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