1 <?xml version="1.0" encoding="iso-8859-1"?>
2 <sect1 id="flag-reference">
3 <title>Flag reference</title>
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
11 <title>Help and verbosity options</title>
13 <para><xref linkend="options-help"/></para>
16 <tgroup cols="4" align="left" colsep="1" rowsep="1">
20 <entry>Description</entry>
21 <entry>Static/Dynamic</entry>
22 <entry>Reverse</entry>
27 <entry><option>-?</option></entry>
33 <entry><option>-help</option></entry>
39 <entry><option>-n</option></entry>
40 <entry>do a dry run</entry>
41 <entry>dynamic</entry>
45 <entry><option>-v</option></entry>
46 <entry>verbose mode (equivalent to <option>-v3</option>)</entry>
47 <entry>dynamic</entry>
51 <entry><option>-v</option><replaceable>n</replaceable></entry>
52 <entry>set verbosity level</entry>
53 <entry>dynamic</entry>
57 <entry><option>-V</option></entry>
58 <entry>display GHC version</entry>
63 <entry><option>––supported-languages</option></entry>
64 <entry>display the supported language extensions</entry>
69 <entry><option>––info</option></entry>
70 <entry>display information about the compiler</entry>
75 <entry><option>––version</option></entry>
76 <entry>display GHC version</entry>
81 <entry><option>––numeric-version</option></entry>
82 <entry>display GHC version (numeric only)</entry>
87 <entry><option>––print-libdir</option></entry>
88 <entry>display GHC library directory</entry>
93 <entry><option>-ferror-spans</option></entry>
94 <entry>output full span in error messages</entry>
99 <entry><option>-H</option><replaceable>size</replaceable></entry>
100 <entry>Set the minimum heap size to <replaceable>size</replaceable></entry>
101 <entry>static</entry>
105 <entry><option>-Rghc-timing</option></entry>
106 <entry>Summarise timing stats for GHC (same as <literal>+RTS -tstderr</literal>)</entry>
107 <entry>static</entry>
116 <title>Which phases to run</title>
118 <para><xref linkend="options-order"/></para>
121 <tgroup cols="4" align="left" colsep="1" rowsep="1">
125 <entry>Description</entry>
126 <entry>Static/Dynamic</entry>
127 <entry>Reverse</entry>
132 <entry><option>-E</option></entry>
133 <entry>Stop after preprocessing (<literal>.hspp</literal> file)</entry>
138 <entry><option>-C</option></entry>
139 <entry>Stop after generating C (<literal>.hc</literal> file)</entry>
144 <entry><option>-S</option></entry>
145 <entry>Stop after generating assembly (<literal>.s</literal> file)</entry>
150 <entry><option>-c</option></entry>
151 <entry>Do not link</entry>
152 <entry>dynamic</entry>
156 <entry><option>-x</option> <replaceable>suffix</replaceable></entry>
157 <entry>Override default behaviour for source files</entry>
158 <entry>static</entry>
167 <title>Alternative modes of operation</title>
169 <para><xref linkend="modes"/></para>
172 <tgroup cols="4" align="left" colsep="1" rowsep="1">
176 <entry>Description</entry>
177 <entry>Static/Dynamic</entry>
178 <entry>Reverse</entry>
183 <entry><option>--interactive</option></entry>
184 <entry>Interactive mode - normally used by just running <command>ghci</command>;
185 see <xref linkend="ghci"/> for details.</entry>
190 <entry><option>--make</option></entry>
191 <entry>Build a multi-module Haskell program, automatically figuring out dependencies. Likely to be much easier, and faster, than using <command>make</command>;
192 see <xref linkend="make-mode"/> for details..</entry>
197 <entry><option>-e <replaceable>expr</replaceable></option></entry>
198 <entry>Evaluate <replaceable>expr</replaceable>;
199 see <xref linkend="eval-mode"/> for details.</entry>
204 <entry><option>-M</option></entry>
205 <entry>Generate dependency information suitable for use in a <filename>Makefile</filename>;
206 see <xref linkend="makefile-dependencies"/> for details.</entry>
216 <title>Redirecting output</title>
218 <para><xref linkend="options-output"/></para>
221 <tgroup cols="4" align="left" colsep="1" rowsep="1">
225 <entry>Description</entry>
226 <entry>Static/Dynamic</entry>
227 <entry>Reverse</entry>
232 <entry><option>-hcsuf</option> <replaceable>suffix</replaceable></entry>
233 <entry>set the suffix to use for intermediate C files</entry>
234 <entry>dynamic</entry>
238 <entry><option>-hidir</option> <replaceable>dir</replaceable></entry>
239 <entry>set directory for interface files</entry>
240 <entry>dynamic</entry>
244 <entry><option>-hisuf</option> <replaceable>suffix</replaceable></entry>
245 <entry>set the suffix to use for interface files</entry>
246 <entry>dynamic</entry>
250 <entry><option>-o</option> <replaceable>filename</replaceable></entry>
251 <entry>set output filename</entry>
252 <entry>dynamic</entry>
256 <entry><option>-odir</option> <replaceable>dir</replaceable></entry>
257 <entry>set output directory</entry>
258 <entry>dynamic</entry>
262 <entry><option>-ohi</option> <replaceable>filename</replaceable></entry>
263 <entry>set the filename in which to put the interface</entry>
264 <entry>dynamic</entry>
268 <entry><option>-osuf</option> <replaceable>suffix</replaceable></entry>
269 <entry>set the output file suffix</entry>
270 <entry>dynamic</entry>
274 <entry><option>-stubdir</option> <replaceable>dir</replaceable></entry>
275 <entry>redirect FFi stub files</entry>
276 <entry>dynamic</entry>
285 <title>Keeping intermediate files</title>
287 <para><xref linkend="keeping-intermediates"/></para>
290 <tgroup cols="4" align="left" colsep="1" rowsep="1">
294 <entry>Description</entry>
295 <entry>Static/Dynamic</entry>
296 <entry>Reverse</entry>
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>
308 <entry><option>-keep-s-file</option> or
309 <option>-keep-s-files</option></entry>
310 <entry>retain intermediate <literal>.s</literal> files</entry>
311 <entry>dynamic</entry>
315 <entry><option>-keep-raw-s-file</option> or
316 <option>-keep-raw-s-files</option></entry>
317 <entry>retain intermediate <literal>.raw_s</literal> files</entry>
318 <entry>dynamic</entry>
322 <entry><option>-keep-tmp-files</option></entry>
323 <entry>retain all intermediate temporary files</entry>
324 <entry>dynamic</entry>
333 <title>Temporary files</title>
335 <para><xref linkend="temp-files"/></para>
338 <tgroup cols="4" align="left" colsep="1" rowsep="1">
342 <entry>Description</entry>
343 <entry>Static/Dynamic</entry>
344 <entry>Reverse</entry>
349 <entry><option>-tmpdir</option></entry>
350 <entry>set the directory for temporary files</entry>
351 <entry>dynamic</entry>
360 <title>Finding imports</title>
362 <para><xref linkend="search-path"/></para>
365 <tgroup cols="4" align="left" colsep="1" rowsep="1">
