| Copyright | Isaac Jones 2003-2004 |
|---|---|
| License | BSD3 |
| Maintainer | cabal-devel@haskell.org |
| Portability | portable |
| Safe Haskell | None |
| Language | Haskell2010 |
Distribution.Simple.Compiler
Contents
Description
This should be a much more sophisticated abstraction than it is. Currently
it's just a bit of data about the compiler, like its flavour and name and
version. The reason it's just data is because currently it has to be in
Read and Show so it can be saved along with the LocalBuildInfo. The
only interesting bit of info it contains is a mapping between language
extensions and compiler command line flags. This module also defines a
PackageDB type which is used to refer to package databases. Most compilers
only know about a single global package collection but GHC has a global and
per-user one and it lets you create arbitrary other package databases. We do
not yet fully support this latter feature.
Synopsis
- module Distribution.Compiler
- data Compiler = Compiler {
- compilerId :: CompilerId
- compilerAbiTag :: AbiTag
- compilerCompat :: [CompilerId]
- compilerLanguages :: [(Language, Flag)]
- compilerExtensions :: [(Extension, Maybe Flag)]
- compilerProperties :: Map String String
- showCompilerId :: Compiler -> String
- showCompilerIdWithAbi :: Compiler -> String
- compilerFlavor :: Compiler -> CompilerFlavor
- compilerVersion :: Compiler -> Version
- compilerCompatFlavor :: CompilerFlavor -> Compiler -> Bool
- compilerCompatVersion :: CompilerFlavor -> Compiler -> Maybe Version
- compilerInfo :: Compiler -> CompilerInfo
- data PackageDB
- type PackageDBStack = [PackageDB]
- registrationPackageDB :: PackageDBStack -> PackageDB
- absolutePackageDBPaths :: PackageDBStack -> NoCallStackIO PackageDBStack
- absolutePackageDBPath :: PackageDB -> NoCallStackIO PackageDB
- data OptimisationLevel
- flagToOptimisationLevel :: Maybe String -> OptimisationLevel
- data DebugInfoLevel
- flagToDebugInfoLevel :: Maybe String -> DebugInfoLevel
- type Flag = String
- languageToFlags :: Compiler -> Maybe Language -> [Flag]
- unsupportedLanguages :: Compiler -> [Language] -> [Language]
- extensionsToFlags :: Compiler -> [Extension] -> [Flag]
- unsupportedExtensions :: Compiler -> [Extension] -> [Extension]
- parmakeSupported :: Compiler -> Bool
- reexportedModulesSupported :: Compiler -> Bool
- renamingPackageFlagsSupported :: Compiler -> Bool
- unifiedIPIDRequired :: Compiler -> Bool
- packageKeySupported :: Compiler -> Bool
- unitIdSupported :: Compiler -> Bool
- coverageSupported :: Compiler -> Bool
- profilingSupported :: Compiler -> Bool
- backpackSupported :: Compiler -> Bool
- arResponseFilesSupported :: Compiler -> Bool
- libraryDynDirSupported :: Compiler -> Bool
- data ProfDetailLevel
- knownProfDetailLevels :: [(String, [String], ProfDetailLevel)]
- flagToProfDetailLevel :: String -> ProfDetailLevel
- showProfDetailLevel :: ProfDetailLevel -> String
Haskell implementations
module Distribution.Compiler
Constructors
| Compiler | |
Fields
| |
Instances
showCompilerId :: Compiler -> String #
showCompilerIdWithAbi :: Compiler -> String #
compilerVersion :: Compiler -> Version #
compilerCompatFlavor :: CompilerFlavor -> Compiler -> Bool #
Is this compiler compatible with the compiler flavour we're interested in?
For example this checks if the compiler is actually GHC or is another compiler that claims to be compatible with some version of GHC, e.g. GHCJS.
if compilerCompatFlavor GHC compiler then ... else ...
compilerCompatVersion :: CompilerFlavor -> Compiler -> Maybe Version #
Is this compiler compatible with the compiler flavour we're interested in, and if so what version does it claim to be compatible with.
For example this checks if the compiler is actually GHC-7.x or is another compiler that claims to be compatible with some GHC-7.x version.
case compilerCompatVersion GHC compiler of Just (Version (7:_)) -> ... _ -> ...
compilerInfo :: Compiler -> CompilerInfo #
Support for package databases
Some compilers have a notion of a database of available packages. For some there is just one global db of packages, other compilers support a per-user or an arbitrary db specified at some location in the file system. This can be used to build isloated environments of packages, for example to build a collection of related packages without installing them globally.
