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</title>
  12
  13       <para><xref linkend="options-help"/></para>
  14
  15       <informaltable>
  16         <tgroup cols="4" align="left" colsep="1" rowsep="1">
  17           <thead>
  18             <row>
  19               <entry>Flag</entry>
  20               <entry>Description</entry>
  21               <entry>Static/Dynamic</entry>
  22               <entry>Reverse</entry>
  23             </row>
  24           </thead>
  25           <tbody>
  26             <row>
  27               <entry><option>-?</option></entry>
  28               <entry>help</entry>
  29               <entry>mode</entry>
  30               <entry>-</entry>
  31             </row>
  32             <row>
  33               <entry><option>-help</option></entry>
  34               <entry>help</entry>
  35               <entry>mode</entry>
  36               <entry>-</entry>
  37             </row>
  38             <row>
  39               <entry><option>-n</option></entry>
  40               <entry>do a dry run</entry>
  41               <entry>dynamic</entry>
  42               <entry>-</entry>
  43             </row>
  44             <row>
  45               <entry><option>-v</option></entry>
  46               <entry>verbose mode (equivalent to <option>-v3</option>)</entry>
  47               <entry>dynamic</entry>
  48               <entry>-</entry>
  49             </row>
  50             <row>
  51               <entry><option>-v</option><replaceable>n</replaceable></entry>
  52               <entry>set verbosity level</entry>
  53               <entry>dynamic</entry>
  54               <entry>-</entry>
  55             </row>
  56             <row>
  57               <entry><option>-V</option></entry>
  58               <entry>display GHC version</entry>
  59               <entry>mode</entry>
  60               <entry>-</entry>
  61             </row>
  62             <row>
  63               <entry><option>&ndash;&ndash;supported-extensions</option> or <option>&ndash;&ndash;supported-languages</option></entry>
  64               <entry>display the supported languages and language extensions</entry>
  65               <entry>mode</entry>
  66               <entry>-</entry>
  67             </row>
  68             <row>
  69               <entry><option>&ndash;&ndash;info</option></entry>
  70               <entry>display information about the compiler</entry>
  71               <entry>mode</entry>
  72               <entry>-</entry>
  73             </row>
  74             <row>
  75               <entry><option>&ndash;&ndash;version</option></entry>
  76               <entry>display GHC version</entry>
  77               <entry>mode</entry>
  78               <entry>-</entry>
  79             </row>
  80             <row>
  81               <entry><option>&ndash;&ndash;numeric-version</option></entry>
  82               <entry>display GHC version (numeric only)</entry>
  83               <entry>mode</entry>
  84               <entry>-</entry>
  85             </row>
  86             <row>
  87               <entry><option>&ndash;&ndash;print-libdir</option></entry>
  88               <entry>display GHC library directory</entry>
  89               <entry>mode</entry>
  90               <entry>-</entry>
  91             </row>
  92             <row>
  93               <entry><option>-ferror-spans</option></entry>
  94               <entry>output full span in error messages</entry>
  95               <entry>static</entry>
  96               <entry>-</entry>
  97             </row>
  98             <row>
  99               <entry><option>-H</option><replaceable>size</replaceable></entry>
 100               <entry>Set the minimum heap size to <replaceable>size</replaceable></entry>
 101               <entry>static</entry>
 102               <entry>-</entry>
 103             </row>
 104             <row>
 105               <entry><option>-Rghc-timing</option></entry>
 106               <entry>Summarise timing stats for GHC (same as <literal>+RTS -tstderr</literal>)</entry>
 107               <entry>static</entry>
 108               <entry>-</entry>
 109             </row>
 110           </tbody>
 111         </tgroup>
 112       </informaltable>
 113
 114     </sect2>
 115     <sect2>
 116       <title>Which phases to run</title>
 117
 118       <para><xref linkend="options-order"/></para>
 119
 120       <informaltable>
 121         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 122           <thead>
 123             <row>
 124               <entry>Flag</entry>
 125               <entry>Description</entry>
 126               <entry>Static/Dynamic</entry>
 127               <entry>Reverse</entry>
 128             </row>
 129           </thead>
 130           <tbody>
 131             <row>
 132               <entry><option>-E</option></entry>
 133               <entry>Stop after preprocessing (<literal>.hspp</literal> file)</entry>
 134               <entry>mode</entry>
 135               <entry>-</entry>
 136             </row>
 137             <row>
 138               <entry><option>-C</option></entry>
 139               <entry>Stop after generating C (<literal>.hc</literal> file)</entry>
 140               <entry>mode</entry>
 141               <entry>-</entry>
 142             </row>
 143             <row>
 144               <entry><option>-S</option></entry>
 145               <entry>Stop after generating assembly (<literal>.s</literal> file)</entry>
 146               <entry>mode</entry>
 147               <entry>-</entry>
 148             </row>
 149             <row>
 150               <entry><option>-c</option></entry>
 151               <entry>Do not link</entry>
 152               <entry>dynamic</entry>
 153               <entry>-</entry>
 154             </row>
 155             <row>
 156               <entry><option>-x</option> <replaceable>suffix</replaceable></entry>
 157               <entry>Override default behaviour for source files</entry>
 158               <entry>static</entry>
 159               <entry>-</entry>
 160             </row>
 161           </tbody>
 162         </tgroup>
 163       </informaltable>
 164     </sect2>
 165
 166      <sect2>
 167       <title>Alternative modes of operation</title>
 168
 169       <para><xref linkend="modes"/></para>
 170
 171       <informaltable>
 172         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 173           <thead>
 174             <row>
 175               <entry>Flag</entry>
 176               <entry>Description</entry>
 177               <entry>Static/Dynamic</entry>
 178               <entry>Reverse</entry>
 179             </row>
 180           </thead>
 181           <tbody>
 182             <row>
 183               <entry><option>--interactive</option></entry>
 184               <entry>Interactive mode - normally used by just running <command>ghci</command>;
 185               see <xref linkend="ghci"/> for details.</entry>
 186               <entry>mode</entry>
 187               <entry>-</entry>
 188             </row>
 189             <row>
 190               <entry><option>--make</option></entry>
 191               <entry>Build a multi-module Haskell program, automatically figuring out dependencies. Likely to be much easier, and faster, than using <command>make</command>;
 192               see <xref linkend="make-mode"/> for details..</entry>
 193               <entry>mode</entry>
 194               <entry>-</entry>
 195             </row>
 196             <row>
 197               <entry><option>-e <replaceable>expr</replaceable></option></entry>
 198               <entry>Evaluate <replaceable>expr</replaceable>;
 199               see <xref linkend="eval-mode"/> for details.</entry>
 200               <entry>mode</entry>
 201               <entry>-</entry>
 202             </row>
 203             <row>
 204               <entry><option>-M</option></entry>
 205               <entry>Generate dependency information suitable for use in a <filename>Makefile</filename>;
 206               see <xref linkend="makefile-dependencies"/> for details.</entry>
 207               <entry>mode</entry>
 208               <entry>-</entry>
 209             </row>
 210           </tbody>
 211         </tgroup>
 212       </informaltable>
 213     </sect2>
 214
 215     <sect2>
 216       <title>Redirecting output</title>
 217
 218       <para><xref linkend="options-output"/></para>
 219
 220       <informaltable>
 221         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 222           <thead>
 223             <row>
 224               <entry>Flag</entry>
 225               <entry>Description</entry>
 226               <entry>Static/Dynamic</entry>
 227               <entry>Reverse</entry>
 228             </row>
 229           </thead>
 230           <tbody>
 231             <row>
 232               <entry><option>-hcsuf</option> <replaceable>suffix</replaceable></entry>
 233               <entry>set the suffix to use for intermediate C files</entry>
 234               <entry>dynamic</entry>
 235               <entry>-</entry>
 236             </row>
 237             <row>
 238               <entry><option>-hidir</option> <replaceable>dir</replaceable></entry>
 239               <entry>set directory for interface files</entry>
 240               <entry>dynamic</entry>
 241               <entry>-</entry>
 242             </row>
 243             <row>
 244               <entry><option>-hisuf</option> <replaceable>suffix</replaceable></entry>
 245               <entry>set the suffix to use for interface files</entry>
 246               <entry>dynamic</entry>
 247               <entry>-</entry>
 248             </row>
 249             <row>
 250               <entry><option>-o</option> <replaceable>filename</replaceable></entry>
 251               <entry>set output filename</entry>
 252               <entry>dynamic</entry>
 253               <entry>-</entry>
 254             </row>
 255             <row>
 256               <entry><option>-odir</option> <replaceable>dir</replaceable></entry>
 257               <entry>set directory for object files</entry>
 258               <entry>dynamic</entry>
 259               <entry>-</entry>
 260             </row>
 261             <row>
 262               <entry><option>-ohi</option> <replaceable>filename</replaceable></entry>
 263               <entry>set the filename in which to put the interface</entry>
 264               <entry>dynamic</entry>
 265               <entry></entry>
 266             </row>
 267             <row>
 268               <entry><option>-osuf</option> <replaceable>suffix</replaceable></entry>
 269               <entry>set the output file suffix</entry>
 270               <entry>dynamic</entry>
 271               <entry>-</entry>
 272             </row>
 273             <row>
 274               <entry><option>-stubdir</option> <replaceable>dir</replaceable></entry>
 275               <entry>redirect FFi stub files</entry>
 276               <entry>dynamic</entry>
 277               <entry>-</entry>
 278             </row>
 279             <row>
 280               <entry><option>-outputdir</option> <replaceable>dir</replaceable></entry>
 281               <entry>set output directory</entry>
 282               <entry>dynamic</entry>
 283               <entry>-</entry>
 284             </row>
 285           </tbody>
 286         </tgroup>
 287       </informaltable>
 288     </sect2>
 289
 290     <sect2>
 291       <title>Keeping intermediate files</title>
 292
 293       <para><xref linkend="keeping-intermediates"/></para>
 294
 295       <informaltable>
 296         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 297           <thead>
 298             <row>
 299               <entry>Flag</entry>
 300               <entry>Description</entry>
 301               <entry>Static/Dynamic</entry>
 302               <entry>Reverse</entry>
 303             </row>
 304           </thead>
 305           <tbody>
 306             <row>
 307               <entry><option>-keep-hc-file</option> or
 308                  <option>-keep-hc-files</option></entry>
 309               <entry>retain intermediate <literal>.hc</literal> files</entry>
 310               <entry>dynamic</entry>
 311               <entry>-</entry>
 312             </row>
 313             <row>
 314               <entry><option>-keep-llvm-file</option> or
 315                  <option>-keep-llvm-files</option></entry>
 316               <entry>retain intermediate LLVM <literal>.ll</literal> files</entry>
 317               <entry>dynamic</entry>
 318               <entry>-</entry>
 319             </row>
 320             <row>
 321               <entry><option>-keep-s-file</option> or
 322                  <option>-keep-s-files</option></entry>
 323               <entry>retain intermediate <literal>.s</literal> files</entry>
 324               <entry>dynamic</entry>
 325               <entry>-</entry>
 326             </row>
 327             <row>
 328               <entry><option>-keep-tmp-files</option></entry>
 329               <entry>retain all intermediate temporary files</entry>
 330               <entry>dynamic</entry>
 331               <entry>-</entry>
 332             </row>
 333           </tbody>
 334         </tgroup>
 335       </informaltable>
 336     </sect2>
 337
 338     <sect2>
 339       <title>Temporary files</title>
 340
 341       <para><xref linkend="temp-files"/></para>
 342
 343       <informaltable>
 344         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 345           <thead>
 346             <row>
 347               <entry>Flag</entry>
 348               <entry>Description</entry>
 349               <entry>Static/Dynamic</entry>
 350               <entry>Reverse</entry>
 351             </row>
 352           </thead>
 353           <tbody>
 354             <row>
 355               <entry><option>-tmpdir</option></entry>
 356               <entry>set the directory for temporary files</entry>
 357               <entry>dynamic</entry>
 358               <entry>-</entry>
 359             </row>
 360           </tbody>
 361         </tgroup>
 362       </informaltable>
 363     </sect2>
 364
 365     <sect2>
 366       <title>Finding imports</title>
 367
 368       <para><xref linkend="search-path"/></para>
 369