370 <entry>Description</entry>
371 <entry>Static/Dynamic</entry>
372 <entry>Reverse</entry>
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>
384 <entry><option>-i</option></entry>
385 <entry>Empty the import directory list</entry>
386 <entry>static/<literal>:set</literal></entry>
395 <title>Interface file options</title>
397 <para><xref linkend="hi-options"/></para>
400 <tgroup cols="4" align="left" colsep="1" rowsep="1">
405 <entry>Description</entry>
406 <entry>Static/Dynamic</entry>
407 <entry>Reverse</entry>
412 <entry><option>-ddump-hi</option></entry>
413 <entry>Dump the new interface to stdout</entry>
414 <entry>dynamic</entry>
418 <entry><option>-ddump-hi-diffs</option></entry>
419 <entry>Show the differences vs. the old interface</entry>
420 <entry>dynamic</entry>
424 <entry><option>-ddump-minimal-imports</option></entry>
425 <entry>Dump a minimal set of imports</entry>
426 <entry>dynamic</entry>
430 <entry><option>--show-iface</option> <replaceable>file</replaceable></entry>
431 <entry>Read the interface in
432 <replaceable>file</replaceable> and dump it as text to
433 <literal>stdout</literal>.</entry>
443 <title>Recompilation checking</title>
445 <para><xref linkend="recomp"/></para>
448 <tgroup cols="4" align="left" colsep="1" rowsep="1">
453 <entry>Description</entry>
454 <entry>Static/Dynamic</entry>
455 <entry>Reverse</entry>
460 <entry><option>-fforce-recomp</option></entry>
461 <entry>Turn off recompilation checking; implied by any
462 <option>-ddump-X</option> option</entry>
463 <entry>dynamic</entry>
464 <entry><option>-fno-force-recomp</option></entry>
472 <title>Interactive-mode options</title>
474 <para><xref linkend="ghci-dot-files"/></para>
477 <tgroup cols="4" align="left" colsep="1" rowsep="1">
481 <entry>Description</entry>
482 <entry>Static/Dynamic</entry>
483 <entry>Reverse</entry>
488 <entry><option>-ignore-dot-ghci</option></entry>
489 <entry>Disable reading of <filename>.ghci</filename> files</entry>
490 <entry>static</entry>
494 <entry><option>-read-dot-ghci</option></entry>
495 <entry>Enable reading of <filename>.ghci</filename> files</entry>
496 <entry>static</entry>
500 <entry><option>-fdebugging</option></entry>
501 <entry>Generate bytecode enabled for debugging</entry>
502 <entry>dynamic</entry>
506 <entry><option>-fno-debugging</option></entry>
507 <entry>Do not include debugging information in bytecodes</entry>
508 <entry>dynamic</entry>
512 <entry><option>-fno-print-bind-result</option></entry>
513 <entry><link linkend="ghci-stmts">Turn off printing of binding results in GHCi</link></entry>
514 <entry>dynamic</entry>
523 <title>Packages</title>
525 <para><xref linkend="packages"/></para>
528 <tgroup cols="4" align="left" colsep="1" rowsep="1">
532 <entry>Description</entry>
533 <entry>Static/Dynamic</entry>
534 <entry>Reverse</entry>
539 <entry><option>-package-name</option> <replaceable>P</replaceable></entry>
540 <entry>Compile to be part of package <replaceable>P</replaceable></entry>
541 <entry>dynamic</entry>
545 <entry><option>-package</option> <replaceable>P</replaceable></entry>
546 <entry>Expose package <replaceable>P</replaceable></entry>
547 <entry>static/<literal>:set</literal></entry>
551 <entry><option>-hide-all-packages</option></entry>
552 <entry>Hide all packages by default</entry>
553 <entry>static</entry>
557 <entry><option>-hide-package</option> <replaceable>name</replaceable></entry>
558 <entry>Hide package <replaceable>P</replaceable></entry>
559 <entry>static/<literal>:set</literal></entry>
563 <entry><option>-ignore-package</option> <replaceable>name</replaceable></entry>
564 <entry>Ignore package <replaceable>P</replaceable></entry>
565 <entry>static/<literal>:set</literal></entry>
569 <entry><option>-package-conf</option> <replaceable>file</replaceable></entry>
570 <entry>Load more packages from <replaceable>file</replaceable></entry>
571 <entry>static</entry>
575 <entry><option>-no-user-package-conf</option></entry>
576 <entry>Don't load the user's package config file.</entry>
577 <entry>static</entry>
586 <title>Language options</title>
588 <para><xref linkend="options-language"/></para>
591 <tgroup cols="4" align="left" colsep="1" rowsep="1">
595 <entry>Description</entry>
596 <entry>Static/Dynamic</entry>
597 <entry>Reverse</entry>
602 <entry><option>-fglasgow-exts</option></entry>
603 <entry>Enable most language extensions</entry>
604 <entry>dynamic</entry>
605 <entry><option>-fno-glasgow-exts</option></entry>
608 <entry><option>-XOverlappingInstances</option></entry>
609 <entry>Enable <link linkend="instance-overlap">overlapping instances</link></entry>
610 <entry>dynamic</entry>
611 <entry><option>-XNoOverlappingInstances</option></entry>
614 <entry><option>-XIncoherentInstances</option></entry>
615 <entry>Enable <link linkend="instance-overlap">incoherent instances</link>.
616 Implies <option>-XOverlappingInstances</option> </entry>
617 <entry>dynamic</entry>
618 <entry><option>-XNoIncoherentInstances</option></entry>
621 <entry><option>-XUndecidableInstances</option></entry>
622 <entry>Enable <link linkend="undecidable-instances">undecidable instances</link></entry>
623 <entry>dynamic</entry>
624 <entry><option>-XNoUndecidableInstances</option></entry>
627 <entry><option>-fcontext-stack=N</option><replaceable>n</replaceable></entry>
628 <entry>set the <link linkend="undecidable-instances">limit for context reduction</link>. Default is 20.</entry>
629 <entry>dynamic</entry>
633 <entry><option>-XArrows</option></entry>
634 <entry>Enable <link linkend="arrow-notation">arrow
635 notation</link> extension</entry>
636 <entry>dynamic</entry>
637 <entry><option>-XNoArrows</option></entry>
640 <entry><option>-fdisambiguate-record-fields</option></entry>
641 <entry>Enable <link linkend="disambiguate-fields">record
642 field disambiguation</link></entry>
643 <entry>dynamic</entry>
644 <entry><option>-fno-disambiguate-record-fields</option></entry>
647 <entry><option>-XForeignFunctionInterface</option></entry>
648 <entry>Enable <link linkend="ffi">foreign function interface</link> (implied by
649 <option>-fglasgow-exts</option>)</entry>
650 <entry>dynamic</entry>
651 <entry><option>-XNoForeignFunctionInterface</option></entry>
654 <entry><option>-XGenerics</option></entry>
655 <entry>Enable <link linkend="generic-classes">generic classes</link></entry>
656 <entry>dynamic</entry>
657 <entry><option>-XNoGenerics</option></entry>
660 <entry><option>-XImplicitParams</option></entry>
661 <entry>Enable <link linkend="implicit-parameters">Implicit Parameters</link>.