Constructors
| GlobalPackageDB | |
| UserPackageDB | |
| SpecificPackageDB FilePath |
Instances
| Eq PackageDB # | |
| Ord PackageDB # | |
| Read PackageDB # | |
| Show PackageDB # | |
| Generic PackageDB # | |
| Binary PackageDB # | |
| type Rep PackageDB # | |
Defined in Distribution.Simple.Compiler type Rep PackageDB = D1 (MetaData "PackageDB" "Distribution.Simple.Compiler" "Cabal-2.4.1.0-ALhzvdqe44A7vLWPOxSupv" False) (C1 (MetaCons "GlobalPackageDB" PrefixI False) (U1 :: * -> *) :+: (C1 (MetaCons "UserPackageDB" PrefixI False) (U1 :: * -> *) :+: C1 (MetaCons "SpecificPackageDB" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 FilePath)))) | |
type PackageDBStack = [PackageDB] #
We typically get packages from several databases, and stack them together. This type lets us be explicit about that stacking. For example typical stacks include:
[GlobalPackageDB] [GlobalPackageDB, UserPackageDB] [GlobalPackageDB, SpecificPackageDB "package.conf.inplace"]
Note that the GlobalPackageDB is invariably at the bottom since it
contains the rts, base and other special compiler-specific packages.
We are not restricted to using just the above combinations. In particular we can use several custom package dbs and the user package db together.
When it comes to writing, the top most (last) package is used.
registrationPackageDB :: PackageDBStack -> PackageDB #
Return the package that we should register into. This is the package db at the top of the stack.
absolutePackageDBPaths :: PackageDBStack -> NoCallStackIO PackageDBStack #
Make package paths absolute
Support for optimisation levels
data OptimisationLevel #
Some compilers support optimising. Some have different levels. For compilers that do not the level is just capped to the level they do support.
Constructors
| NoOptimisation | |
| NormalOptimisation | |
| MaximumOptimisation |
Instances
Support for debug info levels
data DebugInfoLevel #
Some compilers support emitting debug info. Some have different levels. For compilers that do not the level is just capped to the level they do support.
Constructors
| NoDebugInfo | |
| MinimalDebugInfo | |
| NormalDebugInfo | |
| MaximalDebugInfo |
Instances
Support for language extensions
unsupportedLanguages :: Compiler -> [Language] -> [Language] #
extensionsToFlags :: Compiler -> [Extension] -> [Flag] #
For the given compiler, return the flags for the supported extensions.
unsupportedExtensions :: Compiler -> [Extension] -> [Extension] #
For the given compiler, return the extensions it does not support.
parmakeSupported :: Compiler -> Bool #
Does this compiler support parallel --make mode?
reexportedModulesSupported :: Compiler -> Bool #
Does this compiler support reexported-modules?
renamingPackageFlagsSupported :: Compiler -> Bool #
Does this compiler support thinning/renaming on package flags?
unifiedIPIDRequired :: Compiler -> Bool #
Does this compiler have unified IPIDs (so no package keys)
packageKeySupported :: Compiler -> Bool #
Does this compiler support package keys?
unitIdSupported :: Compiler -> Bool #
Does this compiler support unit IDs?
coverageSupported :: Compiler -> Bool #
Does this compiler support Haskell program coverage?
profilingSupported :: Compiler -> Bool #
Does this compiler support profiling?
backpackSupported :: Compiler -> Bool #
Does this compiler support Backpack?
arResponseFilesSupported :: Compiler -> Bool #
Does this compiler's "ar" command supports response file arguments (i.e. @file-style arguments).
libraryDynDirSupported :: Compiler -> Bool #
Does this compiler support a package database entry with: "dynamic-library-dirs"?
Support for profiling detail levels
data ProfDetailLevel #
Some compilers (notably GHC) support profiling and can instrument programs so the system can account costs to different functions. There are different levels of detail that can be used for this accounting. For compilers that do not support this notion or the particular detail levels, this is either ignored or just capped to some similar level they do support.
Constructors
| ProfDetailNone | |
| ProfDetailDefault | |
| ProfDetailExportedFunctions | |
| ProfDetailToplevelFunctions | |
| ProfDetailAllFunctions | |
| ProfDetailOther String |
Instances
knownProfDetailLevels :: [(String, [String], ProfDetailLevel)] #