 370       <informaltable>
 371         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 372           <thead>
 373             <row>
 374               <entry>Flag</entry>
 375
 376               <entry>Description</entry>
 377               <entry>Static/Dynamic</entry>
 378               <entry>Reverse</entry>
 379             </row>
 380           </thead>
 381           <tbody>
 382             <row>
 383               <entry><option>-i</option><replaceable>dir1</replaceable>:<replaceable>dir2</replaceable>:...</entry>
 384               <entry>add <replaceable>dir</replaceable>,
 385                   <replaceable>dir2</replaceable>, etc. to import path</entry>
 386               <entry>static/<literal>:set</literal></entry>
 387               <entry>-</entry>
 388             </row>
 389             <row>
 390               <entry><option>-i</option></entry>
 391               <entry>Empty the import directory list</entry>
 392               <entry>static/<literal>:set</literal></entry>
 393               <entry>-</entry>
 394             </row>
 395           </tbody>
 396         </tgroup>
 397       </informaltable>
 398     </sect2>
 399
 400     <sect2>
 401       <title>Interface file options</title>
 402
 403       <para><xref linkend="hi-options"/></para>
 404
 405       <informaltable>
 406         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 407           <thead>
 408             <row>
 409               <entry>Flag</entry>
 410
 411               <entry>Description</entry>
 412               <entry>Static/Dynamic</entry>
 413               <entry>Reverse</entry>
 414             </row>
 415           </thead>
 416           <tbody>
 417             <row>
 418               <entry><option>-ddump-hi</option></entry>
 419               <entry>Dump the new interface to stdout</entry>
 420               <entry>dynamic</entry>
 421               <entry>-</entry>
 422             </row>
 423             <row>
 424               <entry><option>-ddump-hi-diffs</option></entry>
 425               <entry>Show the differences vs. the old interface</entry>
 426               <entry>dynamic</entry>
 427               <entry>-</entry>
 428             </row>
 429             <row>
 430               <entry><option>-ddump-minimal-imports</option></entry>
 431               <entry>Dump a minimal set of imports</entry>
 432               <entry>dynamic</entry>
 433               <entry>-</entry>
 434             </row>
 435             <row>
 436               <entry><option>--show-iface</option> <replaceable>file</replaceable></entry>
 437               <entry>See <xref linkend="modes"/>.</entry>
 438             </row>
 439           </tbody>
 440         </tgroup>
 441       </informaltable>
 442     </sect2>
 443
 444     <sect2>
 445       <title>Recompilation checking</title>
 446
 447       <para><xref linkend="recomp"/></para>
 448
 449       <informaltable>
 450         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 451           <thead>
 452             <row>
 453               <entry>Flag</entry>
 454
 455               <entry>Description</entry>
 456               <entry>Static/Dynamic</entry>
 457               <entry>Reverse</entry>
 458             </row>
 459           </thead>
 460           <tbody>
 461             <row>
 462               <entry><option>-fforce-recomp</option></entry>
 463               <entry>Turn off recompilation checking; implied by any
 464               <option>-ddump-X</option> option</entry>
 465               <entry>dynamic</entry>
 466               <entry><option>-fno-force-recomp</option></entry>
 467             </row>
 468           </tbody>
 469         </tgroup>
 470       </informaltable>
 471     </sect2>
 472
 473     <sect2 id="interactive-mode-options">
 474       <title>Interactive-mode options</title>
 475
 476       <para><xref linkend="ghci-dot-files"/></para>
 477
 478       <informaltable>
 479         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 480           <thead>
 481             <row>
 482               <entry>Flag</entry>
 483               <entry>Description</entry>
 484               <entry>Static/Dynamic</entry>
 485               <entry>Reverse</entry>
 486             </row>
 487           </thead>
 488           <tbody>
 489             <row>
 490               <entry><option>-ignore-dot-ghci</option></entry>
 491               <entry>Disable reading of <filename>.ghci</filename> files</entry>
 492               <entry>static</entry>
 493               <entry>-</entry>
 494             </row>
 495             <row>
 496               <entry><option>-read-dot-ghci</option></entry>
 497               <entry>Enable reading of <filename>.ghci</filename> files</entry>
 498               <entry>static</entry>
 499               <entry>-</entry>
 500             </row>
 501             <row>
 502               <entry><option>-fbreak-on-exception</option></entry>
 503               <entry><link linkend="ghci-debugger-exceptions">Break on any exception thrown</link></entry>
 504               <entry>dynamic</entry>
 505               <entry><option>-fno-break-on-exception</option></entry>
 506             </row>
 507             <row>
 508               <entry><option>-fbreak-on-error</option></entry>
 509               <entry><link linkend="ghci-debugger-exceptions">Break on uncaught exceptions and errors</link></entry>
 510               <entry>dynamic</entry>
 511               <entry><option>-fno-break-on-error</option></entry>
 512             </row>
 513             <row>
 514               <entry><option>-fprint-evld-with-show</option></entry>
 515               <entry><link linkend="breakpoints">Enable usage of Show instances in <literal>:print</literal></link></entry>
 516               <entry>dynamic</entry>
 517               <entry><option>-fno-print-evld-with-show</option></entry>
 518             </row>
 519             <row>
 520               <entry><option>-fprint-bind-result</option></entry>
 521               <entry><link linkend="ghci-stmts">Turn on printing of binding results in GHCi</link></entry>
 522               <entry>dynamic</entry>
 523               <entry><option>-fno-print-bind-result</option></entry>
 524             </row>
 525             <row>
 526               <entry><option>-fno-print-bind-contents</option></entry>
 527               <entry><link linkend="breakpoints">Turn off printing of binding contents in GHCi</link></entry>
 528               <entry>dynamic</entry>
 529               <entry>-</entry>
 530             </row>
 531             <row>
 532               <entry><option>-fno-implicit-import-qualified</option></entry>
 533               <entry><link linkend="ghci-import-qualified">Turn off
 534               implicit qualified import of everything in GHCi</link></entry>
 535               <entry>dynamic</entry>
 536               <entry>-</entry>
 537             </row>
 538
 539           </tbody>
 540         </tgroup>
 541       </informaltable>
 542     </sect2>
 543
 544     <sect2>
 545       <title>Packages</title>
 546
 547       <para><xref linkend="packages"/></para>
 548
 549       <informaltable>
 550         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 551           <thead>
 552             <row>
 553               <entry>Flag</entry>
 554               <entry>Description</entry>
 555               <entry>Static/Dynamic</entry>
 556               <entry>Reverse</entry>
 557             </row>
 558           </thead>
 559           <tbody>
 560             <row>
 561               <entry><option>-package-name</option> <replaceable>P</replaceable></entry>
 562               <entry>Compile to be part of package <replaceable>P</replaceable></entry>
 563               <entry>static</entry>
 564               <entry>-</entry>
 565             </row>
 566             <row>
 567               <entry><option>-package</option> <replaceable>P</replaceable></entry>
 568               <entry>Expose package <replaceable>P</replaceable></entry>
 569               <entry>static/<literal>:set</literal></entry>
 570               <entry>-</entry>
 571             </row>
 572             <row>
 573               <entry><option>-hide-all-packages</option></entry>
 574               <entry>Hide all packages by default</entry>
 575               <entry>static</entry>
 576               <entry>-</entry>
 577             </row>
 578             <row>
 579               <entry><option>-hide-package</option> <replaceable>name</replaceable></entry>
 580               <entry>Hide package <replaceable>P</replaceable></entry>
 581               <entry>static/<literal>:set</literal></entry>
 582               <entry>-</entry>
 583             </row>
 584             <row>
 585               <entry><option>-ignore-package</option> <replaceable>name</replaceable></entry>
 586               <entry>Ignore package <replaceable>P</replaceable></entry>
 587               <entry>static/<literal>:set</literal></entry>
 588               <entry>-</entry>
 589             </row>
 590             <row>
 591               <entry><option>-package-conf</option> <replaceable>file</replaceable></entry>
 592               <entry>Load more packages from <replaceable>file</replaceable></entry>
 593               <entry>static</entry>
 594               <entry>-</entry>
 595             </row>
 596             <row>
 597               <entry><option>-no-user-package-conf</option></entry>
 598               <entry>Don't load the user's package config file.</entry>
 599               <entry>static</entry>
 600               <entry>-</entry>
 601             </row>
 602             <row>
 603               <entry><option>-no-auto-link-packages</option></entry>
 604               <entry>Don't automatically link in the haskell98 package.</entry>
 605               <entry>dynamic</entry>
 606               <entry>-</entry>
 607             </row>
 608           </tbody>
 609         </tgroup>
 610       </informaltable>
 611     </sect2>
 612
 613     <sect2>
 614       <title>Language options</title>
 615
 616       <para>Language options can be enabled either by a command-line option
 617       <option>-Xblah</option>, or by a <literal>{-# LANGUAGE blah #-}</literal>
 618       pragma in the file itself.  See <xref linkend="options-language"/></para>
 619
 620       <informaltable>
 621         <tgroup cols="4" align="left" colsep="1" rowsep="1">
 622           <thead>
 623             <row>
 624               <entry>Flag</entry>
 625               <entry>Description</entry>
 626               <entry>Static/Dynamic</entry>
 627               <entry>Reverse</entry>
 628             </row>
 629           </thead>
 630           <tbody>
 631             <row>
 632               <entry><option>-fglasgow-exts</option></entry>
 633               <entry>Enable most language extensions</entry>
 634               <entry>dynamic</entry>
 635               <entry><option>-fno-glasgow-exts</option></entry>
 636             </row>
 637             <row>
 638               <entry><option>-XOverlappingInstances</option></entry>
 639               <entry>Enable <link linkend="instance-overlap">overlapping instances</link></entry>
 640               <entry>dynamic</entry>
 641               <entry><option>-XNoOverlappingInstances</option></entry>
 642             </row>
 643             <row>
 644               <entry><option>-XIncoherentInstances</option></entry>
 645               <entry>Enable <link linkend="instance-overlap">incoherent instances</link>.
 646               Implies <option>-XOverlappingInstances</option> </entry>
 647               <entry>dynamic</entry>
 648               <entry><option>-XNoIncoherentInstances</option></entry>
 649             </row>
 650             <row>
 651               <entry><option>-XUndecidableInstances</option></entry>
 652               <entry>Enable <link linkend="undecidable-instances">undecidable instances</link></entry>
 653               <entry>dynamic</entry>
 654               <entry><option>-XNoUndecidableInstances</option></entry>
 655             </row>
 656             <row>
 657               <entry><option>-fcontext-stack=N</option><replaceable>n</replaceable></entry>
 658               <entry>set the <link linkend="undecidable-instances">limit for context reduction</link>. Default is 20.</entry>
 659               <entry>dynamic</entry>
 660               <entry></entry>
 661             </row>
 662             <row>
 663               <entry><option>-XArrows</option></entry>
 664               <entry>Enable <link linkend="arrow-notation">arrow
 665               notation</link> extension</entry>
 666               <entry>dynamic</entry>
 667               <entry><option>-XNoArrows</option></entry>
 668             </row>
 669             <row>
 670               <entry><option>-XDisambiguateRecordFields</option></entry>
 671               <entry>Enable <link linkend="disambiguate-fields">record
 672               field disambiguation</link></entry>
 673               <entry>dynamic</entry>
 674               <entry><option>-XNoDisambiguateRecordFields</option></entry>
 675             </row>
 676             <row>
 677               <entry><option>-XForeignFunctionInterface</option></entry>
 678               <entry>Enable <link linkend="ffi">foreign function interface</link> (implied by
 679               <option>-fglasgow-exts</option>)</entry>
 680               <entry>dynamic</entry>
 681               <entry><option>-XNoForeignFunctionInterface</option></entry>
 682             </row>
 683             <row>
 684               <entry><option>-XGenerics</option></entry>
 685               <entry>Enables <option>-XDeriveRepresentable</option> and <option>-XDefaultSignatures</option>.
 686                No longer enables <link linkend="generic-classes">generic classes</link>.
 687                See also GHC's support for
 688                <link linkend="generic-programming">generic programming</link>.</entry>
 689               <entry>dynamic</entry>
 690               <entry><option>-XNoGenerics</option></entry>
 691             </row>
 692             <row>
 693               <entry><option>-XImplicitParams</option></entry>
 694               <entry>Enable <link linkend="implicit-parameters">Implicit Parameters</link>.
