<replaceable>value</replaceable></optional></entry>
1018               <entry>Define a symbol in the C pre-processor</entry>
1019               <entry>dynamic</entry>
1020               <entry><option>-U</option><replaceable>symbol</replaceable></entry>
1021             </row>
1022             <row>
1023               <entry><option>-U</option><replaceable>symbol</replaceable></entry>
1024               <entry>Undefine a symbol in the C pre-processor</entry>
1025               <entry>dynamic</entry>
1026               <entry>-</entry>
1027             </row>
1028             <row>
1029               <entry><option>-I</option><replaceable>dir</replaceable></entry>
1030               <entry>Add <replaceable>dir</replaceable> to the
1031               directory search list for <literal>#include</literal> files</entry>
1032               <entry>static</entry>
1033               <entry>-</entry>
1034             </row>
1035           </tbody>
1036         </tgroup>
1037       </informaltable>
1038     </sect2>
1039
1040     <sect2>
1041       <title>C compiler options (<xref linkend="options-C-compiler"/>)</title>
1042       <informaltable>
1043         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1044           <thead>
1045             <row>
1046               <entry>Flag</entry>
1047               <entry>Description</entry>
1048               <entry>Static/Dynamic</entry>
1049               <entry>Reverse</entry>
1050             </row>
1051           </thead>
1052           <tbody>
1053             <row>
1054               <entry><option>-#include</option> <replaceable>file</replaceable></entry>
1055               <entry>Include <replaceable>file</replaceable> when
1056               compiling the <filename>.hc</filename> file</entry>
1057               <entry>dynamic</entry>
1058               <entry>-</entry>
1059             </row>
1060           </tbody>
1061         </tgroup>
1062       </informaltable>
1063     </sect2>
1064
1065     <sect2>
1066       <title>Code generation options (<xref linkend="options-codegen"/>)</title>
1067
1068       <informaltable>
1069         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1070           <thead>
1071             <row>
1072               <entry>Flag</entry>
1073               <entry>Description</entry>
1074               <entry>Static/Dynamic</entry>
1075               <entry>Reverse</entry>
1076             </row>
1077           </thead>
1078           <tbody>
1079             <row>
1080               <entry><option>-fasm</option></entry>
1081               <entry>Use the native code generator</entry>
1082               <entry>dynamic</entry>
1083               <entry>-fvia-C</entry>
1084             </row>
1085             <row>
1086               <entry><option>-fvia-C</option></entry>
1087               <entry>Compile via C</entry>
1088               <entry>dynamic</entry>
1089               <entry>-fasm</entry>
1090             </row>
1091             <row>
1092               <entry><option>-fno-code</option></entry>
1093               <entry>Omit code generation</entry>
1094               <entry>static</entry>
1095               <entry>-</entry>
1096             </row>
1097           </tbody>
1098         </tgroup>
1099       </informaltable>
1100     </sect2>
1101
1102     <sect2>
1103       <title>Linking options (<xref linkend="options-linker"/>)</title>
1104
1105       <informaltable>
1106         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1107           <thead>
1108             <row>
1109               <entry>Flag</entry>
1110               <entry>Description</entry>
1111               <entry>Static/Dynamic</entry>
1112               <entry>Reverse</entry>
1113             </row>
1114           </thead>
1115           <tbody>
1116             <row>
1117               <entry><option>-dynamic</option></entry>
1118               <entry>Use dynamic Haskell libraries (if available)</entry>
1119               <entry>static</entry>
1120               <entry>-</entry>
1121             </row>
1122             <row>
1123               <entry><option>-framework</option> <replaceable>name</replaceable></entry>
1124               <entry>On Darwin/MacOS X only, link in the framework <replaceable>name</replaceable>.
