ghc6(1)

Usage

ghc [{option | filename}] ...

ghci [{option | filename}] ...

Overview

This manual page documents briefly the ghc and ghci commands. Note that ghci is not yet available on all architectures. Extensive documentation is available in various other formats including DVI, PostScript and HTML; see below.

Each of GHC's command line options is classified as either static or dynamic. A static flag may only be specified on the command line, whereas a dynamic flag may also be given in an OPTIONS pragma in a source file or set from the GHCi command-line with :set.

As a rule of thumb, all the language options are dynamic, as are the warning options and the debugging options.

The rest are static, with the notable exceptions of -v, -cpp, -fasm, -fvia-C, and -#include. The OPTIONS sections lists the status of each flag.

Common suffixes of file names for Haskell are:

`.hs`	Haskell source code; preprocess, compile
`.lhs`	literate Haskell source; unlit, preprocess, compile
`.hi`	Interface file; contains information about exported symbols
`.hc`	intermediate C files
`.x_o`	way x object files; common ways are: `p`, `u`, `s`
`.x_hi`	way x interface files

Options

Help and verbosity options

-? -help -n -v -vn -V --supported-languages --info --version --numeric-version --print-libdir -ferror-spans -Hsize -Rghc-timing

Which phases to run

-E -C -S -c -x suffix

Alternative modes of operation

--interactive --make -e expr -M

Redirecting output

-hcsuf suffix -hidir dir -hisuf suffix -o filename -odir dir -ohi filename -osuf suffix -stubdir dir -outputdir dir

Keeping intermediate files

-keep-hc-file or
-keep-hc-files -keep-s-file or
-keep-s-files -keep-raw-s-file or
-keep-raw-s-files -keep-tmp-files

Temporary files

-tmpdir

Finding imports

-idir1:dir2:... -i

Interface file options

-ddump-hi -ddump-hi-diffs -ddump-minimal-imports --show-iface file

Recompilation checking

-fforce-recomp -fno-force-recomp

Interactive-mode options

-ignore-dot-ghci -read-dot-ghci -fbreak-on-exception -fno-break-on-exception -fbreak-on-error -fno-break-on-error -fprint-evld-with-show -fno-print-evld-with-show -fprint-bind-result -fno-print-bind-result -fno-print-bind-contents -fno-implicit-import-qualified

Packages

-package-name P -package P -hide-all-packages -hide-package name -ignore-package name -package-conf file -no-user-package-conf

Language options

-fglasgow-exts -fno-glasgow-exts -XOverlappingInstances -XNoOverlappingInstances -XIncoherentInstances -XNoIncoherentInstances -XUndecidableInstances -XNoUndecidableInstances -fcontext-stack=Nn -XArrows -XNoArrows -XDisambiguateRecordFields -XNoDisambiguateRecordFields -XForeignFunctionInterface -XNoForeignFunctionInterface -XGenerics -XNoGenerics -XImplicitParams -XNoImplicitParams -firrefutable-tuples -fno-irrefutable-tuples -XNoImplicitPrelude -XImplicitPrelude -XNoMonomorphismRestriction -XMonomorphismRrestriction -XNoNPlusKPatterns -XNPlusKPatterns -XNoMonoPatBinds -XMonoPatBinds -XRelaxedPolyRec -XNoRelaxedPolyRec -XExtendedDefaultRules -XNoExtendedDefaultRules -XOverloadedStrings -XNoOverloadedStrings -XGADTs -XNoGADTs -XTypeFamilies -XNoTypeFamilies -XScopedTypeVariables -XNoScopedTypeVariables -XMonoLocalBinds -XNoMonoLocalBinds -XTemplateHaskell -XNoTemplateHaskell -XQuasiQuotes -XNoQuasiQuotes -XBangPatterns -XNoBangPatterns -XCPP -XNoCPP -XPatternGuards -XNoPatternGuards -XViewPatterns -XNoViewPatterns -XUnicodeSyntax -XNoUnicodeSyntax -XMagicHash -XNoMagicHash -XNewQualifiedOperators -XNoNewQualifiedOperators -XExplicitForALl -XNoExplicitForAll -XPolymorphicComponents -XNoPolymorphicComponents -XRank2Types -XNoRank2Types -XRankNTypes -XNoRankNTypes -XImpredicativeTypes -XNoImpredicativeTypes -XExistentialQuantification -XNoExistentialQuantification -XKindSignatures -XNoKindSignatures -XEmptyDataDecls -XNoEmptyDataDecls -XParallelListComp -XNoParallelListComp -XTransformListComp -XNoTransformListComp -XUnliftedFFITypes -XNoUnliftedFFITypes -XLiberalTypeSynonyms -XNoLiberalTypeSynonyms -XTypeOperators -XNoTypeOperators -XRecursiveDo -XNoRecursiveDo -XPArr -XNoPArr -XRecordWildCards -XNoRecordWildCards -XNamedFieldPuns -XNoNamedFieldPuns -XDisambiguateRecordFields -XNoDisambiguateRecordFields -XUnboxedTuples -XNoUnboxedTuples -XStandaloneDeriving -XNoStandaloneDeriving -XDeriveDataTypeable -XNoDeriveDataTypeable -XGeneralizedNewtypeDeriving -XNoGeneralizedNewtypeDeriving -XTypeSynonymInstances -XNoTypeSynonymInstances -XFlexibleContexts -XNoFlexibleContexts -XFlexibleInstances -XNoFlexibleInstances -XConstrainedClassMethods -XNoConstrainedClassMethods -XMultiParamTypeClasses -XNoMultiParamTypeClasses -XFunctionalDependencies -XNoFunctionalDependencies -XPackageImports -XNoPackageImports