 695               Implied by <option>-fglasgow-exts</option>.</entry>
 696               <entry>dynamic</entry>
 697               <entry><option>-XNoImplicitParams</option></entry>
 698             </row>
 699             <row>
 700               <entry><option>-firrefutable-tuples</option></entry>
 701               <entry>Make tuple pattern matching irrefutable</entry>
 702               <entry>dynamic</entry>
 703               <entry><option>-fno-irrefutable-tuples</option></entry>
 704             </row>
 705             <row>
 706               <entry><option>-XNoImplicitPrelude</option></entry>
 707               <entry>Don't implicitly <literal>import Prelude</literal></entry>
 708               <entry>dynamic</entry>
 709               <entry><option>-XImplicitPrelude</option></entry>
 710             </row>
 711             <row>
 712               <entry><option>-XRebindableSyntax</option></entry>
 713               <entry>Employ <link linkend="rebindable-syntax">rebindable syntax</link></entry>
 714               <entry>dynamic</entry>
 715               <entry><option>-XNoRebindableSyntax</option></entry>
 716             </row>
 717             <row>
 718               <entry><option>-XNoMonomorphismRestriction</option></entry>
 719               <entry>Disable the <link linkend="monomorphism">monomorphism restriction</link></entry>
 720               <entry>dynamic</entry>
 721               <entry><option>-XMonomorphismRrestriction</option></entry>
 722             </row>
 723             <row>
 724               <entry><option>-XNoNPlusKPatterns</option></entry>
 725               <entry>Disable support for <literal>n+k</literal> patterns</entry>
 726               <entry>dynamic</entry>
 727               <entry><option>-XNPlusKPatterns</option></entry>
 728             </row>
 729             <row>
 730               <entry><option>-XNoMonoPatBinds</option></entry>
 731               <entry>Make <link linkend="monomorphism">pattern bindings polymorphic</link></entry>
 732               <entry>dynamic</entry>
 733               <entry><option>-XMonoPatBinds</option></entry>
 734             </row>
 735             <row>
 736               <entry><option>-XRelaxedPolyRec</option></entry>
 737               <entry>Relaxed checking for <link linkend="typing-binds">mutually-recursive polymorphic functions</link></entry>
 738               <entry>dynamic</entry>
 739               <entry><option>-XNoRelaxedPolyRec</option></entry>
 740             </row>
 741             <row>
 742               <entry><option>-XExtendedDefaultRules</option></entry>
 743               <entry>Use GHCi's <link linkend="extended-default-rules">extended default rules</link> in a normal module</entry>
 744               <entry>dynamic</entry>
 745               <entry><option>-XNoExtendedDefaultRules</option></entry>
 746             </row>
 747             <row>
 748               <entry><option>-XOverloadedStrings</option></entry>
 749               <entry>Enable <link linkend="overloaded-strings">overloaded string literals</link>.
 750               </entry>
 751               <entry>dynamic</entry>
 752               <entry><option>-XNoOverloadedStrings</option></entry>
 753             </row>
 754             <row>
 755               <entry><option>-XGADTs</option></entry>
 756               <entry>Enable <link linkend="gadt">generalised algebraic data types</link>.
 757               </entry>
 758               <entry>dynamic</entry>
 759               <entry><option>-XNoGADTs</option></entry>
 760             </row>
 761             <row>
 762               <entry><option>-XGADTSyntax</option></entry>
 763               <entry>Enable <link linkend="gadt-style">generalised algebraic data type syntax</link>.
 764               </entry>
 765               <entry>dynamic</entry>
 766               <entry><option>-XNoGADTSyntax</option></entry>
 767             </row>
 768             <row>
 769               <entry><option>-XTypeFamilies</option></entry>
 770               <entry>Enable <link linkend="type-families">type families</link>.</entry>
 771               <entry>dynamic</entry>
 772               <entry><option>-XNoTypeFamilies</option></entry>
 773             </row>
 774             <row>
 775               <entry><option>-XScopedTypeVariables</option></entry>
 776               <entry>Enable <link linkend="scoped-type-variables">lexically-scoped type variables</link>.
 777               Implied by <option>-fglasgow-exts</option>.</entry>
 778               <entry>dynamic</entry>
 779               <entry><option>-XNoScopedTypeVariables</option></entry>
 780             </row>
 781             <row>
 782               <entry><option>-XMonoLocalBinds</option></entry>
 783               <entry>Enable <link linkend="mono-local-binds">do not generalise local bindings</link>.
 784               </entry>
 785               <entry>dynamic</entry>
 786               <entry><option>-XNoMonoLocalBinds</option></entry>
 787             </row>
 788             <row>
 789               <entry><option>-XTemplateHaskell</option></entry>
 790               <entry>Enable <link linkend="template-haskell">Template Haskell</link>.
 791                 No longer implied by <option>-fglasgow-exts</option>.</entry>
 792               <entry>dynamic</entry>
 793               <entry><option>-XNoTemplateHaskell</option></entry>
 794             </row>
 795             <row>
 796               <entry><option>-XQuasiQuotes</option></entry>
 797               <entry>Enable <link linkend="th-quasiquotation">quasiquotation</link>.</entry>
 798               <entry>dynamic</entry>
 799               <entry><option>-XNoQuasiQuotes</option></entry>
 800             </row>
 801             <row>
 802               <entry><option>-XBangPatterns</option></entry>
 803               <entry>Enable <link linkend="bang-patterns">bang patterns</link>.</entry>
 804               <entry>dynamic</entry>
 805               <entry><option>-XNoBangPatterns</option></entry>
 806             </row>
 807             <row>
 808               <entry><option>-XCPP</option></entry>
 809               <entry>Enable the <link linkend="c-pre-processor">C preprocessor</link>.</entry>
 810               <entry>dynamic</entry>
 811               <entry><option>-XNoCPP</option></entry>
 812             </row>
 813             <row>
 814               <entry><option>-XPatternGuards</option></entry>
 815               <entry>Enable <link linkend="pattern-guards">pattern guards</link>.</entry>
 816               <entry>dynamic</entry>
 817               <entry><option>-XNoPatternGuards</option></entry>
 818             </row>
 819             <row>
 820               <entry><option>-XViewPatterns</option></entry>
 821               <entry>Enable <link linkend="view-patterns">view patterns</link>.</entry>
 822               <entry>dynamic</entry>
 823               <entry><option>-XNoViewPatterns</option></entry>
 824             </row>
 825             <row>
 826               <entry><option>-XUnicodeSyntax</option></entry>
 827               <entry>Enable <link linkend="unicode-syntax">unicode syntax</link>.</entry>
 828               <entry>dynamic</entry>
 829               <entry><option>-XNoUnicodeSyntax</option></entry>
 830             </row>
 831             <row>
 832               <entry><option>-XMagicHash</option></entry>
 833               <entry>Allow "#" as a <link linkend="magic-hash">postfix modifier on identifiers</link>.</entry>
 834               <entry>dynamic</entry>
 835               <entry><option>-XNoMagicHash</option></entry>
 836             </row>
 837             <row>
 838               <entry><option>-XExplicitForALl</option></entry>
 839               <entry>Enable <link linkend="explicit-foralls">explicit universal quantification</link>.
 840               Implied by <option>-XScopedTypeVariables</option>,
 841             <option>-XLiberalTypeSynonyms</option>,
 842             <option>-XRank2Types</option>,
 843             <option>-XRankNTypes</option>,
 844             <option>-XPolymorphicComponents</option>,
 845             <option>-XExistentialQuantification</option>
 846               </entry>
 847               <entry>dynamic</entry>
 848               <entry><option>-XNoExplicitForAll</option></entry>
 849             </row>
 850             <row>
 851               <entry><option>-XPolymorphicComponents</option></entry>
 852               <entry>Enable <link linkend="universal-quantification">polymorphic components for data constructors</link>.</entry>
 853               <entry>dynamic</entry>
 854               <entry><option>-XNoPolymorphicComponents</option></entry>
 855             </row>
 856             <row>
 857               <entry><option>-XRank2Types</option></entry>
 858               <entry>Enable <link linkend="universal-quantification">rank-2 types</link>.</entry>
 859               <entry>dynamic</entry>
 860               <entry><option>-XNoRank2Types</option></entry>
 861             </row>
 862             <row>
 863               <entry><option>-XRankNTypes</option></entry>
 864               <entry>Enable <link linkend="universal-quantification">rank-N types</link>.</entry>
 865               <entry>dynamic</entry>
 866               <entry><option>-XNoRankNTypes</option></entry>
 867             </row>
 868             <row>
 869               <entry><option>-XImpredicativeTypes</option></entry>
 870               <entry>Enable <link linkend="impredicative-polymorphism">impredicative types</link>.</entry>
 871               <entry>dynamic</entry>
 872               <entry><option>-XNoImpredicativeTypes</option></entry>
 873             </row>
 874             <row>
 875               <entry><option>-XExistentialQuantification</option></entry>
 876               <entry>Enable <link linkend="existential-quantification">existential quantification</link>.</entry>
 877               <entry>dynamic</entry>
 878               <entry><option>-XNoExistentialQuantification</option></entry>
 879             </row>
 880             <row>
 881               <entry><option>-XKindSignatures</option></entry>
 882               <entry>Enable <link linkend="kinding">kind signatures</link>.</entry>
 883               <entry>dynamic</entry>
 884               <entry><option>-XNoKindSignatures</option></entry>
 885             </row>
 886             <row>
 887               <entry><option>-XEmptyDataDecls</option></entry>
 888               <entry>Enable empty data declarations.</entry>
 889               <entry>dynamic</entry>
 890               <entry><option>-XNoEmptyDataDecls</option></entry>
 891             </row>
 892             <row>
 893               <entry><option>-XParallelListComp</option></entry>
 894               <entry>Enable <link linkend="parallel-list-comprehensions">parallel list comprehensions</link>.</entry>
 895               <entry>dynamic</entry>
 896               <entry><option>-XNoParallelListComp</option></entry>
 897             </row>
 898             <row>
 899               <entry><option>-XTransformListComp</option></entry>
 900               <entry>Enable <link linkend="generalised-list-comprehensions">generalised list comprehensions</link>.</entry>
 901               <entry>dynamic</entry>
 902               <entry><option>-XNoTransformListComp</option></entry>
 903             </row>
 904         <row>
 905               <entry><option>-XMonadComprehensions</option></entry>
 906               <entry>Enable <link linkend="monad-comprehensions">monad comprehensions</link>.</entry>
 907               <entry>dynamic</entry>
 908               <entry><option>-XNoMonadComprehensions</option></entry>
 909             </row>
 910             <row>
 911               <entry><option>-XUnliftedFFITypes</option></entry>
 912               <entry>Enable unlifted FFI types.</entry>
 913               <entry>dynamic</entry>
 914               <entry><option>-XNoUnliftedFFITypes</option></entry>
 915             </row>
 916             <row>
 917               <entry><option>-XLiberalTypeSynonyms</option></entry>
 918               <entry>Enable <link linkend="type-synonyms">liberalised type synonyms</link>.</entry>
 919               <entry>dynamic</entry>
 920               <entry><option>-XNoLiberalTypeSynonyms</option></entry>
 921             </row>
 922             <row>
 923               <entry><option>-XTypeOperators</option></entry>
 924               <entry>Enable type operators.</entry>
 925               <entry>dynamic</entry>
 926               <entry><option>-XNoTypeOperators</option></entry>
 927             </row>
 928             <row>
 929               <entry><option>-XDoRec</option></entry>
 930               <entry>Enable <link linkend="recursive-do-notation">recursive do notation</link>.</entry>
 931               <entry>dynamic</entry>
 932               <entry><option>-XNoDoRec</option></entry>
 933             </row>
 934             <row>
 935               <entry><option>-XRecursiveDo</option></entry>
 936               <entry>Enable <link linkend="mdo-notation">recursive do (mdo) notation</link>. This is deprecated; please use <link linkend="recursive-do-notation">recursive do notation</link> instead.</entry>
 937               <entry>dynamic</entry>
 938               <entry><option>-XNoRecursiveDo</option></entry>
 939             </row>
 940             <row>
 941               <entry><option>-XPArr</option></entry>
 942               <entry>Enable parallel arrays.</entry>
 943               <entry>dynamic</entry>
 944               <entry><option>-XNoPArr</option></entry>
 945             </row>
 946             <row>
 947               <entry><option>-XRecordWildCards</option></entry>
 948               <entry>Enable <link linkend="record-wildcards">record wildcards</link>.</entry>
 949               <entry>dynamic</entry>
 950               <entry><option>-XNoRecordWildCards</option></entry>
 951             </row>
 952             <row>
 953               <entry><option>-XNamedFieldPuns</option></entry>
 954               <entry>Enable <link linkend="record-puns">record puns</link>.</entry>
 955               <entry>dynamic</entry>
 956               <entry><option>-XNoNamedFieldPuns</option></entry>
 957             </row>
 958             <row>
 959               <entry><option>-XDisambiguateRecordFields</option></entry>
 960               <entry>Enable  <link linkend="disambiguate-fields">record field disambiguation</link>. </entry>
 961               <entry>dynamic</entry>
 962               <entry><option>-XNoDisambiguateRecordFields</option></entry>
 963             </row>
 964             <row>
 965               <entry><option>-XUnboxedTuples</option></entry>
 966               <entry>Enable <link linkend="unboxed-tuples">unboxed tuples</link>.</entry>
 967               <entry>dynamic</entry>
 968               <entry><option>-XNoUnboxedTuples</option></entry>
 969             </row>
 970             <row>
 971               <entry><option>-XStandaloneDeriving</option></entry>
 972               <entry>Enable <link linkend="stand-alone-deriving">standalone deriving</link>.</entry>
 973               <entry>dynamic</entry>
 974               <entry><option>-XNoStandaloneDeriving</option></entry>
 975             </row>
 976             <row>
 977               <entry><option>-XDeriveDataTypeable</option></entry>
 978               <entry>Enable <link linkend="deriving-typeable">deriving for the Data and Typeable classes</link>.</entry>
 979               <entry>dynamic</entry>
 980               <entry><option>-XNoDeriveDataTypeable</option></entry>
 981             </row>
 982             <row>
 983               <entry><option>-XDeriveRepresentable</option></entry>
 984               <entry>Enable <link linkend="deriving-typeable">deriving for the Representable0 class</link>.</entry>
 985               <entry>dynamic</entry>
 986               <entry><option>-XNoDeriveRepresentable</option></entry>
 987             </row>
 988             <row>
 989               <entry><option>-XGeneralizedNewtypeDeriving</option></entry>
 990               <entry>Enable <link linkend="newtype-deriving">newtype deriving</link>.</entry>
 991               <entry>dynamic</entry>
 992               <entry><option>-XNoGeneralizedNewtypeDeriving</option></entry>
 993             </row>
 994             <row>
 995               <entry><option>-XTypeSynonymInstances</option></entry>
 996               <entry>Enable <link linkend="flexible-instance-head">type synonyms in instance heads</link>.</entry>
 997               <entry>dynamic</entry>
 998               <entry><option>-XNoTypeSynonymInstances</option></entry>
 999             </row>
1000             <row>
1001               <entry><option>-XFlexibleContexts</option></entry>
1002               <entry>Enable <link linkend="flexible-contexts">flexible contexts</link>.</entry>
1003               <entry>dynamic</entry>
1004               <entry><option>-XNoFlexibleContexts</option></entry>
1005             </row>
1006             <row>
1007               <entry><option>-XFlexibleInstances</option></entry>
1008               <entry>Enable <link linkend="instance-rules">flexible instances</link>.