1125                 This option corresponds to the <option>-framework</option> option for Apple's Linker.</entry>
1126               <entry>static</entry>
1127               <entry>-</entry>
1128             </row>
1129             <row>
1130               <entry><option>-framework-path</option> <replaceable>name</replaceable></entry>
1131               <entry>On Darwin/MacOS X only, add <replaceable>dir</replaceable> to the list of
1132                 directories searched for frameworks.
1133                 This option corresponds to the <option>-F</option> option for Apple's Linker.</entry>
1134               <entry>static</entry>
1135               <entry>-</entry>
1136             </row>
1137             <row>
1138               <entry><option>-l</option><replaceable>lib</replaceable></entry>
1139               <entry>Link in library <replaceable>lib</replaceable></entry>
1140               <entry>static</entry>
1141               <entry>-</entry>
1142             </row>
1143             <row>
1144               <entry><option>-L</option><replaceable>dir</replaceable></entry>
1145               <entry>Add <replaceable>dir</replaceable> to the list of
1146               directories searched for libraries</entry>
1147               <entry>static</entry>
1148               <entry>-</entry>
1149             </row>
1150             <row>
1151               <entry><option>-main-is</option></entry>
1152               <entry>Set main function</entry>
1153               <entry>static</entry>
1154               <entry>-</entry>
1155             </row>
1156             <row>
1157               <entry><option>-no-hs-main</option></entry>
1158               <entry>Don't assume this program contains <literal>main</literal></entry>
1159               <entry>static</entry>
1160               <entry>-</entry>
1161             </row>
1162             <row>
1163               <entry><option>-no-link</option></entry>
1164               <entry>Omit linking</entry>
1165               <entry>static</entry>
1166               <entry>-</entry>
1167             </row>
1168             <row>
1169               <entry><option>-package</option> <replaceable>name</replaceable></entry>
1170               <entry>Link in package <replaceable>name</replaceable></entry>
1171               <entry>static</entry>
1172               <entry>-</entry>
1173             </row>
1174             <row>
1175               <entry><option>-split-objs</option></entry>
1176               <entry>Split objects (for libraries)</entry>
1177               <entry>static</entry>
1178               <entry>-</entry>
1179             </row>
1180             <row>
1181               <entry><option>-static</option></entry>
1182               <entry>Use static Haskell libraries</entry>
1183               <entry>static</entry>
1184               <entry>-</entry>
1185             </row>
1186             <row>
1187               <entry><option>-threaded</option></entry>
1188               <entry>Use the threaded runtime</entry>
1189               <entry>static</entry>
1190               <entry>-</entry>
1191             </row>
1192             <row>
1193               <entry><option>-debug</option></entry>
1194               <entry>Use the debugging runtime</entry>
1195               <entry>static</entry>
1196               <entry>-</entry>
1197             </row>
1198           </tbody>
1199         </tgroup>
1200       </informaltable>
1201     </sect2>
1202
1203     <sect2>
1204       <title>Replacing phases (<xref linkend="replacing-phases"/>)</title>
1205
1206       <informaltable>
1207         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1208           <thead>
1209             <row>
1210               <entry>Flag</entry>
1211               <entry>Description</entry>
1212               <entry>Static/Dynamic</entry>
1213               <entry>Reverse</entry>
1214             </row>
1215           </thead>
1216           <tbody>
1217             <row>
1218               <entry><option>-pgmL</option> <replaceable>cmd</replaceable></entry>
1219               <entry>Use <replaceable>cmd</replaceable> as the literate pre-processor</entry>
1220               <entry>static</entry>
1221               <entry>-</entry>
1222             </row>
1223             <row>
1224               <entry><option>-pgmP</option> <replaceable>cmd</replaceable></entry>