Warnings

-W -w -w -Wall -w -Werror -Wwarn -fwarn-unrecognised-pragmas -fno-warn-unrecognised-pragmas -fwarn-warnings-deprecations -fno-warn-warnings-deprecations -fwarn-deprecated-flags -fno-warn-deprecated-flags -fwarn-duplicate-exports -fno-warn-duplicate-exports -fwarn-hi-shadowing -fno-warn-hi-shadowing -fwarn-implicit-prelude -fno-warn-implicit-prelude -fwarn-incomplete-patterns -fno-warn-incomplete-patterns -fwarn-incomplete-record-updates -fno-warn-incomplete-record-updates -fwarn-missing-fields -fno-warn-missing-fields -fwarn-missing-methods -fno-warn-missing-methods -fwarn-missing-signatures -fno-warn-missing-signatures -fwarn-name-shadowing -fno-warn-name-shadowing -fwarn-orphans -fno-warn-orphans -fwarn-overlapping-patterns -fno-warn-overlapping-patterns -fwarn-simple-patterns -fno-warn-simple-patterns -fwarn-tabs -fno-warn-tabs -fwarn-type-defaults -fno-warn-type-defaults -fwarn-monomorphism-restriction -fno-warn-monomorphism-restriction -fwarn-unused-binds -fno-warn-unused-binds -fwarn-unused-imports -fno-warn-unused-imports -fwarn-unused-matches -fno-warn-unused-matches -fwarn-unused-do-bind -fno-warn-unused-do-bind -fwarn-wrong-do-bind -fno-warn-wrong-do-bind

Optimisation levels

-O -O0 -On -O0

Individual optimisations

-fcase-merge -fno-case-merge -fdicts-strict -fno-dicts-strict -fmethod-sharing -fno-method-sharing -fdo-eta-reduction -fno-do-eta-reduction -fdo-lambda-eta-expansion -fno-do-lambda-eta-expansion -fexcess-precision -fno-excess-precision -fignore-asserts -fno-ignore-asserts -fignore-interface-pragmas -fno-ignore-interface-pragmas -fomit-interface-pragmas -fno-omit-interface-pragmas -fmax-worker-args -fsimplifier-phases -fmax-simplifier-iterations -fno-state-hack -fcse -ffull-laziness -frewrite-rules -fno-rewrite-rules -fstrictness -fspec-constr -fspec-constr-threshold=n -fno-spec-constr-threshold -fspec-constr-count=n -fno-spec-constr-count -fliberate-case -fstatic-argument-transformation -fliberate-case-threshold=n -fno-liberate-case-threshold -funbox-strict-fields -fno-unbox-strict-fields -funfolding-creation-threshold -fno-unfolding-creation-threshold -funfolding-fun-discount -fno-unfolding-fun-discount -funfolding-keeness-factor -fno-unfolding-keeness-factor -funfolding-use-threshold -fno-unfolding-use-threshold -fno-pre-inlining -feager-blackholing

Profiling options

-auto -no-auto -auto-all -no-auto-all -caf-all -no-caf-all -prof -ticky

Program coverage options

-fhpc -hpcdir dir

Haskell pre-processor options

-F

C pre-processor options

-cpp -Dsymbol=value -U -Usymbol -Idir

Code generation options

-fasm -fvia-C -fno-code -fbyte-code -fobject-code

Linking options

-shared -fPIC -dynamic -dynload -framework name -framework-path name -llib -Ldir -main-is --mk-dll -no-hs-main -no-link -split-objs -static -threaded -debug -eventlog -fno-gen-manifest -fno-embed-manifest -fno-shared-implib

Replacing phases

-pgmL cmd -pgmP cmd -pgmc cmd -pgmm cmd -pgms cmd -pgma cmd -pgml cmd -pgmdll cmd -pgmF cmd -pgmwindres cmd

Forcing options to particular phases

-optL option -optP option -optF option -optc option -optm option -opta option -optl option -optdll option -optwindres option