662 Implied by <option>-fglasgow-exts</option>.</entry>
663 <entry>dynamic</entry>
664 <entry><option>-XNoImplicitParams</option></entry>
667 <entry><option>-firrefutable-tuples</option></entry>
668 <entry>Make tuple pattern matching irrefutable</entry>
669 <entry>dynamic</entry>
670 <entry><option>-fno-irrefutable-tuples</option></entry>
673 <entry><option>-XNoImplicitPrelude</option></entry>
674 <entry>Don't implicitly <literal>import Prelude</literal></entry>
675 <entry>dynamic</entry>
676 <entry><option>-XImplicitPrelude</option></entry>
679 <entry><option>-XNoMonomorphismRestriction</option></entry>
680 <entry>Disable the <link linkend="monomorphism">monomorphism restriction</link></entry>
681 <entry>dynamic</entry>
682 <entry><option>-XMonomorphismRrestriction</option></entry>
685 <entry><option>-XNoMonoPatBinds</option></entry>
686 <entry>Make <link linkend="monomorphism">pattern bindings polymorphic</link></entry>
687 <entry>dynamic</entry>
688 <entry><option>-XMonoPatBinds</option></entry>
691 <entry><option>-XRelaxedPolyRed</option></entry>
692 <entry>Relaxed checking for <link linkend="typing-binds">mutually-recursive polymorphic functions</link></entry>
693 <entry>dynamic</entry>
694 <entry><option>-XNoRelaxedPolyRec</option></entry>
697 <entry><option>-XExtendedDefaultRules</option></entry>
698 <entry>Use GHCi's <link linkend="extended-default-rules">extended default rules</link> in a normal module</entry>
699 <entry>dynamic</entry>
700 <entry><option>-XNoExtendedDefaultRules</option></entry>
703 <entry><option>-XOverloadedStrings</option></entry>
704 <entry>Enable <link linkend="overloaded-strings">overloaded string literals</link>.
706 <entry>dynamic</entry>
707 <entry><option>-XNoOverloadedStrings</option></entry>
710 <entry><option>-XGADTs</option></entry>
711 <entry>Enable <link linkend="gadts">generalised algebraic data types</link>.
713 <entry>dynamic</entry>
714 <entry><option>-XNoGADTs</option></entry>
717 <entry><option>-XTypeFamilies</option></entry>
718 <entry>Enable <link linkend="type-families">type families</link>.</entry>
719 <entry>dynamic</entry>
720 <entry><option>-XNoTypeFamilies</option></entry>
723 <entry><option>-XScopedTypeVariables</option></entry>
724 <entry>Enable <link linkend="scoped-type-variables">lexically-scoped type variables</link>.
725 Implied by <option>-fglasgow-exts</option>.</entry>
726 <entry>dynamic</entry>
727 <entry><option>-XNoScopedTypeVariables</option></entry>
730 <entry><option>-XTemplateHaskell</option></entry>
731 <entry>Enable <link linkend="template-haskell">Template Haskell</link>.
732 No longer implied by <option>-fglasgow-exts</option>.</entry>
733 <entry>dynamic</entry>
734 <entry><option>-XNoTemplateHaskell</option></entry>
737 <entry><option>-XBangPtterns</option></entry>
738 <entry>Enable <link linkend="bang-patterns">bang patterns</link>.</entry>
739 <entry>dynamic</entry>
740 <entry><option>-XNoBangPatterns</option></entry>
743 <entry><option>-XCPP</option></entry>
744 <entry>Enable the <link linkend="c-pre-processor">C preprocessor</link>.</entry>
745 <entry>dynamic</entry>
746 <entry><option>-XNoCPP</option></entry>
749 <entry><option>-XPatternGuards</option></entry>
750 <entry>Enable <link linkend="pattern-guards">pattern guards</link>.</entry>
751 <entry>dynamic</entry>
752 <entry><option>-XNoPatternGuards</option></entry>
755 <entry><option>-XUnicodeSyntax</option></entry>
756 <entry>Enable unicode syntax.</entry>
757 <entry>dynamic</entry>
758 <entry><option>-XNoUnicodeSyntax</option></entry>
761 <entry><option>-XMagicHash</option></entry>
762 <entry>Enable the “magic hash”.</entry>
763 <entry>dynamic</entry>
764 <entry><option>-XNoMagicHash</option></entry>
767 <entry><option>-XPolymorphicComponents</option></entry>
768 <entry>Enable polymorphic components.</entry>
769 <entry>dynamic</entry>
770 <entry><option>-XNoPolymorphicComponents</option></entry>
773 <entry><option>-XExistentialQuantification</option></entry>
774 <entry>Enable <link linkend="existential-quantification">existential quantification</link>.</entry>
775 <entry>dynamic</entry>
776 <entry><option>-XNoExistentialQuantification</option></entry>
779 <entry><option>-XKindSignatures</option></entry>
780 <entry>Enable kind signatures.</entry>
781 <entry>dynamic</entry>
782 <entry><option>-XNoKindSignatures</option></entry>
785 <entry><option>-XPatternSignatures</option></entry>
786 <entry>Enable <link linkend="pattern-type-sigs">pattern type signatures</link>.</entry>
787 <entry>dynamic</entry>
788 <entry><option>-XNoPatternSignatures</option></entry>
791 <entry><option>-XEmptyDataDecls</option></entry>
792 <entry>Enable empty data declarations.</entry>
793 <entry>dynamic</entry>
794 <entry><option>-XNoEmptyDataDecls</option></entry>
797 <entry><option>-XParallelListComp</option></entry>
798 <entry>Enable <link linkend="parallel-list-comprehensions">parallel list comprehensions</link>.</entry>
799 <entry>dynamic</entry>
800 <entry><option>-XNoParallelListComp</option></entry>
803 <entry><option>-XUnliftedFFITypes</option></entry>
804 <entry>Enable unlifted FFI types.</entry>
805 <entry>dynamic</entry>
806 <entry><option>-XNoUnliftedFFITypes</option></entry>
809 <entry><option>-XPartiallyAppliedClosedTypeSynonyms</option></entry>
810 <entry>Enable partially applied type synonyms.</entry>
811 <entry>dynamic</entry>
812 <entry><option>-XNoPartiallyAppliedClosedTypeSynonyms</option></entry>
815 <entry><option>-XNoRank2Types</option></entry>
816 <entry>Enable rank-2 types.</entry>
817 <entry>dynamic</entry>
818 <entry><option>-XNoRank2Types</option></entry>
821 <entry><option>-XRankNTypes</option></entry>
822 <entry>Enable rank-N types.</entry>
823 <entry>dynamic</entry>
824 <entry><option>-XNoRankNTypes</option></entry>
827 <entry><option>-XTypeOperators</option></entry>
828 <entry>Enable type operators.</entry>
829 <entry>dynamic</entry>
830 <entry><option>-XNoTypeOperators</option></entry>
833 <entry><option>-XRecursiveDo</option></entry>
834 <entry>Enable <link linkend="mdo-notation">recursive do (mdo) notation</link>.</entry>
835 <entry>dynamic</entry>
836 <entry><option>-XNoRecursiveDo</option></entry>
839 <entry><option>-XPArr</option></entry>
840 <entry>Enable parallel arrays.</entry>
841 <entry>dynamic</entry>
842 <entry><option>-XNoPArr</option></entry>
845 <entry><option>-XRecordWildCards</option></entry>
846 <entry>Enable record wildcards.</entry>