1225               <entry>Use <replaceable>cmd</replaceable> as the C
1226               pre-processor (with <option>-cpp</option> only)</entry>
1227               <entry>static</entry> <entry>-</entry>
1228             </row>
1229             <row>
1230               <entry><option>-pgmc</option> <replaceable>cmd</replaceable></entry>
1231               <entry>Use <replaceable>cmd</replaceable> as the C compiler</entry>
1232               <entry>static</entry>
1233               <entry>-</entry>
1234             </row>
1235             <row>
1236               <entry><option>-pgma</option> <replaceable>cmd</replaceable></entry>
1237               <entry>Use <replaceable>cmd</replaceable> as the assembler</entry>
1238               <entry>static</entry>
1239               <entry>-</entry>
1240             </row>
1241             <row>
1242               <entry><option>-pgml</option> <replaceable>cmd</replaceable></entry>
1243               <entry>Use <replaceable>cmd</replaceable> as the linker</entry>
1244               <entry>static</entry>
1245               <entry>-</entry>
1246             </row>
1247             <row>
1248               <entry><option>-pgmdll</option> <replaceable>cmd</replaceable></entry>
1249               <entry>Use <replaceable>cmd</replaceable> as the DLL generator</entry>
1250               <entry>static</entry>
1251               <entry>-</entry>
1252             </row>
1253             <row>
1254               <entry><option>-pgmdep</option> <replaceable>cmd</replaceable></entry>
1255               <entry>Use <replaceable>cmd</replaceable> as the dependency generator</entry>
1256               <entry>static</entry>
1257               <entry>-</entry>
1258             </row>
1259             <row>
1260               <entry><option>-pgmF</option> <replaceable>cmd</replaceable></entry>
1261               <entry>Use <replaceable>cmd</replaceable> as the pre-processor
1262               (with <option>-F</option> only)</entry>
1263               <entry>static</entry>
1264               <entry>-</entry>
1265             </row>
1266           </tbody>
1267         </tgroup>
1268       </informaltable>
1269       <indexterm><primary><option>-pgmL</option></primary></indexterm>
1270       <indexterm><primary><option>-pgmP</option></primary></indexterm>
1271       <indexterm><primary><option>-pgmc</option></primary></indexterm>
1272       <indexterm><primary><option>-pgma</option></primary></indexterm>
1273       <indexterm><primary><option>-pgml</option></primary></indexterm>
1274       <indexterm><primary><option>-pgmdll</option></primary></indexterm>
1275       <indexterm><primary><option>-pgmdep</option></primary></indexterm>
1276       <indexterm><primary><option>-pgmF</option></primary></indexterm>
1277
1278     </sect2>
1279
1280     <sect2>
1281       <title>Forcing options to particular phases (<xref linkend="forcing-options-through"/>)</title>
1282
1283       <informaltable>
1284         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1285           <thead>
1286             <row>
1287               <entry>Flag</entry>
1288               <entry>Description</entry>
1289               <entry>Static/Dynamic</entry>
1290               <entry>Reverse</entry>
1291             </row>
1292           </thead>
1293           <tbody>
1294             <row>
1295               <entry><option>-optL</option> <replaceable>option</replaceable></entry>
1296               <entry>pass <replaceable>option</replaceable> to the literate pre-processor</entry>
1297               <entry>dynamic</entry>
1298               <entry>-</entry>
1299             </row>
1300             <row>
1301               <entry><option>-optP</option> <replaceable>option</replaceable></entry>
1302               <entry>pass <replaceable>option</replaceable> to cpp (with
1303               <option>-cpp</option> only)</entry>
1304               <entry>dynamic</entry>
1305               <entry>-</entry>
1306             </row>
1307             <row>
1308               <entry><option>-optF</option> <replaceable>option</replaceable></entry>
1309               <entry>pass <replaceable>option</replaceable> to the
1310               custom pre-processor</entry>
1311               <entry>dynamic</entry>
1312               <entry>-</entry>
1313             </row>
1314             <row>
1315               <entry><option>-optc</option> <replaceable>option</replaceable></entry>