Platform-specific options

-monly-[432]-regs

External core file options

-fext-core

Compiler debugging options

-dcore-lint -ddump-asm -ddump-bcos -ddump-cmm -ddump-cpranal -ddump-cse -ddump-deriv -ddump-ds -ddump-flatC -ddump-foreign -ddump-hpc -ddump-inlinings -ddump-occur-anal -ddump-opt-cmm -ddump-parsed -ddump-prep -ddump-rn -ddump-rules -ddump-simpl -ddump-simpl-phases -ddump-simpl-iterations -ddump-spec -ddump-splices -ddump-stg -ddump-stranal -ddump-tc -ddump-types -ddump-worker-wrapper -ddump-if-trace -ddump-tc-trace -ddump-rn-trace -ddump-rn-stats -ddump-simpl-stats -dno-debug-output -dppr-debug -dsuppress-uniques -dppr-noprags -dppr-user-length -dsource-stats -dcmm-lint -dstg-lint -dstg-stats -dverbose-core2core -dverbose-stg2stg -dshow-passes -dfaststring-stats

Misc compiler options

-fno-hi-version-check -dno-black-holing -fhistory-size -funregisterised -fno-asm-mangling

Options

-?: help [mode]

-help: help [mode]

-n: do a dry run [dynamic]

-v: verbose mode (equivalent to -v3) [dynamic]

-vn: set verbosity level [dynamic]

-V: display GHC version [mode]

--supported-languages: display the supported language extensions [mode]

--info: display information about the compiler [mode]

--version: display GHC version [mode]

--numeric-version: display GHC version (numeric only) [mode]

--print-libdir: display GHC library directory [mode]

-ferror-spans: output full span in error messages [static]

-Hsize: Set the minimum heap size to size [static]

-Rghc-timing: Summarise timing stats for GHC (same as +RTS -tstderr) [static]

Which phases to run

`-E`	Stop after preprocessing (`.hspp` file) [mode]
`-C`	Stop after generating C (`.hc` file) [mode]
`-S`	Stop after generating assembly (`.s` file) [mode]
`-c`	Do not link [dynamic]
`-x suffix`	Override default behaviour for source files [static]

Alternative modes of operation

--interactive: Interactive mode - normally used by just running ghci; see for details. [mode]

--make: Build a multi-module Haskell program, automatically figuring out dependencies. Likely to be much easier, and faster, than using make; see for details.. [mode]

-e expr: Evaluate expr; see for details. [mode]

-M: Generate dependency information suitable for use in a Makefile; see for details. [mode]

Redirecting output

`-hcsuf suffix`	set the suffix to use for intermediate C files [dynamic]
`-hidir dir`	set directory for interface files [dynamic]
`-hisuf suffix`	set the suffix to use for interface files [dynamic]
`-o filename`	set output filename [dynamic]
`-odir dir`	set directory for object files [dynamic]
`-ohi filename`	set the filename in which to put the interface [dynamic]
`-osuf suffix`	set the output file suffix [dynamic]
`-stubdir dir`	redirect FFi stub files [dynamic]
`-outputdir dir`	set output directory [dynamic]

Keeping intermediate files

`-keep-hc-file or`	`-keep-hc-files` retain intermediate `.hc` files [dynamic]
`-keep-s-file or`	`-keep-s-files` retain intermediate `.s` files [dynamic]
`-keep-raw-s-file or`	`-keep-raw-s-files` retain intermediate `.raw_s` files [dynamic]
`-keep-tmp-files`	retain all intermediate temporary files [dynamic]

Temporary files

-tmpdir: set the directory for temporary files [dynamic]

Finding imports

`-idir1:dir2:...`	add dir, dir2, etc. to import path [static/`:set`]
`-i`	Empty the import directory list [static/`:set`]

Options

-ddump-hi: Dump the new interface to stdout [dynamic]

-ddump-hi-diffs: Show the differences vs. the old interface [dynamic]

-ddump-minimal-imports: Dump a minimal set of imports [dynamic]

--show-iface file: See . []

Recompilation checking

-fforce-recomp: Turn off recompilation checking; implied by any -ddump-X option [dynamic]

Options

-ignore-dot-ghci: Disable reading of .ghci files [static]

-read-dot-ghci: Enable reading of .ghci files [static]

-fbreak-on-exception: Break on any exception thrown [dynamic]

-fbreak-on-error: Break on uncaught exceptions and errors [dynamic]

-fprint-evld-with-show: Enable usage of Show instances in :print [dynamic]

-fprint-bind-result: Turn on printing of binding results in GHCi [dynamic]

-fno-print-bind-contents: Turn off printing of binding contents in GHCi [dynamic]

-fno-implicit-import-qualified: Turn off implicit qualified import of everything in GHCi [dynamic]

Packages

`-package-name P`	Compile to be part of package P [dynamic]
`-package P`	Expose package P [static/`:set`]
`-hide-all-packages`	Hide all packages by default [static]
`-hide-package name`	Hide package P [static/`:set`]
`-ignore-package name`	Ignore package P [static/`:set`]
`-package-conf file`	Load more packages from file [static]
`-no-user-package-conf`	Don't load the user's package config file. [static]

Options

-fglasgow-exts: Enable most language extensions [dynamic]

-XOverlappingInstances: Enable overlapping instances [dynamic]

-XIncoherentInstances: Enable incoherent instances. Implies -XOverlappingInstances [dynamic]