847 <entry>dynamic</entry>
848 <entry><option>-XNoRecordWildCards</option></entry>
851 <entry><option>-XRecordPuns</option></entry>
852 <entry>Enable record puns.</entry>
853 <entry>dynamic</entry>
854 <entry><option>-XNoRecordPuns</option></entry>
857 <entry><option>-XDisambiguateRecordFields</option></entry>
858 <entry>Enable the <link linkend="disambiguate-fields">disambiguate fields.</link> exception</entry>
859 <entry>dynamic</entry>
860 <entry><option>-XNoDisambiguateRecordFields</option></entry>
863 <entry><option>-XUnboxedTuples</option></entry>
864 <entry>Enable <link linkend="unboxed-tuples">unboxed tuples</link>.</entry>
865 <entry>dynamic</entry>
866 <entry><option>-XNoUnboxedTuples</option></entry>
869 <entry><option>-XStandaloneDeriving</option></entry>
870 <entry>Enable standalone deriving.</entry>
871 <entry>dynamic</entry>
872 <entry><option>-XNoStandaloneDeriving</option></entry>
875 <entry><option>-XDeriveDataTypeable</option></entry>
876 <entry>Enable deriving for the Data and Typeable classes.</entry>
877 <entry>dynamic</entry>
878 <entry><option>-XNoDeriveDataTypeable</option></entry>
881 <entry><option>-XTypeSynonymInstances</option></entry>
882 <entry>Enable <link linkend="type-synonyms">type synonyms</link>.</entry>
883 <entry>dynamic</entry>
884 <entry><option>-XNoTypeSynonymInstances</option></entry>
887 <entry><option>-XFlexibleContexts</option></entry>
888 <entry>Enable flexible contexts.</entry>
889 <entry>dynamic</entry>
890 <entry><option>-XNoFlexibleContexts</option></entry>
893 <entry><option>-XFlexibleInstances</option></entry>
894 <entry>Enable flexible instances.</entry>
895 <entry>dynamic</entry>
896 <entry><option>-XNoFlexibleInstances</option></entry>
899 <entry><option>-XConstrainedClassMethods</option></entry>
900 <entry>Enable constrained class methods.</entry>
901 <entry>dynamic</entry>
902 <entry><option>-XNoConstrainedClassMethods</option></entry>
905 <entry><option>-XMultiParamTypeClasses</option></entry>
906 <entry>Enable <link linkend="multi-param-type-classes">multi parameter type classes</link>.</entry>
907 <entry>dynamic</entry>
908 <entry><option>-XNoMultiParamTypeClasses</option></entry>
911 <entry><option>-XFunctionalDependencies</option></entry>
912 <entry>Enable <link linkend="functional-dependencies">functional dependencies</link>.</entry>
913 <entry>dynamic</entry>
914 <entry><option>-XNoFunctionalDependencies</option></entry>
917 <entry><option>-XGeneralizedNewtypeDeriving</option></entry>
918 <entry>Enable <link linkend="newtype-deriving">newtype deriving</link>.</entry>
919 <entry>dynamic</entry>
920 <entry><option>-XNoGeneralizedNewtypeDeriving</option></entry>
928 <title>Warnings</title>
930 <para><xref linkend="options-sanity"/></para>
933 <tgroup cols="4" align="left" colsep="1" rowsep="1">
937 <entry>Description</entry>
938 <entry>Static/Dynamic</entry>
939 <entry>Reverse</entry>
944 <entry><option>-W</option></entry>
945 <entry>enable normal warnings</entry>
946 <entry>dynamic</entry>
947 <entry><option>-w</option></entry>
950 <entry><option>-w</option></entry>
951 <entry>disable all warnings</entry>
952 <entry>dynamic</entry>
956 <entry><option>-Wall</option></entry>
957 <entry>enable almost all warnings (details in <xref linkend="options-sanity"/>)</entry>
958 <entry>dynamic</entry>
959 <entry><option>-w</option></entry>
962 <entry><option>-Werror</option></entry>
963 <entry>make warnings fatal</entry>
964 <entry>dynamic</entry>
969 <entry><option>-fwarn-deprecations</option></entry>
970 <entry>warn about uses of functions & types that are deprecated</entry>
971 <entry>dynamic</entry>
972 <entry><option>-fno-warn-deprecations</option></entry>
976 <entry><option>-fwarn-duplicate-exports</option></entry>
977 <entry>warn when an entity is exported multiple times</entry>
978 <entry>dynamic</entry>
979 <entry><option>-fno-warn-duplicate-exports</option></entry>
983 <entry><option>-fwarn-hi-shadowing</option></entry>
984 <entry>warn when a <literal>.hi</literal> file in the
985 current directory shadows a library</entry>
986 <entry>dynamic</entry>
987 <entry><option>-fno-warn-hi-shadowing</option></entry>
991 <entry><option>-fwarn-implicit-prelude</option></entry>
992 <entry>warn when the Prelude is implicitly imported</entry>
993 <entry>dynamic</entry>
994 <entry><option>-fno-warn-implicit-prelude</option></entry>
998 <entry><option>-fwarn-incomplete-patterns</option></entry>
999 <entry>warn when a pattern match could fail</entry>
1000 <entry>dynamic</entry>
1001 <entry><option>-fno-warn-incomplete-patterns</option></entry>
1005 <entry><option>-fwarn-incomplete-record-updates</option></entry>
1006 <entry>warn when a record update could fail</entry>
1007 <entry>dynamic</entry>
1008 <entry><option>-fno-warn-incomplete-record-updates</option></entry>
1012 <entry><option>-fwarn-missing-fields</option></entry>
1013 <entry>warn when fields of a record are uninitialised</entry>
1014 <entry>dynamic</entry>
1015 <entry><option>-fno-warn-missing-fields</option></entry>
1019 <entry><option>-fwarn-missing-methods</option></entry>
1020 <entry>warn when class methods are undefined</entry>
1021 <entry>dynamic</entry>
1022 <entry><option>-fno-warn-missing-methods</option></entry>
1026 <entry><option>-fwarn-missing-signatures</option></entry>
1027 <entry>warn about top-level functions without signatures</entry>
1028 <entry>dynamic</entry>
1029 <entry><option>-fno-warn-missing-signatures</option></entry>
1033 <entry><option>-fwarn-name-shadowing</option></entry>
1034 <entry>warn when names are shadowed</entry>
1035 <entry>dynamic</entry>
1036 <entry><option>-fno-warn-name-shadowing</option></entry>
1040 <entry><option>-fwarn-orphans</option></entry>
1041 <entry>warn when the module contains "orphan" instance declarations
1042 or rewrite rules</entry>
1043 <entry>dynamic</entry>
1044 <entry><option>-fno-warn-orphans</option></entry>
1048 <entry><option>-fwarn-overlapping-patterns</option></entry>
1049 <entry>warn about overlapping patterns</entry>
1050 <entry>dynamic</entry>
1051 <entry><option>-fno-warn-overlapping-patterns</option></entry>
1055 <entry><option>-fwarn-simple-patterns</option></entry>
1056 <entry>warn about lambda-patterns that can fail</entry>
1057 <entry>dynamic</entry>
1058 <entry><option>-fno-warn-simple-patterns</option></entry>
1062 <entry><option>-fwarn-tabs</option></entry>