1009               Implies <option>-XTypeSynonymInstances</option> </entry>
1010               <entry>dynamic</entry>
1011               <entry><option>-XNoFlexibleInstances</option></entry>
1012             </row>
1013             <row>
1014               <entry><option>-XConstrainedClassMethods</option></entry>
1015               <entry>Enable <link linkend="class-method-types">constrained class methods</link>.</entry>
1016               <entry>dynamic</entry>
1017               <entry><option>-XNoConstrainedClassMethods</option></entry>
1018             </row>
1019             <row>
1020               <entry><option>-XDefaultSignatures</option></entry>
1021               <entry>Enable <link linkend="class-default-signatures">default signatures</link>.</entry>
1022               <entry>dynamic</entry>
1023               <entry><option>-XNoDefaultSignatures</option></entry>
1024             </row>
1025             <row>
1026               <entry><option>-XMultiParamTypeClasses</option></entry>
1027               <entry>Enable <link linkend="multi-param-type-classes">multi parameter type classes</link>.</entry>
1028               <entry>dynamic</entry>
1029               <entry><option>-XNoMultiParamTypeClasses</option></entry>
1030             </row>
1031             <row>
1032               <entry><option>-XFunctionalDependencies</option></entry>
1033               <entry>Enable <link linkend="functional-dependencies">functional dependencies</link>.</entry>
1034               <entry>dynamic</entry>
1035               <entry><option>-XNoFunctionalDependencies</option></entry>
1036             </row>
1037             <row>
1038               <entry><option>-XPackageImports</option></entry>
1039               <entry>Enable <link linkend="package-imports">package-qualified imports</link>.</entry>
1040               <entry>dynamic</entry>
1041               <entry><option>-XNoPackageImports</option></entry>
1042             </row>
1043           </tbody>
1044         </tgroup>
1045       </informaltable>
1046     </sect2>
1047
1048     <sect2>
1049       <title>Warnings</title>
1050
1051       <para><xref linkend="options-sanity"/></para>
1052
1053     <informaltable>
1054       <tgroup cols="4" align="left" colsep="1" rowsep="1">
1055         <thead>
1056           <row>
1057             <entry>Flag</entry>
1058             <entry>Description</entry>
1059             <entry>Static/Dynamic</entry>
1060             <entry>Reverse</entry>
1061           </row>
1062         </thead>
1063         <tbody>
1064           <row>
1065             <entry><option>-W</option></entry>
1066             <entry>enable normal warnings</entry>
1067             <entry>dynamic</entry>
1068             <entry><option>-w</option></entry>
1069           </row>
1070           <row>
1071             <entry><option>-w</option></entry>
1072             <entry>disable all warnings</entry>
1073             <entry>dynamic</entry>
1074             <entry>-</entry>
1075           </row>
1076           <row>
1077             <entry><option>-Wall</option></entry>
1078             <entry>enable almost all warnings (details in <xref linkend="options-sanity"/>)</entry>
1079             <entry>dynamic</entry>
1080             <entry><option>-w</option></entry>
1081           </row>
1082           <row>
1083             <entry><option>-Werror</option></entry>
1084             <entry>make warnings fatal</entry>
1085             <entry>dynamic</entry>
1086             <entry>-Wwarn</entry>
1087           </row>
1088           <row>
1089             <entry><option>-Wwarn</option></entry>
1090             <entry>make warnings non-fatal</entry>
1091             <entry>dynamic</entry>
1092             <entry>-Werror</entry>
1093           </row>
1094
1095           <row>
1096             <entry><option>-fwarn-unrecognised-pragmas</option></entry>
1097             <entry>warn about uses of pragmas that GHC doesn't recognise</entry>
1098             <entry>dynamic</entry>
1099             <entry><option>-fno-warn-unrecognised-pragmas</option></entry>
1100           </row>
1101
1102           <row>
1103             <entry><option>-fwarn-warnings-deprecations</option></entry>
1104             <entry>warn about uses of functions &amp; types that have warnings or deprecated pragmas</entry>
1105             <entry>dynamic</entry>
1106             <entry><option>-fno-warn-warnings-deprecations</option></entry>
1107           </row>
1108
1109           <row>
1110             <entry><option>-fwarn-deprecated-flags</option></entry>
1111             <entry>warn about uses of commandline flags that are deprecated</entry>
1112             <entry>dynamic</entry>
1113             <entry><option>-fno-warn-deprecated-flags</option></entry>
1114           </row>
1115
1116           <row>
1117             <entry><option>-fwarn-duplicate-exports</option></entry>
1118             <entry>warn when an entity is exported multiple times</entry>
1119             <entry>dynamic</entry>
1120             <entry><option>-fno-warn-duplicate-exports</option></entry>
1121           </row>
1122
1123           <row>
1124             <entry><option>-fwarn-hi-shadowing</option></entry>
1125             <entry>warn when a <literal>.hi</literal> file in the
1126             current directory shadows a library</entry>
1127             <entry>dynamic</entry>
1128             <entry><option>-fno-warn-hi-shadowing</option></entry>
1129           </row>
1130
1131           <row>
1132             <entry><option>-fwarn-identities</option></entry>
1133             <entry>warn about uses of Prelude numeric conversions that are probably
1134                    the identity (and hence could be omitted)</entry>
1135             <entry>dynamic</entry>
1136             <entry><option>-fno-warn-identities</option></entry>
1137           </row>
1138
1139           <row>
1140             <entry><option>-fwarn-implicit-prelude</option></entry>
1141             <entry>warn when the Prelude is implicitly imported</entry>
1142             <entry>dynamic</entry>
1143             <entry><option>-fno-warn-implicit-prelude</option></entry>
1144           </row>
1145
1146           <row>
1147             <entry><option>-fwarn-incomplete-patterns</option></entry>
1148             <entry>warn when a pattern match could fail</entry>
1149             <entry>dynamic</entry>
1150             <entry><option>-fno-warn-incomplete-patterns</option></entry>
1151           </row>
1152
1153           <row>
1154             <entry><option>-fwarn-incomplete-uni-patterns</option></entry>
1155             <entry>warn when a pattern match in a lambda expression or pattern binding could fail</entry>
1156             <entry>dynamic</entry>
1157             <entry><option>-fno-warn-incomplete-uni-patterns</option></entry>
1158           </row>
1159
1160           <row>
1161             <entry><option>-fwarn-incomplete-record-updates</option></entry>
1162             <entry>warn when a record update could fail</entry>
1163             <entry>dynamic</entry>
1164             <entry><option>-fno-warn-incomplete-record-updates</option></entry>
1165           </row>
1166
1167           <row>
1168             <entry><option>-fwarn-lazy-unlifted-bindings</option></entry>
1169             <entry>warn when a pattern binding looks lazy but must be strict</entry>
1170             <entry>dynamic</entry>
1171             <entry><option>-fno-warn-lazy-unlifted-bindings</option></entry>
1172           </row>
1173
1174           <row>
1175             <entry><option>-fwarn-missing-fields</option></entry>
1176             <entry>warn when fields of a record are uninitialised</entry>
1177             <entry>dynamic</entry>
1178             <entry><option>-fno-warn-missing-fields</option></entry>
1179           </row>
1180
1181           <row>
1182             <entry><option>-fwarn-missing-import-lists</option></entry>
1183             <entry>warn when an import declaration does not explicitly
1184                    list all the names brought into scope</entry>
1185             <entry>dynamic</entry>
1186             <entry><option>-fnowarn-missing-import-lists</option></entry>
1187           </row>
1188
1189           <row>
1190             <entry><option>-fwarn-missing-methods</option></entry>
1191             <entry>warn when class methods are undefined</entry>
1192             <entry>dynamic</entry>
1193             <entry><option>-fno-warn-missing-methods</option></entry>
1194           </row>
1195
1196           <row>
1197             <entry><option>-fwarn-missing-signatures</option></entry>
1198             <entry>warn about top-level functions without signatures</entry>
1199             <entry>dynamic</entry>
1200             <entry><option>-fno-warn-missing-signatures</option></entry>
1201           </row>
1202
1203           <row>
1204             <entry><option>-fwarn-missing-local-sigs</option></entry>
1205             <entry>warn about polymorphic local bindings without signatures</entry>
1206             <entry>dynamic</entry>
1207             <entry><option>-fno-warn-missing-local-sigs</option></entry>
1208           </row>
1209
1210           <row>
1211             <entry><option>-fwarn-name-shadowing</option></entry>
1212             <entry>warn when names are shadowed</entry>
1213             <entry>dynamic</entry>
1214             <entry><option>-fno-warn-name-shadowing</option></entry>
1215           </row>
1216
1217           <row>
1218             <entry><option>-fwarn-orphans</option></entry>
1219             <entry>warn when the module contains <link linkend="orphan-modules">orphan instance declarations
1220             or rewrite rules</link></entry>
1221             <entry>dynamic</entry>
1222             <entry><option>-fno-warn-orphans</option></entry>
1223           </row>
1224
1225           <row>
1226             <entry><option>-fwarn-overlapping-patterns</option></entry>
1227             <entry>warn about overlapping patterns</entry>
1228             <entry>dynamic</entry>
1229             <entry><option>-fno-warn-overlapping-patterns</option></entry>
1230           </row>
1231
1232           <row>
1233             <entry><option>-fwarn-tabs</option></entry>
1234             <entry>warn if there are tabs in the source file</entry>
1235             <entry>dynamic</entry>
1236             <entry><option>-fno-warn-tabs</option></entry>
1237           </row>
1238
1239           <row>
1240             <entry><option>-fwarn-type-defaults</option></entry>
1241             <entry>warn when defaulting happens</entry>
1242             <entry>dynamic</entry>
1243             <entry><option>-fno-warn-type-defaults</option></entry>
1244           </row>
1245
1246           <row>
1247             <entry><option>-fwarn-monomorphism-restriction</option></entry>
1248             <entry>warn when the Monomorphism Restriction is applied</entry>
1249             <entry>dynamic</entry>
1250             <entry><option>-fno-warn-monomorphism-restriction</option></entry>
1251           </row>
1252
1253           <row>
1254             <entry><option>-fwarn-unused-binds</option></entry>
1255             <entry>warn about bindings that are unused</entry>
1256             <entry>dynamic</entry>
1257             <entry><option>-fno-warn-unused-binds</option></entry>
1258           </row>
1259
1260           <row>
1261             <entry><option>-fwarn-unused-imports</option></entry>
1262             <entry>warn about unnecessary imports</entry>
1263             <entry>dynamic</entry>
1264             <entry><option>-fno-warn-unused-imports</option></entry>
1265           </row>
1266
1267           <row>
1268             <entry><option>-fwarn-unused-matches</option></entry>
1269             <entry>warn about variables in patterns that aren't used</entry>
1270             <entry>dynamic</entry>
1271             <entry><option>-fno-warn-unused-matches</option></entry>
1272           </row>
1273
1274           <row>
1275             <entry><option>-fwarn-unused-do-bind</option></entry>
1276             <entry>warn about do bindings that appear to throw away values of types other than <literal>()</literal></entry>
1277             <entry>dynamic</entry>
1278             <entry><option>-fno-warn-unused-do-bind</option></entry>
1279           </row>
1280
1281           <row>
1282             <entry><option>-fwarn-wrong-do-bind</option></entry>
1283             <entry>warn about do bindings that appear to throw away monadic values that you should have bound instead</entry>
1284             <entry>dynamic</entry>
1285             <entry><option>-fno-warn-wrong-do-bind</option></entry>
1286           </row>
1287
1288           </tbody>
1289         </tgroup>
1290       </informaltable>
1291
1292     </sect2>
1293     <sect2>
1294       <title>Optimisation levels</title>
1295
1296       <para><xref linkend="options-optimise"/></para>
1297
1298       <informaltable>
1299         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1300           <thead>
1301             <row>
1302               <entry>Flag</entry>
1303               <entry>Description</entry>
1304               <entry>Static/Dynamic</entry>
1305               <entry>Reverse</entry>
1306             </row>
1307           </thead>
1308           <tbody>
1309             <row>
1310               <entry><option>-O</option></entry>
1311               <entry>Enable default optimisation (level 1)</entry>
1312               <entry>dynamic</entry>
1313               <entry><option>-O0</option></entry>
1314             </row>
1315             <row>
1316               <entry><option>-O</option><replaceable>n</replaceable></entry>
1317               <entry>Set optimisation level <replaceable>n</replaceable></entry>
1318               <entry>dynamic</entry>
1319               <entry><option>-O0</option></entry>
1320             </row>
1321           </tbody>
1322         </tgroup>
1323       </informaltable>
1324
1325     </sect2>
1326     <sect2>
1327       <title>Individual optimisations</title>
1328
1329       <para><xref linkend="options-f"/></para>
1330
1331       <informaltable>
1332         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1333           <thead>
1334             <row>