1316               <entry>pass <replaceable>option</replaceable> to the C compiler</entry>
1317               <entry>dynamic</entry>
1318               <entry>-</entry>
1319             </row>
1320             <row>
1321               <entry><option>-opta</option> <replaceable>option</replaceable></entry>
1322               <entry>pass <replaceable>option</replaceable> to the assembler</entry>
1323               <entry>dynamic</entry>
1324               <entry>-</entry>
1325             </row>
1326             <row>
1327               <entry><option>-optl</option> <replaceable>option</replaceable></entry>
1328               <entry>pass <replaceable>option</replaceable> to the linker</entry>
1329               <entry>static</entry>
1330               <entry>-</entry>
1331             </row>
1332             <row>
1333               <entry><option>-optdll</option> <replaceable>option</replaceable></entry>
1334               <entry>pass <replaceable>option</replaceable> to the DLL generator</entry>
1335               <entry>static</entry>
1336               <entry>-</entry>
1337             </row>
1338             <row>
1339               <entry><option>-optdep</option> <replaceable>option</replaceable></entry>
1340               <entry>pass <replaceable>option</replaceable> to the dependency generator</entry>
1341               <entry>static</entry>
1342               <entry>-</entry>
1343             </row>
1344           </tbody>
1345         </tgroup>
1346       </informaltable>
1347     </sect2>
1348
1349     <sect2>
1350       <title>Platform-specific options (<xref linkend="options-platform"/>)</title>
1351
1352       <informaltable>
1353         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1354           <thead>
1355             <row>
1356               <entry>Flag</entry>
1357               <entry>Description</entry>
1358               <entry>Static/Dynamic</entry>
1359               <entry>Reverse</entry>
1360             </row>
1361           </thead>
1362           <tbody>
1363             <row>
1364               <entry><option>-mv8</option></entry>
1365               <entry>(SPARC only) enable version 8 support</entry>
1366               <entry>static</entry>
1367               <entry>-</entry>
1368             </row>
1369             <row>
1370               <entry><option>-monly-[32]-regs</option></entry>
1371               <entry>(x86 only) give some registers back to the C compiler</entry>
1372               <entry>dynamic</entry>
1373               <entry>-</entry>
1374             </row>
1375           </tbody>
1376         </tgroup>
1377       </informaltable>
1378     </sect2>
1379
1380
1381     <sect2>
1382       <title>External core file options (<xref linkend="ext-core"/>)</title>
1383
1384       <informaltable>
1385         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1386           <thead>
1387             <row>
1388               <entry>Flag</entry>
1389               <entry>Description</entry>
1390               <entry>Static/Dynamic</entry>
1391               <entry>Reverse</entry>
1392             </row>
1393           </thead>
1394           <tbody>
1395             <row>
1396               <entry><option>-fext-core</option></entry>
1397               <entry>Generate <filename>.hcr</filename> external Core files</entry>
1398               <entry>static</entry>
1399               <entry>-</entry>
1400             </row>
1401           </tbody>
1402         </tgroup>
1403       </informaltable>
1404     </sect2>
1405
1406
1407     <sect2>
1408       <title>Compiler debugging options (<xref linkend="options-debugging"/>)</title>
1409
1410       <informaltable>
1411         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1412           <thead>
1413             <row>
1414               <entry>Flag</entry>
1415               <entry>Description</entry>
1416               <entry>Static/Dynamic</entry>
1417               <entry>Reverse</entry>
1418             </row>
1419           </thead>
1420           <tbody>
1421             <row>
1422               <entry><option>-dcore-lint</option></entry>
1423               <entry>Turn on internal sanity checking</entry>
1424               <entry>dynamic</entry>
1425               <entry>-</entry>
1426             </row>
1427             <row>
1428               <entry><option>-ddump-absC</option></entry>
1429               <entry>Dump abstract C</entry>