-XUndecidableInstances: Enable undecidable instances [dynamic]

-fcontext-stack=Nn: set the limit for context reduction. Default is 20. [dynamic]

-XArrows: Enable arrow notation extension [dynamic]

-XDisambiguateRecordFields: Enable record field disambiguation [dynamic]

-XForeignFunctionInterface: Enable foreign function interface (implied by -fglasgow-exts) [dynamic]

-XGenerics: Enable generic classes [dynamic]

-XImplicitParams: Enable Implicit Parameters. Implied by -fglasgow-exts. [dynamic]

-firrefutable-tuples: Make tuple pattern matching irrefutable [dynamic]

-XNoImplicitPrelude: Don't implicitly import Prelude [dynamic]

-XNoMonomorphismRestriction: Disable the monomorphism restriction [dynamic]

-XNoNPlusKPatterns: Disable support for n+k patterns [dynamic]

-XNoMonoPatBinds: Make pattern bindings polymorphic [dynamic]

-XRelaxedPolyRec: Relaxed checking for mutually-recursive polymorphic functions [dynamic]

-XExtendedDefaultRules: Use GHCi's extended default rules in a normal module [dynamic]

-XOverloadedStrings: Enable overloaded string literals. [dynamic]

-XGADTs: Enable generalised algebraic data types. [dynamic]

-XTypeFamilies: Enable type families. [dynamic]

-XScopedTypeVariables: Enable lexically-scoped type variables. Implied by -fglasgow-exts. [dynamic]

-XMonoLocalBinds: Enable do not generalise local bindings. [dynamic]

-XTemplateHaskell: Enable Template Haskell. No longer implied by -fglasgow-exts. [dynamic]

-XQuasiQuotes: Enable quasiquotation. [dynamic]

-XBangPatterns: Enable bang patterns. [dynamic]

-XCPP: Enable the C preprocessor. [dynamic]

-XPatternGuards: Enable pattern guards. [dynamic]

-XViewPatterns: Enable view patterns. [dynamic]

-XUnicodeSyntax: Enable unicode syntax. [dynamic]

-XMagicHash: Allow "#" as a postfix modifier on identifiers. [dynamic]

-XNewQualifiedOperators: Enable new qualified operator syntax [dynamic]

-XExplicitForALl: Enable explicit universal quantification. Implied by -XScopedTypeVariables, -XLiberalTypeSynonyms, -XRank2Types, -XRankNTypes, -XPolymorphicComponents, -XExistentialQuantification [dynamic]

-XPolymorphicComponents: Enable polymorphic components for data constructors. [dynamic]

-XRank2Types: Enable rank-2 types. [dynamic]

-XRankNTypes: Enable rank-N types. [dynamic]

-XImpredicativeTypes: Enable impredicative types. [dynamic]

-XExistentialQuantification: Enable existential quantification. [dynamic]

-XKindSignatures: Enable kind signatures. [dynamic]

-XEmptyDataDecls: Enable empty data declarations. [dynamic]

-XParallelListComp: Enable parallel list comprehensions. [dynamic]

-XTransformListComp: Enable generalised list comprehensions. [dynamic]

-XUnliftedFFITypes: Enable unlifted FFI types. [dynamic]

-XLiberalTypeSynonyms: Enable liberalised type synonyms. [dynamic]

-XTypeOperators: Enable type operators. [dynamic]

-XRecursiveDo: Enable recursive do (mdo) notation. [dynamic]

-XPArr: Enable parallel arrays. [dynamic]

-XRecordWildCards: Enable record wildcards. [dynamic]

-XNamedFieldPuns: Enable record puns. [dynamic]

-XDisambiguateRecordFields: Enable record field disambiguation. [dynamic]

-XUnboxedTuples: Enable unboxed tuples. [dynamic]

-XStandaloneDeriving: Enable standalone deriving. [dynamic]

-XDeriveDataTypeable: Enable deriving for the Data and Typeable classes. [dynamic]

-XGeneralizedNewtypeDeriving: Enable newtype deriving. [dynamic]

-XTypeSynonymInstances: Enable type synonyms in instance heads. [dynamic]

-XFlexibleContexts: Enable flexible contexts. [dynamic]

-XFlexibleInstances: Enable flexible instances. [dynamic]

-XConstrainedClassMethods: Enable constrained class methods. [dynamic]

-XMultiParamTypeClasses: Enable multi parameter type classes. [dynamic]

-XFunctionalDependencies: Enable functional dependencies. [dynamic]

-XPackageImports: Enable package-qualified imports. [dynamic]

Warnings

-W: enable normal warnings [dynamic]

-w: disable all warnings [dynamic]

-Wall: enable almost all warnings (details in ) [dynamic]

-Werror: make warnings fatal [dynamic]

-Wwarn: make warnings non-fatal [dynamic]

-fwarn-unrecognised-pragmas: warn about uses of pragmas that GHC doesn't recognise [dynamic]

-fwarn-warnings-deprecations: warn about uses of functions & types that have warnings or deprecated pragmas [dynamic]