1063 <entry>warn if there are tabs in the source file</entry>
1064 <entry>dynamic</entry>
1065 <entry><option>-fno-warn-tabs</option></entry>
1069 <entry><option>-fwarn-type-defaults</option></entry>
1070 <entry>warn when defaulting happens</entry>
1071 <entry>dynamic</entry>
1072 <entry><option>-fno-warn-type-defaults</option></entry>
1076 <entry><option>-fwarn-monomorphism-restriction</option></entry>
1077 <entry>warn when the Monomorphism Restriction is applied</entry>
1078 <entry>dynamic</entry>
1079 <entry><option>-fno-warn-monomorphism-restriction</option></entry>
1083 <entry><option>-fwarn-unused-binds</option></entry>
1084 <entry>warn about bindings that are unused</entry>
1085 <entry>dynamic</entry>
1086 <entry><option>-fno-warn-unused-binds</option></entry>
1090 <entry><option>-fwarn-unused-imports</option></entry>
1091 <entry>warn about unnecessary imports</entry>
1092 <entry>dynamic</entry>
1093 <entry><option>-fno-warn-unused-imports</option></entry>
1097 <entry><option>-fwarn-unused-matches</option></entry>
1098 <entry>warn about variables in patterns that aren't used</entry>
1099 <entry>dynamic</entry>
1100 <entry><option>-fno-warn-unused-matches</option></entry>
1109 <title>Optimisation levels</title>
1111 <para><xref linkend="options-optimise"/></para>
1114 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1118 <entry>Description</entry>
1119 <entry>Static/Dynamic</entry>
1120 <entry>Reverse</entry>
1125 <entry><option>-O</option></entry>
1126 <entry>Enable default optimisation (level 1)</entry>
1127 <entry>dynamic</entry>
1128 <entry><option>-O0</option></entry>
1131 <entry><option>-O</option><replaceable>n</replaceable></entry>
1132 <entry>Set optimisation level <replaceable>n</replaceable></entry>
1133 <entry>dynamic</entry>
1134 <entry><option>-O0</option></entry>
1142 <title>Individual optimisations</title>
1144 <para><xref linkend="options-f"/></para>
1147 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1151 <entry>Description</entry>
1152 <entry>Static/Dynamic</entry>
1153 <entry>Reverse</entry>
1158 <entry><option>-fcase-merge</option></entry>
1159 <entry>Enable case-merging. Implied by <option>-O</option>.</entry>
1160 <entry>dynamic</entry>
1161 <entry><option>-fno-case-merge</option></entry>
1165 <entry><option>-fdicts-strict</option></entry>
1166 <entry>Make dictionaries strict</entry>
1167 <entry>static</entry>
1168 <entry><option>-fno-dicts-strict</option></entry>
1172 <entry><option>-fdo-eta-reduction</option></entry>
1173 <entry>Enable eta-reduction. Implied by <option>-O</option>.</entry>
1174 <entry>dynamic</entry>
1175 <entry><option>-fno-do-eta-reduction</option></entry>
1179 <entry><option>-fdo-lambda-eta-expansion</option></entry>
1180 <entry>Enable lambda eta-reduction</entry>
1181 <entry>dynamic</entry>
1182 <entry><option>-fno-do-lambda-eta-expansion</option></entry>
1186 <entry><option>-fexcess-precision</option></entry>
1187 <entry>Enable excess intermediate precision</entry>
1188 <entry>dynamic</entry>
1189 <entry><option>-fno-excess-precision</option></entry>
1193 <entry><option>-fignore-asserts</option></entry>
1194 <entry>Ignore assertions in the source</entry>
1195 <entry>dynamic</entry>
1196 <entry><option>-fno-ignore-asserts</option></entry>
1200 <entry><option>-fignore-interface-pragmas</option></entry>
1201 <entry>Ignore pragmas in interface files</entry>
1202 <entry>dynamic</entry>
1203 <entry><option>-fno-ignore-interface-pragmas</option></entry>
1207 <entry><option>-fomit-interface-pragmas</option></entry>
1208 <entry>Don't generate interface pragmas</entry>
1209 <entry>dynamic</entry>
1210 <entry><option>-fno-omit-interface-pragmas</option></entry>
1214 <entry><option>-fmax-worker-args</option></entry>
1215 <entry>If a worker has that many arguments, none will be
1216 unpacked anymore (default: 10)</entry>
1217 <entry>static</entry>
1222 <entry><option>-fmax-simplifier-iterations</option></entry>
1223 <entry>Set the max iterations for the simplifier</entry>
1224 <entry>dynamic</entry>
1229 <entry><option>-fno-state-hack</option></entry>
1230 <entry>Turn off the "state hack" whereby any lambda with a real-world state token
1231 as argument is considered to be single-entry. Hence OK to inline things inside it.</entry>
1232 <entry>static</entry>
1237 <entry><option>-fcse</option></entry>
1238 <entry>Turn on common sub-expression elimination. Implied by <option>-O</option>.</entry>
1239 <entry>dynamic</entry>
1240 <entry>-fno-cse</entry>
1244 <entry><option>-ffull-laziness</option></entry>
1245 <entry>Turn on full laziness (floating bindings outwards). Implied by <option>-O</option>.</entry>
1246 <entry>dynamic</entry>
1247 <entry>-fno-full-laziness</entry>
1251 <entry><option>-frewrite-rules</option></entry>
1252 <entry>Switch on all rewrite rules (including rules
1253 generated by automatic specialisation of overloaded functions).
1254 Implied by <option>-O</option>. </entry>
1255 <entry>dynamic</entry>
1256 <entry><option>-fno-rewrite-rules</option></entry>
1260 <entry><option>-fstrictness</option></entry>
1261 <entry>Turn on strictness analysis. Implied by <option>-O</option>.</entry>
1262 <entry>dynamic</entry>
1263 <entry>-fno-strictness</entry>
1267 <entry><option>-fspec-constr</option></entry>
1268 <entry>Turn on the SpecConstr transformation. Implied by <option>-O2</option>.</entry>
1269 <entry>dynamic</entry>
1270 <entry>-fno-spec-constr</entry>
1274 <entry><option>-fliberate-case</option></entry>
1275 <entry>Turn on the liberate-case transformation. Implied by <option>-O2</option>.</entry>
1276 <entry>dynamic</entry>
1277 <entry>-fno-liberate-case</entry>
1281 <entry><option>-fspec-threshold</option>=<replaceable>n</replaceable></entry>
1282 <entry>Set the size threshold for function specialisation to <replaceable>n</replaceable>, for both
1283 the liberate-case and SpecConstr transformations (default: 200)</entry>
1284 <entry>static</entry>
1285 <entry><option>-</option></entry>
1289 <entry><option>-funbox-strict-fields</option></entry>
1290 <entry>Flatten strict constructor fields</entry>
1291 <entry>dynamic</entry>
1292 <entry><option>-fno-unbox-strict-fields</option></entry>
1296 <entry><option>-funfolding-creation-threshold</option></entry>
1297 <entry>Tweak unfolding settings</entry>
1298 <entry>static</entry>
1299 <entry><option>-fno-unfolding-creation-threshold</option></entry>
1303 <entry><option>-funfolding-fun-discount</option></entry>