1430               <entry>dynamic</entry>
1431               <entry>-</entry>
1432             </row>
1433             <row>
1434               <entry><option>-ddump-asm</option></entry>
1435               <entry>Dump assembly</entry>
1436               <entry>dynamic</entry>
1437               <entry>-</entry>
1438             </row>
1439             <row>
1440               <entry><option>-ddump-bcos</option></entry>
1441               <entry>Dump interpreter byte code</entry>
1442               <entry>dynamic</entry>
1443               <entry>-</entry>
1444             </row>
1445             <row>
1446               <entry><option>-ddump-cpranal</option></entry>
1447               <entry>Dump output from CPR analysis</entry>
1448               <entry>dynamic</entry>
1449               <entry>-</entry>
1450             </row>
1451             <row>
1452               <entry><option>-ddump-cse</option></entry>
1453               <entry>Dump CSE output</entry>
1454               <entry>dynamic</entry>
1455               <entry>-</entry>
1456             </row>
1457             <row>
1458               <entry><option>-ddump-deriv</option></entry>
1459               <entry>Dump deriving output</entry>
1460               <entry>dynamic</entry>
1461               <entry>-</entry>
1462             </row>
1463             <row>
1464               <entry><option>-ddump-ds</option></entry>
1465               <entry>Dump desugarer output</entry>
1466               <entry>dynamic</entry>
1467               <entry>-</entry>
1468             </row>
1469             <row>
1470               <entry><option>-ddump-flatC</option></entry>
1471               <entry>Dump &ldquo;flat&rdquo; C</entry>
1472               <entry>dynamic</entry>
1473               <entry>-</entry>
1474             </row>
1475             <row>
1476               <entry><option>-ddump-foreign</option></entry>
1477               <entry>Dump <literal>foreign export</literal> stubs</entry>
1478               <entry>dynamic</entry>
1479               <entry>-</entry>
1480             </row>
1481             <row>
1482               <entry><option>-ddump-inlinings</option></entry>
1483               <entry>Dump inlining info</entry>
1484               <entry>dynamic</entry>
1485               <entry>-</entry>
1486             </row>
1487             <row>
1488               <entry><option>-ddump-occur-anal</option></entry>
1489               <entry>Dump occurrence analysis output</entry>
1490               <entry>dynamic</entry>
1491               <entry>-</entry>
1492             </row>
1493             <row>
1494               <entry><option>-ddump-parsed</option></entry>
1495               <entry>Dump parse tree</entry>
1496               <entry>dynamic</entry>
1497               <entry>-</entry>
1498             </row>
1499             <row>
1500               <entry><option>-ddump-realC</option></entry>
1501               <entry>Dump &ldquo;real&rdquo; C</entry>
1502               <entry>dynamic</entry>
1503               <entry>-</entry>
1504             </row>
1505             <row>
1506               <entry><option>-ddump-rn</option></entry>
1507               <entry>Dump renamer output</entry>
1508               <entry>dynamic</entry>
1509               <entry>-</entry>
1510             </row>
1511             <row>
1512               <entry><option>-ddump-rules</option></entry>
1513               <entry>Dump rules</entry>
1514               <entry>dynamic</entry>
1515               <entry>-</entry>
1516             </row>
1517             <row>
1518               <entry><option>-ddump-sat</option></entry>
1519               <entry>Dump saturated output</entry>
1520               <entry>dynamic</entry>
1521               <entry>-</entry>
1522             </row>
1523             <row>
1524               <entry><option>-ddump-simpl</option></entry>
1525               <entry>Dump final simplifier output</entry>
1526               <entry>dynamic</entry>
1527               <entry>-</entry>
1528             </row>
1529             <row>
1530               <entry><option>-ddump-simpl-iterations</option></entry>
1531               <entry>Dump output from each simplifier iteration</entry>
1532               <entry>dynamic</entry>
1533               <entry>-</entry>
1534             </row>
1535             <row>
1536               <entry><option>-ddump-spec</option></entry>