-fwarn-deprecated-flags: warn about uses of commandline flags that are deprecated [dynamic]

-fwarn-duplicate-exports: warn when an entity is exported multiple times [dynamic]

-fwarn-hi-shadowing: warn when a .hi file in the current directory shadows a library [dynamic]

-fwarn-implicit-prelude: warn when the Prelude is implicitly imported [dynamic]

-fwarn-incomplete-patterns: warn when a pattern match could fail [dynamic]

-fwarn-incomplete-record-updates: warn when a record update could fail [dynamic]

-fwarn-missing-fields: warn when fields of a record are uninitialised [dynamic]

-fwarn-missing-methods: warn when class methods are undefined [dynamic]

-fwarn-missing-signatures: warn about top-level functions without signatures [dynamic]

-fwarn-name-shadowing: warn when names are shadowed [dynamic]

-fwarn-orphans: warn when the module contains orphan instance declarations or rewrite rules [dynamic]

-fwarn-overlapping-patterns: warn about overlapping patterns [dynamic]

-fwarn-simple-patterns: warn about lambda-patterns that can fail [dynamic]

-fwarn-tabs: warn if there are tabs in the source file [dynamic]

-fwarn-type-defaults: warn when defaulting happens [dynamic]

-fwarn-monomorphism-restriction: warn when the Monomorphism Restriction is applied [dynamic]

-fwarn-unused-binds: warn about bindings that are unused [dynamic]

-fwarn-unused-imports: warn about unnecessary imports [dynamic]

-fwarn-unused-matches: warn about variables in patterns that aren't used [dynamic]

-fwarn-unused-do-bind: warn about do bindings that appear to throw away values of types other than () [dynamic]

-fwarn-wrong-do-bind: warn about do bindings that appear to throw away monadic values that you should have bound instead [dynamic]

Optimisation levels

`-O`	Enable default optimisation (level 1) [dynamic]
`-On`	Set optimisation level n [dynamic]

Individual optimisations

-fcase-merge: Enable case-merging. Implied by -O. [dynamic]

-fdicts-strict: Make dictionaries strict [static]

-fmethod-sharing: Share specialisations of overloaded functions (default) [dynamic]

-fdo-eta-reduction: Enable eta-reduction. Implied by -O. [dynamic]

-fdo-lambda-eta-expansion: Enable lambda eta-reduction [dynamic]

-fexcess-precision: Enable excess intermediate precision [dynamic]

-fignore-asserts: Ignore assertions in the source [dynamic]

-fignore-interface-pragmas: Ignore pragmas in interface files [dynamic]

-fomit-interface-pragmas: Don't generate interface pragmas [dynamic]

-fmax-worker-args: If a worker has that many arguments, none will be unpacked anymore (default: 10) [static]

-fsimplifier-phases: Set the number of phases for the simplifier (default 2). Ignored with -O0. [dynamic]

-fmax-simplifier-iterations: Set the max iterations for the simplifier [dynamic]

-fno-state-hack: Turn off the "state hack" whereby any lambda with a real-world state token as argument is considered to be single-entry. Hence OK to inline things inside it. [static]

-fcse: Turn on common sub-expression elimination. Implied by -O. [dynamic]

-ffull-laziness: Turn on full laziness (floating bindings outwards). Implied by -O. [dynamic]

-frewrite-rules: Switch on all rewrite rules (including rules generated by automatic specialisation of overloaded functions). Implied by -O. [dynamic]

-fstrictness: Turn on strictness analysis. Implied by -O. [dynamic]

-fspec-constr: Turn on the SpecConstr transformation. Implied by -O2. [dynamic]

-fspec-constr-threshold=n: Set the size threshold for the SpecConstr transformation to n (default: 200) [static]

-fspec-constr-count=n: Set to n (default: 3) the maximum number of specialisations that will be created for any one function by the SpecConstr transformation [static]

-fliberate-case: Turn on the liberate-case transformation. Implied by -O2. [dynamic]

-fstatic-argument-transformation: Turn on the static argument transformation. Implied by -O2. [dynamic]

-fliberate-case-threshold=n: Set the size threshold for the liberate-case transformation to n (default: 200) [static]

-funbox-strict-fields: Flatten strict constructor fields [dynamic]

-funfolding-creation-threshold: Tweak unfolding settings [static]

-funfolding-fun-discount: Tweak unfolding settings [static]

-funfolding-keeness-factor: Tweak unfolding settings [static]

-funfolding-use-threshold: Tweak unfolding settings [static]

-fno-pre-inlining: Turn off pre-inlining [static]

-feager-blackholing: Turn on eager blackholing [dynamic]

Options

-auto: Auto-add _scc_s to all exported functions [dynamic]

-auto-all: Auto-add _scc_s to all top-level functions [dynamic]

-caf-all: Auto-add _scc_s to all CAFs [dynamic]

-prof: Turn on profiling [static]

-ticky: Turn on ticky-ticky profiling [static]

Options

-fhpc: Turn on Haskell program coverage instrumentation [static]