1304 <entry>Tweak unfolding settings</entry>
1305 <entry>static</entry>
1306 <entry><option>-fno-unfolding-fun-discount</option></entry>
1310 <entry><option>-funfolding-keeness-factor</option></entry>
1311 <entry>Tweak unfolding settings</entry>
1312 <entry>static</entry>
1313 <entry><option>-fno-unfolding-keeness-factor</option></entry>
1317 <entry><option>-funfolding-update-in-place</option></entry>
1318 <entry>Tweak unfolding settings</entry>
1319 <entry>static</entry>
1320 <entry><option>-fno-unfolding-update-in-place</option></entry>
1324 <entry><option>-funfolding-use-threshold</option></entry>
1325 <entry>Tweak unfolding settings</entry>
1326 <entry>static</entry>
1327 <entry><option>-fno-unfolding-use-threshold</option></entry>
1331 <entry><option>-fno-pre-inlining</option></entry>
1332 <entry>Turn off pre-inlining</entry>
1333 <entry>static</entry>
1342 <title>Profiling options</title>
1344 <para><xref linkend="profiling"/></para>
1347 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1351 <entry>Description</entry>
1352 <entry>Static/Dynamic</entry>
1353 <entry>Reverse</entry>
1358 <entry><option>-auto</option></entry>
1359 <entry>Auto-add <literal>_scc_</literal>s to all
1360 exported functions</entry>
1361 <entry>static</entry>
1362 <entry><option>-no-auto</option></entry>
1365 <entry><option>-auto-all</option></entry>
1366 <entry>Auto-add <literal>_scc_</literal>s to all
1367 top-level functions</entry>
1368 <entry>static</entry>
1369 <entry><option>-no-auto-all</option></entry>
1372 <entry><option>-caf-all</option></entry>
1373 <entry>Auto-add <literal>_scc_</literal>s to all CAFs</entry>
1374 <entry>static</entry>
1375 <entry><option>-no-caf-all</option></entry>
1378 <entry><option>-prof</option></entry>
1379 <entry>Turn on profiling</entry>
1380 <entry>static</entry>
1384 <entry><option>-ticky</option></entry>
1385 <entry>Turn on ticky-ticky profiling</entry>
1386 <entry>static</entry>
1395 <title>Program coverage options</title>
1397 <para><xref linkend="hpc"/></para>
1400 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1404 <entry>Description</entry>
1405 <entry>Static/Dynamic</entry>
1406 <entry>Reverse</entry>
1411 <entry><option>-fhpc</option></entry>
1412 <entry>Turn on Haskell program coverage instrumentation</entry>
1413 <entry>static</entry>
1414 <entry><option>-</option></entry>
1417 <entry><option>-hpcdir dir</option></entry>
1418 <entry>Directory to deposit .mix files during compilation</entry>
1419 <entry>dynamic</entry>
1420 <entry><option>-</option></entry>
1428 <title>Haskell pre-processor options</title>
1430 <para><xref linkend="pre-processor"/></para>
1433 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1437 <entry>Description</entry>
1438 <entry>Static/Dynamic</entry>
1439 <entry>Reverse</entry>
1444 <entry><option>-F</option></entry>
1446 Enable the use of a pre-processor
1447 (set with <option>-pgmF</option>)
1449 <entry>dynamic</entry>
1458 <title>C pre-processor options</title>
1460 <para><xref linkend="c-pre-processor"/></para>
1463 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1467 <entry>Description</entry>
1468 <entry>Static/Dynamic</entry>
1469 <entry>Reverse</entry>
1474 <entry><option>-cpp</option></entry>
1475 <entry>Run the C pre-processor on Haskell source files</entry>
1476 <entry>dynamic</entry>
1480 <entry><option>-D</option><replaceable>symbol</replaceable><optional>=<replaceable>value</replaceable></optional></entry>
1481 <entry>Define a symbol in the C pre-processor</entry>
1482 <entry>dynamic</entry>
1483 <entry><option>-U</option><replaceable>symbol</replaceable></entry>
1486 <entry><option>-U</option><replaceable>symbol</replaceable></entry>
1487 <entry>Undefine a symbol in the C pre-processor</entry>
1488 <entry>dynamic</entry>
1492 <entry><option>-I</option><replaceable>dir</replaceable></entry>
1493 <entry>Add <replaceable>dir</replaceable> to the
1494 directory search list for <literal>#include</literal> files</entry>
1495 <entry>dynamic</entry>
1504 <title>C compiler options</title>
1506 <para><xref linkend="options-C-compiler"/></para>
1508 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1512 <entry>Description</entry>
1513 <entry>Static/Dynamic</entry>
1514 <entry>Reverse</entry>
1519 <entry><option>-#include</option> <replaceable>file</replaceable></entry>
1520 <entry>Include <replaceable>file</replaceable> when
1521 compiling the <filename>.hc</filename> file</entry>
1522 <entry>dynamic</entry>
1531 <title>Code generation options</title>
1533 <para><xref linkend="options-codegen"/></para>
1536 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1540 <entry>Description</entry>
1541 <entry>Static/Dynamic</entry>
1542 <entry>Reverse</entry>
1547 <entry><option>-fasm</option></entry>
1548 <entry>Use the native code generator</entry>
1549 <entry>dynamic</entry>
1550 <entry>-fvia-C</entry>
1553 <entry><option>-fvia-C</option></entry>
1554 <entry>Compile via C</entry>
1555 <entry>dynamic</entry>
1556 <entry>-fasm</entry>
1559 <entry><option>-fno-code</option></entry>
1560 <entry>Omit code generation</entry>
1561 <entry>dynamic</entry>
1565 <entry><option>-fbyte-code</option></entry>
1566 <entry>Generate byte-code</entry>
1567 <entry>dynamic</entry>
1571 <entry><option>-fobject-code</option></entry>
1572 <entry>Generate object code</entry>
1573 <entry>dynamic</entry>
1582 <title>Linking options</title>
1584 <para><xref linkend="options-linker"/></para>
1587 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1591 <entry>Description</entry>
1592 <entry>Static/Dynamic</entry>
1593 <entry>Reverse</entry>
1598 <entry><option>-fPIC</option></entry>
1599 <entry>Generate position-independent code (where available)</entry>
1600 <entry>static</entry>
1604 <entry><option>-dynamic</option></entry>
1605 <entry>Use dynamic Haskell libraries (if available)</entry>
1606 <entry>static</entry>
1610 <entry><option>-framework</option> <replaceable>name</replaceable></entry>
1611 <entry>On Darwin/MacOS X only, link in the framework <replaceable>name</replaceable>.
1612 This option corresponds to the <option>-framework</option> option for Apple's Linker.</entry>
1613 <entry>dynamic</entry>
1617 <entry><option>-framework-path</option> <replaceable>name</replaceable></entry>
1618 <entry>On Darwin/MacOS X only, add <replaceable>dir</replaceable> to the list of
1619 directories searched for frameworks.