1537               <entry>Dump specialiser output</entry>
1538               <entry>dynamic</entry>
1539               <entry>-</entry>
1540             </row>
1541             <row>
1542               <entry><option>-ddump-stg</option></entry>
1543               <entry>Dump final STG</entry>
1544               <entry>dynamic</entry>
1545               <entry>-</entry>
1546             </row>
1547             <row>
1548               <entry><option>-ddump-stranal</option></entry>
1549               <entry>Dump strictness analyser output</entry>
1550               <entry>dynamic</entry>
1551               <entry>-</entry>
1552             </row>
1553             <row>
1554               <entry><option>-ddump-tc</option></entry>
1555               <entry>Dump typechecker output</entry>
1556               <entry>dynamic</entry>
1557               <entry>-</entry>
1558             </row>
1559             <row>
1560               <entry><option>-ddump-types</option></entry>
1561               <entry>Dump type signatures</entry>
1562               <entry>dynamic</entry>
1563               <entry>-</entry>
1564             </row>
1565             <row>
1566               <entry><option>-ddump-usagesp</option></entry>
1567               <entry>Dump UsageSP analysis output</entry>
1568               <entry>dynamic</entry>
1569               <entry>-</entry>
1570             </row>
1571             <row>
1572               <entry><option>-ddump-worker-wrapper</option></entry>
1573               <entry>Dump worker-wrapper output</entry>
1574               <entry>dynamic</entry>
1575               <entry>-</entry>
1576             </row>
1577             <row>
1578               <entry><option>-ddump-rn-trace</option></entry>
1579               <entry>Trace renamer</entry>
1580               <entry>dynamic</entry>
1581               <entry>-</entry>
1582             </row>
1583             <row>
1584               <entry><option>-ddump-rn-stats</option></entry>
1585               <entry>Renamer stats</entry>
1586               <entry>dynamic</entry>
1587               <entry>-</entry>
1588             </row>
1589             <row>
1590               <entry><option>-ddump-stix</option></entry>
1591               <entry>Native code generator intermediate form</entry>
1592               <entry>dynamic</entry>
1593               <entry>-</entry>
1594             </row>
1595             <row>
1596               <entry><option>-ddump-simpl-stats</option></entry>
1597               <entry>Dump simplifier stats</entry>
1598               <entry>dynamic</entry>
1599               <entry>-</entry>
1600             </row>
1601             <row>
1602               <entry><option>-dppr-debug</option></entry>
1603               <entry>Turn on debug printing (more verbose)</entry>
1604               <entry>static</entry>
1605               <entry>-</entry>
1606             </row>
1607             <row>
1608               <entry><option>-dppr-noprags</option></entry>
1609               <entry>Don't output pragma info in dumps</entry>
1610               <entry>static</entry>
1611               <entry>-</entry>
1612             </row>
1613             <row>
1614               <entry><option>-dppr-user-length</option></entry>
1615               <entry>Set the depth for printing expressions in error msgs</entry>
1616               <entry>static</entry>
1617               <entry>-</entry>
1618             </row>
1619             <row>
1620               <entry><option>-dsource-stats</option></entry>
1621               <entry>Dump haskell source stats</entry>
1622               <entry>dynamic</entry>
1623               <entry>-</entry>
1624             </row>
1625             <row>
1626               <entry><option>-dstg-lint</option></entry>
1627               <entry>STG pass sanity checking</entry>
1628               <entry>dynamic</entry>
1629               <entry>-</entry>
1630             </row>
1631             <row>
1632               <entry><option>-dstg-stats</option></entry>
1633               <entry>Dump STG stats</entry>
1634               <entry>dynamic</entry>
1635               <entry>-</entry>
1636             </row>
1637             <row>
1638               <entry><option>-dusagesp-lint</option></entry>
1639               <entry>UsageSP sanity checker</entry>
1640               <entry>dynamic</entry>