-hpcdir dir: Directory to deposit .mix files during compilation (default is .hpc) [dynamic]

Options

-F: Enable the use of a pre-processor (set with -pgmF) [dynamic]

Options

-cpp: Run the C pre-processor on Haskell source files [dynamic]

-Dsymbol=value: Define a symbol in the C pre-processor [dynamic]

-Usymbol: Undefine a symbol in the C pre-processor [dynamic]

-Idir: Add dir to the directory search list for #include files [dynamic]

Options

-fasm: Use the native code generator [dynamic]

-fvia-C: Compile via C [dynamic]

-fno-code: Omit code generation [dynamic]

-fbyte-code: Generate byte-code [dynamic]

-fobject-code: Generate object code [dynamic]

Options

-shared: Generate a shared library (as opposed to an executable) [dynamic]

-fPIC: Generate position-independent code (where available) [static]

-dynamic: Use dynamic Haskell libraries (if available) [static]

-dynload: Selects one of a number of modes for finding shared libraries at runtime. [static]

-framework name: On Darwin/MacOS X only, link in the framework name. This option corresponds to the -framework option for Apple's Linker. [dynamic]

-framework-path name: On Darwin/MacOS X only, add dir to the list of directories searched for frameworks. This option corresponds to the -F option for Apple's Linker. [dynamic]

-llib: Link in library lib [dynamic]

-Ldir: Add dir to the list of directories searched for libraries [dynamic]

-main-is: Set main module and function [dynamic]

--mk-dll: DLL-creation mode (Windows only) [dynamic]

-no-hs-main: Don't assume this program contains main [dynamic]

-no-link: Omit linking [dynamic]

-split-objs: Split objects (for libraries) [dynamic]

-static: Use static Haskell libraries [static]

-threaded: Use the threaded runtime [static]

-debug: Use the debugging runtime [static]

-eventlog: Enable runtime event tracing [static]

-fno-gen-manifest: Do not generate a manifest file (Windows only) [dynamic]

-fno-embed-manifest: Do not embed the manifest in the executable (Windows only) [dynamic]

-fno-shared-implib: Don't generate an import library for a DLL (Windows only) [dynamic]

Replacing phases

`-pgmL cmd`	Use cmd as the literate pre-processor [dynamic]
`-pgmP cmd`	Use cmd as the C pre-processor (with `-cpp` only) [dynamic]
`-pgmc cmd`	Use cmd as the C compiler [dynamic]
`-pgmm cmd`	Use cmd as the mangler [dynamic]
`-pgms cmd`	Use cmd as the splitter [dynamic]
`-pgma cmd`	Use cmd as the assembler [dynamic]
`-pgml cmd`	Use cmd as the linker [dynamic]
`-pgmdll cmd`	Use cmd as the DLL generator [dynamic]
`-pgmF cmd`	Use cmd as the pre-processor (with `-F` only) [dynamic]
`-pgmwindres cmd`	Use cmd as the program for embedding manifests on Windows. [dynamic]

Forcing options to particular phases

`-optL option`	pass option to the literate pre-processor [dynamic]
`-optP option`	pass option to cpp (with `-cpp` only) [dynamic]
`-optF option`	pass option to the custom pre-processor [dynamic]
`-optc option`	pass option to the C compiler [dynamic]
`-optm option`	pass option to the mangler [dynamic]
`-opta option`	pass option to the assembler [dynamic]
`-optl option`	pass option to the linker [dynamic]
`-optdll option`	pass option to the DLL generator [dynamic]
`-optwindres option`	pass option to `windres`. [dynamic]

Options

-monly-[432]-regs: (x86 only) give some registers back to the C compiler [dynamic]

Options

-fext-core: Generate .hcr external Core files [dynamic]

Options

-dcore-lint: Turn on internal sanity checking [dynamic]

-ddump-asm: Dump assembly [dynamic]

-ddump-bcos: Dump interpreter byte code [dynamic]

-ddump-cmm: Dump C-- output [dynamic]

-ddump-cpranal: Dump output from CPR analysis [dynamic]

-ddump-cse: Dump CSE output [dynamic]

-ddump-deriv: Dump deriving output [dynamic]

-ddump-ds: Dump desugarer output [dynamic]

-ddump-flatC: Dump `flat' C [dynamic]

-ddump-foreign: Dump foreign export stubs [dynamic]

-ddump-hpc: Dump after instrumentation for program coverage [dynamic]

-ddump-inlinings: Dump inlining info [dynamic]

-ddump-occur-anal: Dump occurrence analysis output [dynamic]

-ddump-opt-cmm: Dump the results of C-- to C-- optimising passes [dynamic]

-ddump-parsed: Dump parse tree [dynamic]

-ddump-prep: Dump prepared core [dynamic]

-ddump-rn: Dump renamer output [dynamic]

-ddump-rules: Dump rules [dynamic]

-ddump-simpl: Dump final simplifier output [dynamic]

-ddump-simpl-phases: Dump output from each simplifier phase [dynamic]