1620 This option corresponds to the <option>-F</option> option for Apple's Linker.</entry>
1621 <entry>dynamic</entry>
1625 <entry><option>-l</option><replaceable>lib</replaceable></entry>
1626 <entry>Link in library <replaceable>lib</replaceable></entry>
1627 <entry>dynamic</entry>
1631 <entry><option>-L</option><replaceable>dir</replaceable></entry>
1632 <entry>Add <replaceable>dir</replaceable> to the list of
1633 directories searched for libraries</entry>
1634 <entry>dynamic</entry>
1638 <entry><option>-main-is</option></entry>
1639 <entry>Set main module and function</entry>
1640 <entry>dynamic</entry>
1644 <entry><option>--mk-dll</option></entry>
1645 <entry>DLL-creation mode (Windows only)</entry>
1646 <entry>dynamic</entry>
1650 <entry><option>-no-hs-main</option></entry>
1651 <entry>Don't assume this program contains <literal>main</literal></entry>
1652 <entry>dynamic</entry>
1656 <entry><option>-no-link</option></entry>
1657 <entry>Omit linking</entry>
1658 <entry>dynamic</entry>
1662 <entry><option>-split-objs</option></entry>
1663 <entry>Split objects (for libraries)</entry>
1664 <entry>dynamic</entry>
1668 <entry><option>-static</option></entry>
1669 <entry>Use static Haskell libraries</entry>
1670 <entry>static</entry>
1674 <entry><option>-threaded</option></entry>
1675 <entry>Use the threaded runtime</entry>
1676 <entry>static</entry>
1680 <entry><option>-debug</option></entry>
1681 <entry>Use the debugging runtime</entry>
1682 <entry>static</entry>
1686 <entry><option>-fno-gen-manifest</option></entry>
1687 <entry>Do not generate a manifest file (Windows only)</entry>
1688 <entry>dynamic</entry>
1692 <entry><option>-fno-embed-manifest</option></entry>
1693 <entry>Do not embed the manifest in the executable (Windows only)</entry>
1694 <entry>dynamic</entry>
1703 <title>Replacing phases</title>
1705 <para><xref linkend="replacing-phases"/></para>
1708 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1712 <entry>Description</entry>
1713 <entry>Static/Dynamic</entry>
1714 <entry>Reverse</entry>
1719 <entry><option>-pgmL</option> <replaceable>cmd</replaceable></entry>
1720 <entry>Use <replaceable>cmd</replaceable> as the literate pre-processor</entry>
1721 <entry>dynamic</entry>
1725 <entry><option>-pgmP</option> <replaceable>cmd</replaceable></entry>
1726 <entry>Use <replaceable>cmd</replaceable> as the C
1727 pre-processor (with <option>-cpp</option> only)</entry>
1728 <entry>dynamic</entry>
1732 <entry><option>-pgmc</option> <replaceable>cmd</replaceable></entry>
1733 <entry>Use <replaceable>cmd</replaceable> as the C compiler</entry>
1734 <entry>dynamic</entry>
1738 <entry><option>-pgmm</option> <replaceable>cmd</replaceable></entry>
1739 <entry>Use <replaceable>cmd</replaceable> as the mangler</entry>
1740 <entry>dynamic</entry>
1744 <entry><option>-pgms</option> <replaceable>cmd</replaceable></entry>
1745 <entry>Use <replaceable>cmd</replaceable> as the splitter</entry>
1746 <entry>dynamic</entry>
1750 <entry><option>-pgma</option> <replaceable>cmd</replaceable></entry>
1751 <entry>Use <replaceable>cmd</replaceable> as the assembler</entry>
1752 <entry>dynamic</entry>
1756 <entry><option>-pgml</option> <replaceable>cmd</replaceable></entry>
1757 <entry>Use <replaceable>cmd</replaceable> as the linker</entry>
1758 <entry>dynamic</entry>
1762 <entry><option>-pgmdll</option> <replaceable>cmd</replaceable></entry>
1763 <entry>Use <replaceable>cmd</replaceable> as the DLL generator</entry>
1764 <entry>dynamic</entry>
1768 <entry><option>-pgmF</option> <replaceable>cmd</replaceable></entry>
1769 <entry>Use <replaceable>cmd</replaceable> as the pre-processor
1770 (with <option>-F</option> only)</entry>
1771 <entry>dynamic</entry>
1775 <entry><option>-pgmwindres</option> <replaceable>cmd</replaceable></entry>
1776 <entry>Use <replaceable>cmd</replaceable> as the program for
1777 embedding manifests on Windows.</entry>
1778 <entry>dynamic</entry>
1784 <indexterm><primary><option>-pgmL</option></primary></indexterm>
1785 <indexterm><primary><option>-pgmP</option></primary></indexterm>
1786 <indexterm><primary><option>-pgmc</option></primary></indexterm>
1787 <indexterm><primary><option>-pgma</option></primary></indexterm>
1788 <indexterm><primary><option>-pgml</option></primary></indexterm>
1789 <indexterm><primary><option>-pgmdll</option></primary></indexterm>
1790 <indexterm><primary><option>-pgmF</option></primary></indexterm>
1795 <title>Forcing options to particular phases</title>
1797 <para><xref linkend="forcing-options-through"/></para>
1800 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1804 <entry>Description</entry>
1805 <entry>Static/Dynamic</entry>
1806 <entry>Reverse</entry>
1811 <entry><option>-optL</option> <replaceable>option</replaceable></entry>
1812 <entry>pass <replaceable>option</replaceable> to the literate pre-processor</entry>
1813 <entry>dynamic</entry>
1817 <entry><option>-optP</option> <replaceable>option</replaceable></entry>
1818 <entry>pass <replaceable>option</replaceable> to cpp (with
1819 <option>-cpp</option> only)</entry>
1820 <entry>dynamic</entry>
1824 <entry><option>-optF</option> <replaceable>option</replaceable></entry>
1825 <entry>pass <replaceable>option</replaceable> to the
1826 custom pre-processor</entry>
1827 <entry>dynamic</entry>
1831 <entry><option>-optc</option> <replaceable>option</replaceable></entry>
1832 <entry>pass <replaceable>option</replaceable> to the C compiler</entry>
1833 <entry>dynamic</entry>
1837 <entry><option>-optm</option> <replaceable>option</replaceable></entry>
1838 <entry>pass <replaceable>option</replaceable> to the mangler</entry>
1839 <entry>dynamic</entry>
1843 <entry><option>-opta</option> <replaceable>option</replaceable></entry>
1844 <entry>pass <replaceable>option</replaceable> to the assembler</entry>
1845 <entry>dynamic</entry>
1849 <entry><option>-optl</option> <replaceable>option</replaceable></entry>
1850 <entry>pass <replaceable>option</replaceable> to the linker</entry>
1851 <entry>dynamic</entry>
1855 <entry><option>-optdll</option> <replaceable>option</replaceable></entry>
1856 <entry>pass <replaceable>option</replaceable> to the DLL generator</entry>
1857 <entry>dynamic</entry>
1861 <entry><option>-optdep</option> <replaceable>option</replaceable></entry>
1862 <entry>pass <replaceable>option</replaceable> to the dependency generator</entry>
1863 <entry>dynamic</entry>
1867 <entry><option>-optwindres</option> <replaceable>option</replaceable></entry>
1868 <entry>pass <replaceable>option</replaceable> to <literal>windres</literal>.</entry>
1869 <entry>dynamic</entry>
1878 <title>Platform-specific options</title>
1880 <para><xref linkend="options-platform"/></para>
1883 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1887 <entry>Description</entry>
1888 <entry>Static/Dynamic</entry>
1889 <entry>Reverse</entry>
1894 <entry><option>-monly-[432]-regs</option></entry>
1895 <entry>(x86 only) give some registers back to the C compiler</entry>
1896 <entry>dynamic</entry>
1906 <title>External core file options</title>
1908 <para><xref linkend="ext-core"/></para>
1911 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1915 <entry>Description</entry>
1916 <entry>Static/Dynamic</entry>
1917 <entry>Reverse</entry>