1335               <entry>Flag</entry>
1336               <entry>Description</entry>
1337               <entry>Static/Dynamic</entry>
1338               <entry>Reverse</entry>
1339             </row>
1340           </thead>
1341           <tbody>
1342             <row>
1343               <entry><option>-fcase-merge</option></entry>
1344               <entry>Enable case-merging. Implied by <option>-O</option>.</entry>
1345               <entry>dynamic</entry>
1346               <entry><option>-fno-case-merge</option></entry>
1347             </row>
1348
1349             <row>
1350               <entry><option>-fdicts-strict</option></entry>
1351               <entry>Make dictionaries strict</entry>
1352               <entry>static</entry>
1353               <entry><option>-fno-dicts-strict</option></entry>
1354             </row>
1355
1356             <row>
1357               <entry><option>-fmethod-sharing</option></entry>
1358               <entry>Share specialisations of overloaded functions (default)</entry>
1359               <entry>dynamic</entry>
1360               <entry><option>-fno-method-sharing</option></entry>
1361             </row>
1362
1363             <row>
1364               <entry><option>-fdo-eta-reduction</option></entry>
1365               <entry>Enable eta-reduction. Implied by <option>-O</option>.</entry>
1366               <entry>dynamic</entry>
1367               <entry><option>-fno-do-eta-reduction</option></entry>
1368             </row>
1369
1370             <row>
1371               <entry><option>-fdo-lambda-eta-expansion</option></entry>
1372               <entry>Enable lambda eta-reduction</entry>
1373               <entry>dynamic</entry>
1374               <entry><option>-fno-do-lambda-eta-expansion</option></entry>
1375             </row>
1376
1377             <row>
1378               <entry><option>-fexcess-precision</option></entry>
1379               <entry>Enable excess intermediate precision</entry>
1380               <entry>dynamic</entry>
1381               <entry><option>-fno-excess-precision</option></entry>
1382             </row>
1383
1384             <row>
1385               <entry><option>-fignore-asserts</option></entry>
1386               <entry>Ignore assertions in the source</entry>
1387               <entry>dynamic</entry>
1388               <entry><option>-fno-ignore-asserts</option></entry>
1389             </row>
1390
1391             <row>
1392               <entry><option>-fignore-interface-pragmas</option></entry>
1393               <entry>Ignore pragmas in interface files</entry>
1394               <entry>dynamic</entry>
1395               <entry><option>-fno-ignore-interface-pragmas</option></entry>
1396             </row>
1397
1398             <row>
1399               <entry><option>-fomit-interface-pragmas</option></entry>
1400               <entry>Don't generate interface pragmas</entry>
1401               <entry>dynamic</entry>
1402               <entry><option>-fno-omit-interface-pragmas</option></entry>
1403             </row>
1404
1405             <row>
1406               <entry><option>-fmax-worker-args</option></entry>
1407               <entry>If a worker has that many arguments, none will be
1408                 unpacked anymore (default: 10)</entry>
1409               <entry>static</entry>
1410               <entry>-</entry>
1411             </row>
1412
1413             <row>
1414               <entry><option>-fsimplifier-phases</option></entry>
1415               <entry>Set the number of phases for the simplifier (default 2).
1416               Ignored with <option>-O0</option>.</entry>
1417               <entry>dynamic</entry>
1418               <entry>-</entry>
1419             </row>
1420
1421             <row>
1422               <entry><option>-fmax-simplifier-iterations</option></entry>
1423               <entry>Set the max iterations for the simplifier</entry>
1424               <entry>dynamic</entry>
1425               <entry>-</entry>
1426             </row>
1427
1428             <row>
1429               <entry><option>-fno-state-hack</option></entry>
1430               <entry>Turn off the "state hack" whereby any lambda with a real-world state token
1431               as argument is considered to be single-entry.  Hence OK to inline things inside it.</entry>
1432               <entry>static</entry>
1433               <entry>-</entry>
1434             </row>
1435
1436             <row>
1437               <entry><option>-fcse</option></entry>
1438               <entry>Turn on common sub-expression elimination. Implied by <option>-O</option>.</entry>
1439               <entry>dynamic</entry>
1440               <entry>-fno-cse</entry>
1441             </row>
1442
1443             <row>
1444               <entry><option>-fspecialise</option></entry>
1445               <entry>Turn on specialisation of overloaded functions. Implied by <option>-O</option>.</entry>
1446               <entry>dynamic</entry>
1447               <entry>-fno-specialise</entry>
1448             </row>
1449
1450             <row>
1451               <entry><option>-ffull-laziness</option></entry>
1452               <entry>Turn on full laziness (floating bindings outwards). Implied by <option>-O</option>.</entry>
1453               <entry>dynamic</entry>
1454               <entry>-fno-full-laziness</entry>
1455             </row>
1456
1457             <row>
1458               <entry><option>-ffloat-in</option></entry>
1459               <entry>Turn on the float-in transformation. Implied by <option>-O</option>.</entry>
1460               <entry>dynamic</entry>
1461               <entry>-fno-float-in</entry>
1462             </row>
1463
1464             <row>
1465               <entry><option>-fenable-rewrite-rules</option></entry>
1466               <entry>Switch on all rewrite rules (including rules
1467               generated by automatic specialisation of overloaded functions).
1468               Implied by <option>-O</option>. </entry>
1469               <entry>dynamic</entry>
1470               <entry><option>-fno-enable-rewrite-rules</option></entry>
1471             </row>
1472
1473             <row>
1474               <entry><option>-fstrictness</option></entry>
1475               <entry>Turn on strictness analysis. Implied by <option>-O</option>.</entry>
1476               <entry>dynamic</entry>
1477               <entry>-fno-strictness</entry>
1478             </row>
1479
1480             <row>
1481               <entry><option>-fstrictness=before</option>=<replaceable>n</replaceable></entry>
1482               <entry>Run an additional strictness analysis before simplifier
1483 phase <replaceable>n</replaceable></entry>
1484               <entry>dynamic</entry>
1485               <entry>-</entry>
1486             </row>
1487
1488             <row>
1489               <entry><option>-fspec-constr</option></entry>
1490               <entry>Turn on the SpecConstr transformation. Implied by <option>-O2</option>.</entry>
1491               <entry>dynamic</entry>
1492               <entry>-fno-spec-constr</entry>
1493             </row>
1494
1495             <row>
1496               <entry><option>-fspec-constr-threshold</option>=<replaceable>n</replaceable></entry>
1497               <entry>Set the size threshold for the SpecConstr transformation to <replaceable>n</replaceable> (default: 200)</entry>
1498               <entry>static</entry>
1499               <entry><option>-fno-spec-constr-threshold</option></entry>
1500             </row>
1501
1502             <row>
1503               <entry><option>-fspec-constr-count</option>=<replaceable>n</replaceable></entry>
1504               <entry>Set to <replaceable>n</replaceable> (default: 3) the maximum number of
1505                 specialisations that will be created for any one function
1506                 by the SpecConstr transformation</entry>
1507               <entry>static</entry>
1508               <entry><option>-fno-spec-constr-count</option></entry>
1509             </row>
1510
1511             <row>
1512               <entry><option>-fliberate-case</option></entry>
1513               <entry>Turn on the liberate-case transformation. Implied by <option>-O2</option>.</entry>
1514               <entry>dynamic</entry>
1515               <entry>-fno-liberate-case</entry>
1516             </row>
1517
1518             <row>
1519               <entry><option>-fstatic-argument-transformation</option></entry>
1520               <entry>Turn on the static argument transformation. Implied by <option>-O2</option>.</entry>
1521               <entry>dynamic</entry>
1522               <entry>-fno-static-argument-transformation</entry>
1523             </row>
1524
1525             <row>
1526               <entry><option>-fliberate-case-threshold</option>=<replaceable>n</replaceable></entry>
1527               <entry>Set the size threshold for the liberate-case transformation to <replaceable>n</replaceable> (default: 200)</entry>
1528               <entry>static</entry>
1529               <entry><option>-fno-liberate-case-threshold</option></entry>
1530             </row>
1531
1532             <row>
1533               <entry><option>-funbox-strict-fields</option></entry>
1534               <entry>Flatten strict constructor fields</entry>
1535               <entry>dynamic</entry>
1536               <entry><option>-fno-unbox-strict-fields</option></entry>
1537             </row>
1538
1539             <row>
1540               <entry><option>-funfolding-creation-threshold</option></entry>
1541               <entry>Tweak unfolding settings</entry>
1542               <entry>static</entry>
1543               <entry><option>-fno-unfolding-creation-threshold</option></entry>
1544             </row>
1545
1546             <row>
1547               <entry><option>-funfolding-fun-discount</option></entry>
1548               <entry>Tweak unfolding settings</entry>
1549               <entry>static</entry>
1550               <entry><option>-fno-unfolding-fun-discount</option></entry>
1551             </row>
1552
1553             <row>
1554               <entry><option>-funfolding-keeness-factor</option></entry>
1555               <entry>Tweak unfolding settings</entry>
1556               <entry>static</entry>
1557               <entry><option>-fno-unfolding-keeness-factor</option></entry>
1558             </row>
1559
1560             <row>
1561               <entry><option>-funfolding-use-threshold</option></entry>
1562               <entry>Tweak unfolding settings</entry>
1563               <entry>static</entry>
1564               <entry><option>-fno-unfolding-use-threshold</option></entry>
1565             </row>
1566
1567             <row>
1568               <entry><option>-fno-pre-inlining</option></entry>
1569               <entry>Turn off pre-inlining</entry>
1570               <entry>static</entry>
1571               <entry>-</entry>
1572             </row>
1573
1574             <row>
1575               <entry><option>-fno-opt-coercion</option></entry>
1576               <entry>Turn off the coercion optimiser</entry>
1577               <entry>static</entry>
1578               <entry>-</entry>
1579             </row>
1580
1581             <row>
1582               <entry><option>-feager-blackholing</option></entry>
1583               <entry>Turn on <link linkend="parallel-compile-options">eager blackholing</link></entry>
1584               <entry>dynamic</entry>
1585               <entry>-</entry>
1586             </row>
1587           </tbody>
1588         </tgroup>
1589       </informaltable>
1590     </sect2>
1591
1592     <sect2>
1593       <title>Profiling options</title>
1594
1595       <para><xref linkend="profiling"/></para>
1596
1597       <informaltable>
1598         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1599           <thead>
1600             <row>
1601               <entry>Flag</entry>
1602               <entry>Description</entry>
1603               <entry>Static/Dynamic</entry>
1604               <entry>Reverse</entry>
1605             </row>
1606           </thead>
1607           <tbody>
1608             <row>
1609               <entry><option>-auto</option></entry>
1610               <entry>Auto-add <literal>_scc_</literal>s to all
1611               exported functions not marked INLINE</entry>
1612               <entry>dynamic</entry>
1613               <entry><option>-no-auto</option></entry>
1614             </row>
1615             <row>
1616               <entry><option>-auto-all</option></entry>
1617               <entry>Auto-add <literal>_scc_</literal>s to all
1618               top-level functions not marked INLINE</entry>
1619               <entry>dynamic</entry>
1620               <entry><option>-no-auto-all</option></entry>
1621             </row>
1622             <row>
1623               <entry><option>-caf-all</option></entry>
1624               <entry>Auto-add <literal>_scc_</literal>s to all CAFs</entry>
1625               <entry>dynamic</entry>
1626               <entry><option>-no-caf-all</option></entry>
1627             </row>
1628             <row>
1629               <entry><option>-prof</option></entry>
1630               <entry>Turn on profiling</entry>
1631               <entry>static</entry>
1632               <entry>-</entry>
1633             </row>
1634             <row>
1635               <entry><option>-ticky</option></entry>
1636               <entry><link linkend="ticky-ticky">Turn on ticky-ticky profiling</link></entry>
1637               <entry>static</entry>
1638               <entry>-</entry>
1639             </row>
1640           </tbody>
1641         </tgroup>
1642       </informaltable>
1643     </sect2>
1644
1645     <sect2>
1646       <title>Program coverage options</title>
1647
1648       <para><xref linkend="hpc"/></para>
1649
1650       <informaltable>
1651         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1652           <thead>
1653             <row>
1654               <entry>Flag</entry>
1655               <entry>Description</entry>
1656               <entry>Static/Dynamic</entry>
1657               <entry>Reverse</entry>
1658             </row>
1659           </thead>
1660           <tbody>
1661             <row>