-ddump-simpl-iterations: Dump output from each simplifier iteration [dynamic]

-ddump-spec: Dump specialiser output [dynamic]

-ddump-splices: Dump TH spliced expressions, and what they evaluate to [dynamic]

-ddump-stg: Dump final STG [dynamic]

-ddump-stranal: Dump strictness analyser output [dynamic]

-ddump-tc: Dump typechecker output [dynamic]

-ddump-types: Dump type signatures [dynamic]

-ddump-worker-wrapper: Dump worker-wrapper output [dynamic]

-ddump-if-trace: Trace interface files [dynamic]

-ddump-tc-trace: Trace typechecker [dynamic]

-ddump-rn-trace: Trace renamer [dynamic]

-ddump-rn-stats: Renamer stats [dynamic]

-ddump-simpl-stats: Dump simplifier stats [dynamic]

-dno-debug-output: Suppress unsolicited debugging output [static]

-dppr-debug: Turn on debug printing (more verbose) [static]

-dsuppress-uniques: Suppress the printing of uniques in debug output (easier to use diff. [static]

-dppr-noprags: Don't output pragma info in dumps [static]

-dppr-user-length: Set the depth for printing expressions in error msgs [static]

-dsource-stats: Dump haskell source stats [dynamic]

-dcmm-lint: C-- pass sanity checking [dynamic]

-dstg-lint: STG pass sanity checking [dynamic]

-dstg-stats: Dump STG stats [dynamic]

-dverbose-core2core: Show output from each core-to-core pass [dynamic]

-dverbose-stg2stg: Show output from each STG-to-STG pass [dynamic]

-dshow-passes: Print out each pass name as it happens [dynamic]

-dfaststring-stats: Show statistics for fast string usage when finished [dynamic]

Options

-fno-hi-version-check: Don't complain about .hi file mismatches [static]

-dno-black-holing: Turn off black holing (probably doesn't work) [static]

-fhistory-size: Set simplification history size [static]

-funregisterised: Unregisterised compilation (use -unreg instead) [static]

-fno-asm-mangling: Turn off assembly mangling (use -unreg instead) [dynamic]

Files

/usr/lib

Releases

4 releases since Debian 3.1 (Sarge); the text changed 3 times.