1922 <entry><option>-fext-core</option></entry>
1923 <entry>Generate <filename>.hcr</filename> external Core files</entry>
1924 <entry>static</entry>
1934 <title>Compiler debugging options</title>
1936 <para><xref linkend="options-debugging"/></para>
1939 <tgroup cols="4" align="left" colsep="1" rowsep="1">
1943 <entry>Description</entry>
1944 <entry>Static/Dynamic</entry>
1945 <entry>Reverse</entry>
1950 <entry><option>-dcore-lint</option></entry>
1951 <entry>Turn on internal sanity checking</entry>
1952 <entry>dynamic</entry>
1956 <entry><option>-ddump-asm</option></entry>
1957 <entry>Dump assembly</entry>
1958 <entry>dynamic</entry>
1962 <entry><option>-ddump-bcos</option></entry>
1963 <entry>Dump interpreter byte code</entry>
1964 <entry>dynamic</entry>
1968 <entry><option>-ddump-cmm</option></entry>
1969 <entry>Dump C-- output</entry>
1970 <entry>dynamic</entry>
1974 <entry><option>-ddump-cpranal</option></entry>
1975 <entry>Dump output from CPR analysis</entry>
1976 <entry>dynamic</entry>
1980 <entry><option>-ddump-cse</option></entry>
1981 <entry>Dump CSE output</entry>
1982 <entry>dynamic</entry>
1986 <entry><option>-ddump-deriv</option></entry>
1987 <entry>Dump deriving output</entry>
1988 <entry>dynamic</entry>
1992 <entry><option>-ddump-ds</option></entry>
1993 <entry>Dump desugarer output</entry>
1994 <entry>dynamic</entry>
1998 <entry><option>-ddump-flatC</option></entry>
1999 <entry>Dump “flat” C</entry>
2000 <entry>dynamic</entry>
2004 <entry><option>-ddump-foreign</option></entry>
2005 <entry>Dump <literal>foreign export</literal> stubs</entry>
2006 <entry>dynamic</entry>
2010 <entry><option>-ddump-hpc</option></entry>
2011 <entry>Dump after intrumentation for program coverage</entry>
2012 <entry>dynamic</entry>
2016 <entry><option>-ddump-inlinings</option></entry>
2017 <entry>Dump inlining info</entry>
2018 <entry>dynamic</entry>
2022 <entry><option>-ddump-occur-anal</option></entry>
2023 <entry>Dump occurrence analysis output</entry>
2024 <entry>dynamic</entry>
2028 <entry><option>-ddump-opt-cmm</option></entry>
2029 <entry>Dump the results of C-- to C-- optimising passes</entry>
2030 <entry>dynamic</entry>
2034 <entry><option>-ddump-parsed</option></entry>
2035 <entry>Dump parse tree</entry>
2036 <entry>dynamic</entry>
2040 <entry><option>-ddump-prep</option></entry>
2041 <entry>Dump prepared core</entry>
2042 <entry>dynamic</entry>
2046 <entry><option>-ddump-rn</option></entry>
2047 <entry>Dump renamer output</entry>
2048 <entry>dynamic</entry>
2052 <entry><option>-ddump-rules</option></entry>
2053 <entry>Dump rules</entry>
2054 <entry>dynamic</entry>
2058 <entry><option>-ddump-simpl</option></entry>
2059 <entry>Dump final simplifier output</entry>
2060 <entry>dynamic</entry>
2064 <entry><option>-ddump-simpl-iterations</option></entry>
2065 <entry>Dump output from each simplifier iteration</entry>
2066 <entry>dynamic</entry>
2070 <entry><option>-ddump-spec</option></entry>
2071 <entry>Dump specialiser output</entry>
2072 <entry>dynamic</entry>
2076 <entry><option>-ddump-splices</option></entry>
2077 <entry>Dump TH splided expressions, and what they evaluate to</entry>
2078 <entry>dynamic</entry>
2082 <entry><option>-ddump-stg</option></entry>
2083 <entry>Dump final STG</entry>
2084 <entry>dynamic</entry>
2088 <entry><option>-ddump-stranal</option></entry>
2089 <entry>Dump strictness analyser output</entry>
2090 <entry>dynamic</entry>
2094 <entry><option>-ddump-tc</option></entry>
2095 <entry>Dump typechecker output</entry>
2096 <entry>dynamic</entry>
2100 <entry><option>-ddump-types</option></entry>
2101 <entry>Dump type signatures</entry>
2102 <entry>dynamic</entry>
2106 <entry><option>-ddump-worker-wrapper</option></entry>
2107 <entry>Dump worker-wrapper output</entry>
2108 <entry>dynamic</entry>
2112 <entry><option>-ddump-if-trace</option></entry>
2113 <entry>Trace interface files</entry>
2114 <entry>dynamic</entry>
2118 <entry><option>-ddump-tc-trace</option></entry>
2119 <entry>Trace typechecker</entry>
2120 <entry>dynamic</entry>
2124 <entry><option>-ddump-rn-trace</option></entry>
2125 <entry>Trace renamer</entry>
2126 <entry>dynamic</entry>
2130 <entry><option>-ddump-rn-stats</option></entry>
2131 <entry>Renamer stats</entry>
2132 <entry>dynamic</entry>
2136 <entry><option>-ddump-simpl-stats</option></entry>
2137 <entry>Dump simplifier stats</entry>
2138 <entry>dynamic</entry>
2142 <entry><option>-dppr-debug</option></entry>
2143 <entry>Turn on debug printing (more verbose)</entry>
2144 <entry>static</entry>
2148 <entry><option>-dppr-noprags</option></entry>
2149 <entry>Don't output pragma info in dumps</entry>
2150 <entry>static</entry>
2154 <entry><option>-dppr-user-length</option></entry>
2155 <entry>Set the depth for printing expressions in error msgs</entry>
2156 <entry>static</entry>
2160 <entry><option>-dsource-stats</option></entry>
2161 <entry>Dump haskell source stats</entry>
2162 <entry>dynamic</entry>
2166 <entry><option>-dcmm-lint</option></entry>
2167 <entry>C-- pass sanity checking</entry>
2168 <entry>dynamic</entry>
2172 <entry><option>-dstg-lint</option></entry>
2173 <entry>STG pass sanity checking</entry>
2174 <entry>dynamic</entry>
2178 <entry><option>-dstg-stats</option></entry>
2179 <entry>Dump STG stats</entry>
2180 <entry>dynamic</entry>
2184 <entry><option>-dverbose-core2core</option></entry>
2185 <entry>Show output from each core-to-core pass</entry>
2186 <entry>dynamic</entry>
2190 <entry><option>-dverbose-stg2stg</option></entry>
2191 <entry>Show output from each STG-to-STG pass</entry>
2192 <entry>dynamic</entry>
2196 <entry><option>-dshow-passes</option></entry>
2197 <entry>Print out each pass name as it happens</entry>
2198 <entry>dynamic</entry>
2202 <entry><option>-dfaststring-stats</option></entry>
2203 <entry>Show statistics for fast string usage when finished</entry>
2204 <entry>dynamic</entry>
2208 <entry><option>-unreg</option></entry>
2209 <entry>Enable unregisterised compilation</entry>
2210 <entry>static</entry>
2219 <title>Misc compiler options</title>
2222 <tgroup cols="4" align="left" colsep="1" rowsep="1">
2226 <entry>Description</entry>
2227 <entry>Static/Dynamic</entry>
2228 <entry>Reverse</entry>
2233 <entry><option>-fno-hi-version-check</option></entry>
2234 <entry>Don't complain about <literal>.hi</literal> file mismatches</entry>
2235 <entry>static</entry>
2239 <entry><option>-dno-black-holing</option></entry>
2240 <entry>Turn off black holing (probably doesn't work)</entry>
2241 <entry>static</entry>
2245 <entry><option>-fno-method-sharing</option></entry>
2246 <entry>Don't share specialisations of overloaded functions</entry>
2247 <entry>static</entry>
2251 <entry><option>-fhistory-size</option></entry>
2252 <entry>Set simplification history size</entry>
2253 <entry>static</entry>
2257 <entry><option>-funregisterised</option></entry>
2258 <entry>Unregisterised compilation (use <option>-unreg</option> instead)</entry>
2259 <entry>static</entry>
2263 <entry><option>-fno-asm-mangling</option></entry>
2264 <entry>Turn off assembly mangling (use <option>-unreg</option> instead)</entry>
2265 <entry>dynamic</entry>
2279 , ( "H" , HasArg (setHeapSize . fromIntegral . decodeSize) )
2285 ;;; Local Variables: ***
2287 ;;; sgml-parent-document: ("users_guide.xml" "book" "chapter") ***