1641               <entry>-</entry>
1642             </row>
1643             <row>
1644               <entry><option>-dverbose-core2core</option></entry>
1645               <entry>Show output from each core-to-core pass</entry>
1646               <entry>dynamic</entry>
1647               <entry>-</entry>
1648             </row>
1649             <row>
1650               <entry><option>-dverbose-stg2stg</option></entry>
1651               <entry>Show output from each STG-to-STG pass</entry>
1652               <entry>dynamic</entry>
1653               <entry>-</entry>
1654             </row>
1655             <row>
1656               <entry><option>-unreg</option></entry>
1657               <entry>Enable unregisterised compilation</entry>
1658               <entry>static</entry>
1659               <entry>-</entry>
1660             </row>
1661           </tbody>
1662         </tgroup>
1663       </informaltable>
1664     </sect2>
1665
1666     <sect2>
1667       <title>Misc compiler options</title>
1668
1669       <informaltable>
1670         <tgroup cols="3" align="left" colsep="1" rowsep="1">
1671           <thead>
1672             <row>
1673               <entry>Flag</entry>
1674               <entry>Description</entry>
1675               <entry>Static/Dynamic</entry>
1676               <entry>Reverse</entry>
1677             </row>
1678           </thead>
1679           <tbody>
1680             <row>
1681               <entry><option>-femit-extern-decls</option></entry>
1682               <entry>???</entry>
1683               <entry>static</entry>
1684               <entry>-</entry>
1685             </row>
1686             <row>
1687               <entry><option>-fglobalise-toplev-names</option></entry>
1688               <entry>Make all top-level names global (for <option>-split-objs</option>)</entry>
1689               <entry>static</entry>
1690               <entry>-</entry>
1691             </row>
1692             <row>
1693               <entry><option>-fno-hi-version-check</option></entry>
1694               <entry>Don't complain about <literal>.hi</literal> file mismatches</entry>
1695               <entry>static</entry>
1696               <entry>-</entry>
1697             </row>
1698             <row>
1699               <entry><option>-dno-black-holing</option></entry>
1700               <entry>Turn off black holing (probably doesn't work)</entry>
1701               <entry>static</entry>
1702               <entry>-</entry>
1703             </row>
1704             <row>
1705               <entry><option>-fno-method-sharing</option></entry>
1706               <entry>Don't share specialisations of overloaded functions</entry>
1707               <entry>static</entry>
1708               <entry>-</entry>
1709             </row>
1710             <row>
1711               <entry><option>-fno-prune-decls</option></entry>
1712               <entry>Renamer: don't prune declarations</entry>
1713               <entry>static</entry>
1714               <entry>-</entry>
1715             </row>
1716             <row>
1717               <entry><option>-fhistory-size</option></entry>
1718               <entry>Set simplification history size</entry>
1719               <entry>static</entry>
1720               <entry>-</entry>
1721             </row>
1722             <row>
1723               <entry><option>-funregisterised</option></entry>
1724               <entry>Unregisterised compilation (use <option>-unreg</option> instead)</entry>
1725               <entry>static</entry>
1726               <entry>-</entry>
1727             </row>
1728             <row>
1729               <entry><option>-fno-asm-mangling</option></entry>
1730               <entry>Turn off assembly mangling (use <option>-unreg</option> instead)</entry>
1731               <entry>static</entry>
1732               <entry>-</entry>
1733             </row>
1734           </tbody>
1735         </tgroup>
1736       </informaltable>
1737     </sect2>
1738   </sect1>
1739
1740
1741 <!--
1742 Still to document:
1743
1744 Misc:
1745   ,  ( "H"                 , HasArg (setHeapSize . fromIntegral . decodeSize) )
1746   ,  ( "Rghc-timing"       , NoArg  (enableTimingStats) )
1747
1748   -Bdir
1749 -->
1750
1751 <!-- Emacs stuff:
1752      ;;; Local Variables: ***
1753      ;;; mode: xml ***
1754      ;;; sgml-parent-document: ("users_guide.xml" "book" "chapter") ***
1755      ;;; End: ***
1756  -->