1662               <entry><option>-fhpc</option></entry>
1663               <entry>Turn on Haskell program coverage instrumentation</entry>
1664               <entry>static</entry>
1665               <entry><option>-</option></entry>
1666             </row>
1667             <row>
1668               <entry><option>-hpcdir dir</option></entry>
1669               <entry>Directory to deposit .mix files during compilation (default is .hpc)</entry>
1670               <entry>dynamic</entry>
1671               <entry><option>-</option></entry>
1672             </row>
1673           </tbody>
1674         </tgroup>
1675       </informaltable>
1676     </sect2>
1677
1678     <sect2>
1679       <title>Haskell pre-processor options</title>
1680
1681       <para><xref linkend="pre-processor"/></para>
1682
1683       <informaltable>
1684         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1685           <thead>
1686             <row>
1687               <entry>Flag</entry>
1688               <entry>Description</entry>
1689               <entry>Static/Dynamic</entry>
1690               <entry>Reverse</entry>
1691             </row>
1692           </thead>
1693           <tbody>
1694             <row>
1695               <entry><option>-F</option></entry>
1696               <entry>
1697                   Enable the use of a pre-processor
1698                   (set with <option>-pgmF</option>)
1699               </entry>
1700               <entry>dynamic</entry>
1701               <entry>-</entry>
1702             </row>
1703           </tbody>
1704         </tgroup>
1705       </informaltable>
1706     </sect2>
1707
1708     <sect2>
1709       <title>C pre-processor options</title>
1710
1711       <para><xref linkend="c-pre-processor"/></para>
1712
1713       <informaltable>
1714         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1715           <thead>
1716             <row>
1717               <entry>Flag</entry>
1718               <entry>Description</entry>
1719               <entry>Static/Dynamic</entry>
1720               <entry>Reverse</entry>
1721             </row>
1722           </thead>
1723           <tbody>
1724             <row>
1725               <entry><option>-cpp</option></entry>
1726               <entry>Run the C pre-processor on Haskell source files</entry>
1727               <entry>dynamic</entry>
1728               <entry>-</entry>
1729             </row>
1730             <row>
1731               <entry><option>-D</option><replaceable>symbol</replaceable><optional>=<replaceable>value</replaceable></optional></entry>
1732               <entry>Define a symbol in the C pre-processor</entry>
1733               <entry>dynamic</entry>
1734               <entry><option>-U</option><replaceable>symbol</replaceable></entry>
1735             </row>
1736             <row>
1737               <entry><option>-U</option><replaceable>symbol</replaceable></entry>
1738               <entry>Undefine a symbol in the C pre-processor</entry>
1739               <entry>dynamic</entry>
1740               <entry>-</entry>
1741             </row>
1742             <row>
1743               <entry><option>-I</option><replaceable>dir</replaceable></entry>
1744               <entry>Add <replaceable>dir</replaceable> to the
1745               directory search list for <literal>#include</literal> files</entry>
1746               <entry>dynamic</entry>
1747               <entry>-</entry>
1748             </row>
1749           </tbody>
1750         </tgroup>
1751       </informaltable>
1752     </sect2>
1753
1754     <sect2>
1755       <title>Code generation options</title>
1756
1757       <para><xref linkend="options-codegen"/></para>
1758
1759       <informaltable>
1760         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1761           <thead>
1762             <row>
1763               <entry>Flag</entry>
1764               <entry>Description</entry>
1765               <entry>Static/Dynamic</entry>
1766               <entry>Reverse</entry>
1767             </row>
1768           </thead>
1769           <tbody>
1770             <row>
1771               <entry><option>-fasm</option></entry>
1772               <entry>Use the native code generator</entry>
1773               <entry>dynamic</entry>
1774               <entry>-fllvm</entry>
1775             </row>
1776             <row>
1777               <entry><option>-fllvm</option></entry>
1778               <entry>Compile via LLVM</entry>
1779               <entry>dynamic</entry>
1780               <entry>-fasm</entry>
1781             </row>
1782             <row>
1783               <entry><option>-fno-code</option></entry>
1784               <entry>Omit code generation</entry>
1785               <entry>dynamic</entry>
1786               <entry>-</entry>
1787             </row>
1788             <row>
1789               <entry><option>-fbyte-code</option></entry>
1790               <entry>Generate byte-code</entry>
1791               <entry>dynamic</entry>
1792               <entry>-</entry>
1793             </row>
1794             <row>
1795               <entry><option>-fobject-code</option></entry>
1796               <entry>Generate object code</entry>
1797               <entry>dynamic</entry>
1798               <entry>-</entry>
1799             </row>
1800           </tbody>
1801         </tgroup>
1802       </informaltable>
1803     </sect2>
1804
1805     <sect2>
1806       <title>Linking options</title>
1807
1808       <para><xref linkend="options-linker"/></para>
1809
1810       <informaltable>
1811         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1812           <thead>
1813             <row>
1814               <entry>Flag</entry>
1815               <entry>Description</entry>
1816               <entry>Static/Dynamic</entry>
1817               <entry>Reverse</entry>
1818             </row>
1819           </thead>
1820           <tbody>
1821             <row>
1822               <entry><option>-shared</option></entry>
1823               <entry>Generate a shared library (as opposed to an executable)</entry>
1824               <entry>dynamic</entry>
1825               <entry>-</entry>
1826             </row>
1827             <row>
1828               <entry><option>-fPIC</option></entry>
1829               <entry>Generate position-independent code (where available)</entry>
1830               <entry>static</entry>
1831               <entry>-</entry>
1832             </row>
1833             <row>
1834               <entry><option>-dynamic</option></entry>
1835               <entry>Use dynamic Haskell libraries (if available)</entry>
1836               <entry>static</entry>
1837               <entry>-</entry>
1838             </row>
1839             <row>
1840               <entry><option>-dynload</option></entry>
1841               <entry>Selects one of a number of modes for finding shared
1842                 libraries at runtime.</entry>
1843               <entry>static</entry>
1844               <entry>-</entry>
1845             </row>
1846             <row>
1847               <entry><option>-framework</option> <replaceable>name</replaceable></entry>
1848               <entry>On Darwin/MacOS X only, link in the framework <replaceable>name</replaceable>.
1849                 This option corresponds to the <option>-framework</option> option for Apple's Linker.</entry>
1850               <entry>dynamic</entry>
1851               <entry>-</entry>
1852             </row>
1853             <row>
1854               <entry><option>-framework-path</option> <replaceable>name</replaceable></entry>
1855               <entry>On Darwin/MacOS X only, add <replaceable>dir</replaceable> to the list of
1856                 directories searched for frameworks.
1857                 This option corresponds to the <option>-F</option> option for Apple's Linker.</entry>
1858               <entry>dynamic</entry>
1859               <entry>-</entry>
1860             </row>
1861             <row>
1862               <entry><option>-l</option><replaceable>lib</replaceable></entry>
1863               <entry>Link in library <replaceable>lib</replaceable></entry>
1864               <entry>dynamic</entry>
1865               <entry>-</entry>
1866             </row>
1867             <row>
1868               <entry><option>-L</option><replaceable>dir</replaceable></entry>
1869               <entry>Add <replaceable>dir</replaceable> to the list of
1870               directories searched for libraries</entry>
1871               <entry>dynamic</entry>
1872               <entry>-</entry>
1873             </row>
1874             <row>
1875               <entry><option>-main-is</option></entry>
1876               <entry>Set main module and function</entry>
1877               <entry>dynamic</entry>
1878               <entry>-</entry>
1879             </row>
1880             <row>
1881               <entry><option>--mk-dll</option></entry>
1882               <entry>DLL-creation mode (Windows only)</entry>
1883               <entry>dynamic</entry>
1884               <entry>-</entry>
1885             </row>
1886             <row>
1887               <entry><option>-no-hs-main</option></entry>
1888               <entry>Don't assume this program contains <literal>main</literal></entry>
1889               <entry>dynamic</entry>
1890               <entry>-</entry>
1891             </row>
1892             <row>
1893               <entry><option>-rtsopts</option>, <option>-rtsopts={none,some,all}</option></entry>
1894               <entry>Control whether the RTS behaviour can be tweaked via command-line
1895           flags and the <literal>GHCRTS</literal> environment
1896           variable. Using <literal>none</literal> means no RTS flags can be given; <literal>some</literal> means only a minimum of safe options can be given (the default), and <literal>all</literal> (or no argument at all) means that all RTS flags are permitted.</entry>
1897               <entry>dynamic</entry>
1898               <entry>-</entry>
1899             </row>
1900             <row>
1901               <entry><option>-with-rtsopts=<replaceable>opts</replaceable></option></entry>
1902               <entry>Set the default RTS options to
1903           <replaceable>opts</replaceable>.</entry>
1904               <entry>dynamic</entry>
1905               <entry>-</entry>
1906             </row>
1907             <row>
1908               <entry><option>-no-link</option></entry>
1909               <entry>Omit linking</entry>
1910               <entry>dynamic</entry>
1911               <entry>-</entry>
1912             </row>
1913             <row>
1914               <entry><option>-split-objs</option></entry>
1915               <entry>Split objects (for libraries)</entry>
1916               <entry>dynamic</entry>
1917               <entry>-</entry>
1918             </row>
1919             <row>
1920               <entry><option>-static</option></entry>
1921               <entry>Use static Haskell libraries</entry>
1922               <entry>static</entry>
1923               <entry>-</entry>
1924             </row>
1925             <row>
1926               <entry><option>-threaded</option></entry>
1927               <entry>Use the threaded runtime</entry>
1928               <entry>static</entry>
1929               <entry>-</entry>
1930             </row>
1931             <row>
1932               <entry><option>-debug</option></entry>
1933               <entry>Use the debugging runtime</entry>
1934               <entry>static</entry>
1935               <entry>-</entry>
1936             </row>
1937             <row>
1938               <entry><option>-eventlog</option></entry>
1939               <entry>Enable runtime event tracing</entry>
1940               <entry>static</entry>
1941               <entry>-</entry>
1942             </row>
1943             <row>
1944               <entry><option>-fno-gen-manifest</option></entry>
1945               <entry>Do not generate a manifest file (Windows only)</entry>
1946               <entry>dynamic</entry>
1947               <entry>-</entry>
1948             </row>
1949             <row>
1950               <entry><option>-fno-embed-manifest</option></entry>
1951               <entry>Do not embed the manifest in the executable (Windows only)</entry>
1952               <entry>dynamic</entry>
1953               <entry>-</entry>
1954             </row>
1955             <row>
1956               <entry><option>-fno-shared-implib</option></entry>
1957               <entry>Don't generate an import library for a DLL (Windows only)</entry>
1958               <entry>dynamic</entry>
1959               <entry>-</entry>
1960             </row>
1961             <row>
1962               <entry><option>-dylib-install-name</option> <replaceable>path</replaceable></entry>
1963               <entry>Set the install name (via <literal>-install_name</literal> passed to Apple's
1964               linker), specifying the full install path of the library file. Any libraries
1965               or executables that link with it later will pick up that path as their
1966               runtime search location for it. (Darwin/MacOS X only)</entry>
1967               <entry>dynamic</entry>
1968               <entry>-</entry>
1969             </row>
1970           </tbody>
1971         </tgroup>
1972       </informaltable>
1973     </sect2>
1974
1975     <sect2>
1976       <title>Replacing phases</title>
1977
1978       <para><xref linkend="replacing-phases"/></para>
1979
1980       <informaltable>
1981         <tgroup cols="4" align="left" colsep="1" rowsep="1">
1982           <thead>
1983             <row>
1984               <entry>Flag</entry>
1985               <entry>Description</entry>
1986               <entry>Static/Dynamic</entry>
1987               <entry>Reverse</entry>
1988             </row>
1989           </thead>
1990           <tbody>
1991             <row>
1992               <entry><option>-pgmL</option> <replaceable>cmd</replaceable></entry>
1993               <entry>Use <replaceable>cmd</replaceable> as the literate pre-processor</entry>
1994               <entry>dynamic</entry>
1995               <entry>-</entry>
1996             </row>
1997             <row>
1998               <entry><option>-pgmP</option> <replaceable>cmd</replaceable></entry>