--info since Debian 5.0 (Lenny); --mk-dll since Debian 4.0 (Etch); --supported-languages since Debian 5.0 (Lenny); -F since Debian 4.0 (Etch); -H since Debian 4.0 (Etch); -Rghc-timing since Debian 4.0 (Etch); -XArrows since Debian 5.0 (Lenny); -XBangPatterns since Debian 5.0 (Lenny); -XCPP since Debian 5.0 (Lenny); -XConstrainedClassMethods since Debian 5.0 (Lenny); -XDeriveDataTypeable since Debian 5.0 (Lenny); -XDisambiguateRecordFields since Debian 5.0 (Lenny); -XEmptyDataDecls since Debian 5.0 (Lenny); -XExistentialQuantification since Debian 5.0 (Lenny); -XExplicitForALl since Debian 6.0 (Squeeze); -XExtendedDefaultRules since Debian 5.0 (Lenny); -XFlexibleContexts since Debian 5.0 (Lenny); -XFlexibleInstances since Debian 5.0 (Lenny); -XForeignFunctionInterface since Debian 5.0 (Lenny); -XFunctionalDependencies since Debian 5.0 (Lenny); -XGADTs since Debian 5.0 (Lenny); -XGeneralizedNewtypeDeriving since Debian 5.0 (Lenny); -XGenerics since Debian 5.0 (Lenny); -XImplicitParams since Debian 5.0 (Lenny); -XImpredicativeTypes since Debian 6.0 (Squeeze); -XIncoherentInstances since Debian 5.0 (Lenny); -XKindSignatures since Debian 5.0 (Lenny); -XLiberalTypeSynonyms since Debian 5.0 (Lenny); -XMagicHash since Debian 5.0 (Lenny); -XMonoLocalBinds since Debian 6.0 (Squeeze); -XMultiParamTypeClasses since Debian 5.0 (Lenny); -XNamedFieldPuns since Debian 6.0 (Squeeze); -XNewQualifiedOperators since Debian 6.0 (Squeeze); -XNoImplicitPrelude since Debian 5.0 (Lenny); -XNoMonoPatBinds since Debian 5.0 (Lenny); -XNoMonomorphismRestriction since Debian 5.0 (Lenny); -XNoNPlusKPatterns since Debian 6.0 (Squeeze); -XOverlappingInstances since Debian 5.0 (Lenny); -XOverloadedStrings since Debian 5.0 (Lenny); -XPArr since Debian 5.0 (Lenny); -XPackageImports since Debian 6.0 (Squeeze); -XParallelListComp since Debian 5.0 (Lenny); -XPatternGuards since Debian 5.0 (Lenny); -XPolymorphicComponents since Debian 5.0 (Lenny); -XQuasiQuotes since Debian 6.0 (Squeeze); -XRank2Types since Debian 5.0 (Lenny); -XRankNTypes since Debian 5.0 (Lenny); -XRecordWildCards since Debian 5.0 (Lenny); -XRecursiveDo since Debian 5.0 (Lenny); -XRelaxedPolyRec since Debian 5.0 (Lenny); -XScopedTypeVariables since Debian 5.0 (Lenny); -XStandaloneDeriving since Debian 5.0 (Lenny); -XTemplateHaskell since Debian 5.0 (Lenny); -XTransformListComp since Debian 6.0 (Squeeze); -XTypeFamilies since Debian 5.0 (Lenny); -XTypeOperators since Debian 5.0 (Lenny); -XTypeSynonymInstances since Debian 5.0 (Lenny); -XUnboxedTuples since Debian 5.0 (Lenny); -XUndecidableInstances since Debian 5.0 (Lenny); -XUnicodeSyntax since Debian 5.0 (Lenny); -XUnliftedFFITypes since Debian 5.0 (Lenny); -XViewPatterns since Debian 6.0 (Squeeze); -dcmm-lint since Debian 4.0 (Etch); -ddump-cmm since Debian 4.0 (Etch); -ddump-hpc since Debian 5.0 (Lenny); -ddump-if-trace since Debian 4.0 (Etch); -ddump-opt-cmm since Debian 4.0 (Etch); -ddump-prep since Debian 4.0 (Etch); -ddump-simpl-phases since Debian 6.0 (Squeeze); -ddump-splices since Debian 4.0 (Etch); -ddump-tc-trace since Debian 4.0 (Etch); -dfaststring-stats since Debian 4.0 (Etch); -dno-debug-output since Debian 6.0 (Squeeze); -dshow-passes since Debian 4.0 (Etch); -dsuppress-uniques since Debian 6.0 (Squeeze); -dynload since Debian 6.0 (Squeeze); -eventlog since Debian 6.0 (Squeeze); -fPIC since Debian 4.0 (Etch); -fbreak-on-error since Debian 5.0 (Lenny); -fbreak-on-exception since Debian 5.0 (Lenny); -fbyte-code since Debian 5.0 (Lenny); -ferror-spans since Debian 4.0 (Etch); -fhpc since Debian 5.0 (Lenny); -fno-embed-manifest since Debian 5.0 (Lenny); -fno-gen-manifest since Debian 5.0 (Lenny); -fno-implicit-import-qualified since Debian 6.0 (Squeeze); -fno-print-bind-contents since Debian 5.0 (Lenny); -fno-shared-implib since Debian 6.0 (Squeeze); -fobject-code since Debian 5.0 (Lenny); -fprint-bind-result since Debian 6.0 (Squeeze); -fprint-evld-with-show since Debian 5.0 (Lenny); -hpcdir since Debian 5.0 (Lenny); -n since Debian 4.0 (Etch); -shared since Debian 6.0 (Squeeze).

-#include until Debian 5.0 (Lenny); -XPatternSignatures until Debian 5.0 (Lenny); -XRecordPuns until Debian 5.0 (Lenny); -auto-dicts until Debian 3.1 (Sarge); -ddump-absC until Debian 3.1 (Sarge); -ddump-realC until Debian 3.1 (Sarge); -ddump-sat until Debian 3.1 (Sarge); -ddump-stix until Debian 3.1 (Sarge); -ddump-usagesp until Debian 3.1 (Sarge); -dusagesp-lint until Debian 3.1 (Sarge); -fallow-incoherent-instances until Debian 4.0 (Etch); -fallow-overlapping-instances until Debian 4.0 (Etch); -fallow-undecidable-instances until Debian 4.0 (Etch); -farrows until Debian 4.0 (Etch); -fbang-patterns until Debian 4.0 (Etch); -fdisambiguate-record-fields until Debian 5.0 (Lenny); -femit-extern-decls until Debian 3.1 (Sarge); -fextended-default-rules until Debian 4.0 (Etch); -fffi until Debian 4.0 (Etch); -ffi until Debian 4.0 (Etch); -fgenerics until Debian 4.0 (Etch); -fglobalise-toplev-names until Debian 3.1 (Sarge); -fignore-asserts until Debian 3.1 (Sarge); -fimplicit-params until Debian 4.0 (Etch); -fno-implicit-prelude until Debian 4.0 (Etch); -fno-method-sharing until Debian 5.0 (Lenny); -fno-mono-pat-binds until Debian 4.0 (Etch); -fno-monomorphism-restriction until Debian 4.0 (Etch); -fno-print-bind-result until Debian 5.0 (Lenny); -fno-prune-decls until Debian 3.1 (Sarge); -fscoped-type-variables until Debian 4.0 (Etch); -fth until Debian 4.0 (Etch); -gransim until Debian 3.1 (Sarge); -mv8 until Debian 3.1 (Sarge); -package until Debian 3.1 (Sarge); -parallel until Debian 3.1 (Sarge); -smp until Debian 3.1 (Sarge); -unreg until Debian 5.0 (Lenny).