1999               <entry>Use <replaceable>cmd</replaceable> as the C
2000               pre-processor (with <option>-cpp</option> only)</entry>
2001               <entry>dynamic</entry>
2002               <entry>-</entry>
2003             </row>
2004             <row>
2005               <entry><option>-pgmc</option> <replaceable>cmd</replaceable></entry>
2006               <entry>Use <replaceable>cmd</replaceable> as the C compiler</entry>
2007               <entry>dynamic</entry>
2008               <entry>-</entry>
2009             <row>
2010               <entry><option>-pgmlo</option> <replaceable>cmd</replaceable></entry>
2011               <entry>Use <replaceable>cmd</replaceable> as the LLVM optimiser</entry>
2012               <entry>dynamic</entry>
2013               <entry>-</entry>
2014             </row>
2015             <row>
2016               <entry><option>-pgmlc</option> <replaceable>cmd</replaceable></entry>
2017               <entry>Use <replaceable>cmd</replaceable> as the LLVM compiler</entry>
2018               <entry>dynamic</entry>
2019               <entry>-</entry>
2020             </row>
2021             </row>
2022             <row>
2023               <entry><option>-pgms</option> <replaceable>cmd</replaceable></entry>
2024               <entry>Use <replaceable>cmd</replaceable> as the splitter</entry>
2025               <entry>dynamic</entry>
2026               <entry>-</entry>
2027             </row>
2028             <row>
2029               <entry><option>-pgma</option> <replaceable>cmd</replaceable></entry>
2030               <entry>Use <replaceable>cmd</replaceable> as the assembler</entry>
2031               <entry>dynamic</entry>
2032               <entry>-</entry>
2033             </row>
2034             <row>
2035               <entry><option>-pgml</option> <replaceable>cmd</replaceable></entry>
2036               <entry>Use <replaceable>cmd</replaceable> as the linker</entry>
2037               <entry>dynamic</entry>
2038               <entry>-</entry>
2039             </row>
2040             <row>
2041               <entry><option>-pgmdll</option> <replaceable>cmd</replaceable></entry>
2042               <entry>Use <replaceable>cmd</replaceable> as the DLL generator</entry>
2043               <entry>dynamic</entry>
2044               <entry>-</entry>
2045             </row>
2046             <row>
2047               <entry><option>-pgmF</option> <replaceable>cmd</replaceable></entry>
2048               <entry>Use <replaceable>cmd</replaceable> as the pre-processor
2049               (with <option>-F</option> only)</entry>
2050               <entry>dynamic</entry>
2051               <entry>-</entry>
2052             </row>
2053             <row>
2054               <entry><option>-pgmwindres</option> <replaceable>cmd</replaceable></entry>
2055               <entry>Use <replaceable>cmd</replaceable> as the program for
2056                 embedding manifests on Windows.</entry>
2057               <entry>dynamic</entry>
2058               <entry>-</entry>
2059             </row>
2060           </tbody>
2061         </tgroup>
2062       </informaltable>
2063       <indexterm><primary><option>-pgmL</option></primary></indexterm>
2064       <indexterm><primary><option>-pgmP</option></primary></indexterm>
2065       <indexterm><primary><option>-pgmc</option></primary></indexterm>
2066       <indexterm><primary><option>-pgmlo</option></primary></indexterm>
2067       <indexterm><primary><option>-pgmlc</option></primary></indexterm>
2068       <indexterm><primary><option>-pgma</option></primary></indexterm>
2069       <indexterm><primary><option>-pgml</option></primary></indexterm>
2070       <indexterm><primary><option>-pgmdll</option></primary></indexterm>
2071       <indexterm><primary><option>-pgmF</option></primary></indexterm>
2072
2073     </sect2>
2074
2075     <sect2>
2076       <title>Forcing options to particular phases</title>
2077
2078       <para><xref linkend="forcing-options-through"/></para>
2079
2080       <informaltable>
2081         <tgroup cols="4" align="left" colsep="1" rowsep="1">
2082           <thead>
2083             <row>
2084               <entry>Flag</entry>
2085               <entry>Description</entry>
2086               <entry>Static/Dynamic</entry>
2087               <entry>Reverse</entry>
2088             </row>
2089           </thead>
2090           <tbody>
2091             <row>
2092               <entry><option>-optL</option> <replaceable>option</replaceable></entry>
2093               <entry>pass <replaceable>option</replaceable> to the literate pre-processor</entry>
2094               <entry>dynamic</entry>
2095               <entry>-</entry>
2096             </row>
2097             <row>
2098               <entry><option>-optP</option> <replaceable>option</replaceable></entry>
2099               <entry>pass <replaceable>option</replaceable> to cpp (with
2100               <option>-cpp</option> only)</entry>
2101               <entry>dynamic</entry>
2102               <entry>-</entry>
2103             </row>
2104             <row>
2105               <entry><option>-optF</option> <replaceable>option</replaceable></entry>
2106               <entry>pass <replaceable>option</replaceable> to the
2107               custom pre-processor</entry>
2108               <entry>dynamic</entry>
2109               <entry>-</entry>
2110             </row>
2111             <row>
2112               <entry><option>-optc</option> <replaceable>option</replaceable></entry>
2113               <entry>pass <replaceable>option</replaceable> to the C compiler</entry>
2114               <entry>dynamic</entry>
2115               <entry>-</entry>
2116             </row>
2117             <row>
2118               <entry><option>-optlo</option> <replaceable>option</replaceable></entry>
2119               <entry>pass <replaceable>option</replaceable> to the LLVM optimiser</entry>
2120               <entry>dynamic</entry>
2121               <entry>-</entry>
2122             </row>
2123             <row>
2124               <entry><option>-optlc</option> <replaceable>option</replaceable></entry>
2125               <entry>pass <replaceable>option</replaceable> to the LLVM compiler</entry>
2126               <entry>dynamic</entry>
2127               <entry>-</entry>
2128             </row>
2129             <row>
2130               <entry><option>-optm</option> <replaceable>option</replaceable></entry>
2131               <entry>pass <replaceable>option</replaceable> to the mangler</entry>
2132               <entry>dynamic</entry>
2133               <entry>-</entry>
2134             </row>
2135             <row>
2136               <entry><option>-opta</option> <replaceable>option</replaceable></entry>
2137               <entry>pass <replaceable>option</replaceable> to the assembler</entry>
2138               <entry>dynamic</entry>
2139               <entry>-</entry>
2140             </row>
2141             <row>
2142               <entry><option>-optl</option> <replaceable>option</replaceable></entry>
2143               <entry>pass <replaceable>option</replaceable> to the linker</entry>
2144               <entry>dynamic</entry>
2145               <entry>-</entry>
2146             </row>
2147             <row>
2148               <entry><option>-optdll</option> <replaceable>option</replaceable></entry>
2149               <entry>pass <replaceable>option</replaceable> to the DLL generator</entry>
2150               <entry>dynamic</entry>
2151               <entry>-</entry>
2152             </row>
2153             <row>
2154               <entry><option>-optwindres</option> <replaceable>option</replaceable></entry>
2155               <entry>pass <replaceable>option</replaceable> to <literal>windres</literal>.</entry>
2156               <entry>dynamic</entry>
2157               <entry>-</entry>
2158             </row>
2159           </tbody>
2160         </tgroup>
2161       </informaltable>
2162     </sect2>
2163
2164     <sect2>
2165       <title>Platform-specific options</title>
2166
2167       <para><xref linkend="options-platform"/></para>
2168
2169       <informaltable>
2170         <tgroup cols="4" align="left" colsep="1" rowsep="1">
2171           <thead>
2172             <row>
2173               <entry>Flag</entry>
2174               <entry>Description</entry>
2175               <entry>Static/Dynamic</entry>
2176               <entry>Reverse</entry>
2177             </row>
2178           </thead>
2179           <tbody>
2180             <row>
2181               <entry><option>-msse2</option></entry>
2182               <entry>(x86 only) Use SSE2 for floating point</entry>
2183               <entry>dynamic</entry>
2184               <entry>-</entry>
2185             </row>
2186           </tbody>
2187           <tbody>
2188             <row>
2189               <entry><option>-monly-[432]-regs</option></entry>
2190               <entry>(x86 only) give some registers back to the C compiler</entry>
2191               <entry>dynamic</entry>
2192               <entry>-</entry>
2193             </row>
2194           </tbody>
2195         </tgroup>
2196       </informaltable>
2197     </sect2>
2198
2199
2200     <sect2>
2201       <title>External core file options</title>
2202
2203       <para><xref linkend="ext-core"/></para>
2204
2205       <informaltable>
2206         <tgroup cols="4" align="left" colsep="1" rowsep="1">
2207           <thead>
2208             <row>
2209               <entry>Flag</entry>
2210               <entry>Description</entry>
2211               <entry>Static/Dynamic</entry>
2212               <entry>Reverse</entry>
2213             </row>
2214           </thead>
2215           <tbody>
2216             <row>
2217               <entry><option>-fext-core</option></entry>
2218               <entry>Generate <filename>.hcr</filename> external Core files</entry>
2219               <entry>dynamic</entry>
2220               <entry>-</entry>
2221             </row>
2222           </tbody>
2223         </tgroup>
2224       </informaltable>
2225     </sect2>
2226
2227
2228     <sect2>
2229       <title>Compiler debugging options</title>
2230
2231       <para><xref linkend="options-debugging"/></para>
2232
2233       <informaltable>
2234         <tgroup cols="4" align="left" colsep="1" rowsep="1">
2235           <thead>
2236             <row>
2237               <entry>Flag</entry>
2238               <entry>Description</entry>
2239               <entry>Static/Dynamic</entry>
2240               <entry>Reverse</entry>
2241             </row>
2242           </thead>
2243           <tbody>
2244             <row>
2245               <entry><option>-dcore-lint</option></entry>
2246               <entry>Turn on internal sanity checking</entry>
2247               <entry>dynamic</entry>
2248               <entry>-</entry>
2249             </row>
2250             <row>
2251               <entry><option>-ddump-asm</option></entry>
2252               <entry>Dump assembly</entry>
2253               <entry>dynamic</entry>
2254               <entry>-</entry>
2255             </row>
2256             <row>
2257               <entry><option>-ddump-bcos</option></entry>
2258               <entry>Dump interpreter byte code</entry>
2259               <entry>dynamic</entry>
2260               <entry>-</entry>
2261             </row>
2262             <row>
2263               <entry><option>-ddump-cmm</option></entry>
2264               <entry>Dump C-- output</entry>
2265               <entry>dynamic</entry>
2266               <entry>-</entry>
2267             </row>
2268             <row>
2269               <entry><option>-ddump-core-stats</option></entry>
2270               <entry>Print a one-line summary of the size of the Core program
2271                      at the end of the optimisation pipeline </entry>
2272               <entry>dynamic</entry>
2273               <entry>-</entry>
2274             </row>
2275             <row>
2276               <entry><option>-ddump-cpranal</option></entry>
2277               <entry>Dump output from CPR analysis</entry>
2278               <entry>dynamic</entry>
2279               <entry>-</entry>
2280             </row>
2281             <row>
2282               <entry><option>-ddump-cse</option></entry>
2283               <entry>Dump CSE output</entry>
2284               <entry>dynamic</entry>
2285               <entry>-</entry>
2286             </row>
2287             <row>
2288               <entry><option>-ddump-deriv</option></entry>
2289               <entry>Dump deriving output</entry>
2290               <entry>dynamic</entry>
2291               <entry>-</entry>
2292             </row>
2293             <row>
2294               <entry><option>-ddump-ds</option></entry>
2295               <entry>Dump desugarer output</entry>
2296               <entry>dynamic</entry>
2297               <entry>-</entry>
2298             </row>
2299             <row>
2300               <entry><option>-ddump-flatC</option></entry>
2301               <entry>Dump &ldquo;flat&rdquo; C</entry>
2302               <entry>dynamic</entry>
2303               <entry>-</entry>
2304             </row>
2305             <row>
2306               <entry><option>-ddump-foreign</option></entry>
2307               <entry>Dump <literal>foreign export</literal> stubs</entry>
2308               <entry>dynamic</entry>
2309               <entry>-</entry>
2310             </row>
2311             <row>
2312               <entry><option>-ddump-hpc</option></entry>
2313               <entry>Dump after instrumentation for program coverage</entry>
2314               <entry>dynamic</entry>
2315               <entry>-</entry>
2316             </row>
2317             <row>
2318               <entry><option>-ddump-inlinings</option></entry>
2319               <entry>Dump inlining info</entry>
2320               <entry>dynamic</entry>
2321               <entry>-</entry>
2322             </row>
2323             <row>
2324               <entry><option>-ddump-llvm</option></entry>
2325               <entry>Dump LLVM intermediate code</entry>
2326               <entry>dynamic</entry>
2327               <entry>-</entry>
2328             </row>
2329             <row>
2330               <entry><option>-ddump-occur-anal</option></entry>
2331               <entry>Dump occurrence analysis output</entry>
2332               <entry>dynamic</entry>
2333               <entry>-</entry>
2334             </row>
2335             <row>
2336               <entry><option>-ddump-opt-cmm</option></entry>
2337               <entry>Dump the results of C-- to C-- optimising passes</entry>
2338               <entry>dynamic</entry>
2339               <entry>-</entry>
2340             </row>
2341             <row>
2342               <entry><option>-ddump-parsed</option></entry>
2343               <entry>Dump parse tree</entry>
2344               <entry>dynamic</entry>
2345               <entry>-</entry>
2346             </row>
2347             <row>
2348               <entry><option>-ddump-prep</option></entry>
2349               <entry>Dump prepared core</entry>
2350               <entry>dynamic</entry>
2351               <entry>-</entry>
2352             </row>
2353             <row>
2354               <entry><option>-ddump-rn</option></entry>
2355               <entry>Dump renamer output</entry>
2356               <entry>dynamic</entry>
2357               <entry>-</entry>
2358             </row>
2359             <row>
2360               <entry><option>-ddump-rule-firings</option></entry>
2361               <entry>Dump rule firing info</entry>
2362               <entry>dynamic</entry>
2363               <entry>-</entry>
2364             </row>
2365             <row>
2366               <entry><option>-ddump-rule-rewrites</option></entry>
2367               <entry>Dump detailed rule firing info</entry>
2368               <entry>dynamic</entry>
2369               <entry>-</entry>
2370             </row>
2371       <row>
2372         <entry><option>-ddump-rules</option></entry>
2373         <entry>Dump rules</entry>
2374         <entry>dynamic</entry>
2375         <entry>-</entry>
2376       </row>
2377       <row>
2378         <entry><option>-ddump-vect</option></entry>
2379         <entry>Dump vectoriser input and output</entry>
2380         <entry>dynamic</entry>
2381         <entry>-</entry>
2382       </row>
2383             <row>
2384               <entry><option>-ddump-simpl</option></entry>
2385               <entry>Dump final simplifier output</entry>
2386               <entry>dynamic</entry>
2387               <entry>-</entry>
2388             </row>
2389             <row>
2390               <entry><option>-ddump-simpl-phases</option></entry>
2391               <entry>Dump output from each simplifier phase</entry>
2392               <entry>dynamic</entry>
2393               <entry>-</entry>
2394             </row>
2395             <row>
2396               <entry><option>-ddump-simpl-iterations</option></entry>
2397               <entry>Dump output from each simplifier iteration</entry>
2398               <entry>dynamic</entry>
2399               <entry>-</entry>
2400             </row>
2401             <row>
2402               <entry><option>-ddump-spec</option></entry>
2403               <entry>Dump specialiser output</entry>
2404               <entry>dynamic</entry>
2405               <entry>-</entry>
2406             </row>
2407             <row>
2408               <entry><option>-ddump-splices</option></entry>
2409               <entry>Dump TH spliced expressions, and what they evaluate to</entry>
2410               <entry>dynamic</entry>
2411               <entry>-</entry>
2412             </row>
2413             <row>
2414               <entry><option>-ddump-stg</option></entry>
2415               <entry>Dump final STG</entry>
2416               <entry>dynamic</entry>
2417               <entry>-</entry>
2418             </row>
2419             <row>
2420               <entry><option>-ddump-stranal</option></entry>
2421               <entry>Dump strictness analyser output</entry>
2422               <entry>dynamic</entry>
2423               <entry>-</entry>
2424             </row>
2425             <row>
2426               <entry><option>-ddump-tc</option></entry>
2427               <entry>Dump typechecker output</entry>
2428               <entry>dynamic</entry>
2429               <entry>-</entry>
2430             </row>
2431             <row>
2432               <entry><option>-ddump-types</option></entry>
2433               <entry>Dump type signatures</entry>
2434               <entry>dynamic</entry>
2435               <entry>-</entry>
2436             </row>
2437             <row>
2438               <entry><option>-ddump-worker-wrapper</option></entry>
2439               <entry>Dump worker-wrapper output</entry>
2440               <entry>dynamic</entry>
2441               <entry>-</entry>
2442             </row>
2443             <row>
2444               <entry><option>-ddump-if-trace</option></entry>
2445               <entry>Trace interface files</entry>
2446               <entry>dynamic</entry>
2447               <entry>-</entry>
2448             </row>
2449       <row>
2450         <entry><option>-ddump-tc-trace</option></entry>
2451         <entry>Trace typechecker</entry>
2452         <entry>dynamic</entry>
2453         <entry>-</entry>
2454       </row>
2455       <row>
2456         <entry><option>-ddump-vt-trace</option></entry>
2457         <entry>Trace vectoriser</entry>
2458         <entry>dynamic</entry>
2459         <entry>-</entry>
2460       </row>
2461             <row>
2462               <entry><option>-ddump-rn-trace</option></entry>
2463               <entry>Trace renamer</entry>
2464               <entry>dynamic</entry>
2465               <entry>-</entry>
2466             </row>
2467             <row>
2468               <entry><option>-ddump-rn-stats</option></entry>
2469               <entry>Renamer stats</entry>
2470               <entry>dynamic</entry>
2471               <entry>-</entry>
2472             </row>
2473             <row>
2474               <entry><option>-ddump-simpl-stats</option></entry>
2475               <entry>Dump simplifier stats</entry>
2476               <entry>dynamic</entry>
2477               <entry>-</entry>
2478             </row>
2479             <row>
2480               <entry><option>-dno-debug-output</option></entry>
2481               <entry>Suppress unsolicited debugging output</entry>
2482               <entry>static</entry>
2483               <entry>-</entry>
2484             </row>
2485             <row>
2486               <entry><option>-dppr-debug</option></entry>
2487               <entry>Turn on debug printing (more verbose)</entry>
2488               <entry>static</entry>
2489               <entry>-</entry>
2490             </row>
2491             <row>
2492               <entry><option>-dppr-noprags</option></entry>
2493               <entry>Don't output pragma info in dumps</entry>
2494               <entry>static</entry>
2495               <entry>-</entry>
2496             </row>
2497             <row>
2498               <entry><option>-dppr-user-length</option></entry>
2499               <entry>Set the depth for printing expressions in error msgs</entry>
2500               <entry>static</entry>
2501               <entry>-</entry>
2502             </row>
2503             <row>
2504               <entry><option>-dppr-colsNNN</option></entry>
2505               <entry>Set the width of debugging output. For example <option>-dppr-cols200</option></entry>
2506               <entry>static</entry>
2507               <entry>-</entry>
2508             </row>
2509             <row>
2510               <entry><option>-dppr-case-as-let</option></entry>
2511               <entry>Print single alternative case expressions as strict lets.</entry>
2512               <entry>static</entry>
2513               <entry>-</entry>
2514             </row>
2515             <row>
2516               <entry><option>-dsuppress-all</option></entry>
2517               <entry>In core dumps, suppress everything that is suppressable.</entry>
2518               <entry>static</entry>
2519               <entry>-</entry>
2520             </row>
2521             <row>
2522               <entry><option>-dsuppress-uniques</option></entry>
2523               <entry>Suppress the printing of uniques in debug output (easier to use <command>diff</command>)</entry>
2524               <entry>static</entry>
2525               <entry>-</entry>
2526             </row>
2527             <row>
2528               <entry><option>-dsuppress-idinfo</option></entry>
2529               <entry>Suppress extended information about identifiers where they are bound</entry>
2530               <entry>static</entry>
2531               <entry>-</entry>
2532             </row>
2533             <row>
2534               <entry><option>-dsuppress-module-prefixes</option></entry>
2535               <entry>Suppress the printing of module qualification prefixes</entry>
2536               <entry>static</entry>
2537               <entry>-</entry>
2538             </row>
2539             <row>
2540               <entry><option>-dsuppress-type-signatures</option></entry>
2541               <entry>Suppress type signatures</entry>
2542               <entry>static</entry>
2543               <entry>-</entry>
2544             </row>
2545             <row>
2546               <entry><option>-dsuppress-type-applications</option></entry>
2547               <entry>Suppress type applications</entry>
2548               <entry>static</entry>
2549               <entry>-</entry>
2550             </row>
2551             <row>
2552               <entry><option>-dsuppress-coercions</option></entry>
2553               <entry>Suppress the printing of coercions in Core dumps to make them shorter</entry>
2554               <entry>static</entry>
2555               <entry>-</entry>
2556             </row>
2557             <row>
2558               <entry><option>-dsource-stats</option></entry>
2559               <entry>Dump haskell source stats</entry>
2560               <entry>dynamic</entry>
2561               <entry>-</entry>
2562             </row>
2563             <row>
2564               <entry><option>-dcmm-lint</option></entry>
2565               <entry>C-- pass sanity checking</entry>
2566               <entry>dynamic</entry>
2567               <entry>-</entry>
2568             </row>
2569             <row>
2570               <entry><option>-dstg-lint</option></entry>
2571               <entry>STG pass sanity checking</entry>
2572               <entry>dynamic</entry>
2573               <entry>-</entry>
2574             </row>
2575             <row>
2576               <entry><option>-dstg-stats</option></entry>
2577               <entry>Dump STG stats</entry>
2578               <entry>dynamic</entry>
2579               <entry>-</entry>
2580             </row>
2581             <row>
2582               <entry><option>-dverbose-core2core</option></entry>
2583               <entry>Show output from each core-to-core pass</entry>
2584               <entry>dynamic</entry>
2585               <entry>-</entry>
2586             </row>
2587             <row>
2588               <entry><option>-dverbose-stg2stg</option></entry>
2589               <entry>Show output from each STG-to-STG pass</entry>
2590               <entry>dynamic</entry>
2591               <entry>-</entry>
2592             </row>
2593             <row>
2594               <entry><option>-dshow-passes</option></entry>
2595               <entry>Print out each pass name as it happens</entry>
2596               <entry>dynamic</entry>
2597               <entry>-</entry>
2598             </row>
2599             <row>
2600               <entry><option>-dfaststring-stats</option></entry>
2601               <entry>Show statistics for fast string usage when finished</entry>
2602               <entry>dynamic</entry>
2603               <entry>-</entry>
2604             </row>
2605           </tbody>
2606         </tgroup>
2607       </informaltable>
2608     </sect2>
2609
2610     <sect2>
2611       <title>Misc compiler options</title>
2612
2613       <informaltable>
2614         <tgroup cols="4" align="left" colsep="1" rowsep="1">
2615           <thead>
2616             <row>
2617               <entry>Flag</entry>
2618               <entry>Description</entry>
2619               <entry>Static/Dynamic</entry>
2620               <entry>Reverse</entry>
2621             </row>
2622           </thead>
2623           <tbody>
2624             <row>
2625               <entry><option>-fno-hi-version-check</option></entry>
2626               <entry>Don't complain about <literal>.hi</literal> file mismatches</entry>
2627               <entry>static</entry>
2628               <entry>-</entry>
2629             </row>
2630             <row>
2631               <entry><option>-dno-black-holing</option></entry>
2632               <entry>Turn off black holing (probably doesn't work)</entry>
2633               <entry>static</entry>
2634               <entry>-</entry>
2635             </row>
2636             <row>
2637               <entry><option>-fhistory-size</option></entry>
2638               <entry>Set simplification history size</entry>
2639               <entry>static</entry>
2640               <entry>-</entry>
2641             </row>
2642             <row>
2643               <entry><option>-funregisterised</option></entry>
2644               <entry>Unregisterised compilation (use <option>-unreg</option> instead)</entry>
2645               <entry>static</entry>
2646               <entry>-</entry>
2647             </row>
2648             <row>
2649               <entry><option>-fno-ghci-sandbox</option></entry>
2650               <entry>Turn off the GHCi sandbox. Means computations are run in teh main thread, rather than a forked thread.</entry>
2651               <entry>dynamic</entry>
2652               <entry>-</entry>
2653             </row>
2654           </tbody>
2655         </tgroup>
2656       </informaltable>
2657     </sect2>
2658   </sect1>
2659
2660
2661 <!--
2662 Still to document:
2663
2664 Misc:
2665   ,  ( "H"                 , HasArg (setHeapSize . fromIntegral . decodeSize) )
2666
2667   -Bdir
2668 -->
2669
2670 <!-- Emacs stuff:
2671      ;;; Local Variables: ***
2672      ;;; sgml-parent-document: ("users_guide.xml" "book" "chapter") ***
2673      ;;; End: ***
2674  -->