1 The Glasgow Haskell Compiler
2 ============================
4 This is the source tree for GHC, a compiler and interactive
5 environment for the Haskell functional programming language.
7 For more information, visit GHC's web site:
9 http://www.haskell.org/ghc/
11 Information for developers of GHC can be found here:
13 http://hackage.haskell.org/trac/ghc/
19 There are two ways to get a source tree:
21 1. Download source tarballs
22 ---------------------------
24 The GHC source distribution comes in two parts:
26 ghc-<version>-src.tar.bz2
27 ghc-<version>-src-extralibs.tar.bz2
29 You only need the first one, which contains GHC itself and
32 The extralibs package contains a bunch of optional libraries. If
33 you want, you can unpack this over the top of your source tree, and
34 these extra libraries will be built and installed automatically.
35 Make sure you unpack the extralibs package before running configure
38 If you don't build extralibs now, you can add them later by building
39 and installing individual packages using Cabal.
41 2. Get the source from darcs
42 ----------------------------
44 First get the GHC darcs repository:
46 $ darcs get http://darcs.haskell.org/ghc/
48 Then run the darcs-all script in that repository
49 to get the other repositories:
55 This grabs the "boot" packages by default. To get the full set of
58 $ ./darcs-all --extra get
60 This also downloads the libraries that are normally bundled in the
61 "extralibs" package (see above).
67 For full information on building GHC, see the GHC Building Guide [3].
68 Here follows a summary - if you get into trouble, the Building Guide
71 NB. you need GHC installed in order to build GHC, because the compiler
72 is itself written in Haskell. It is possible to build GHC using just
73 a C compiler, but we don't recommend this as the normal route. If you
74 *really* want to do it this way, then see the Building Guide.
76 If you're building from darcs sources (as opposed to a source
77 distribution) then you also need to install Happy [4] and Alex [5].
79 For building library documentation, you'll need Haddock [6]. To build
80 the compiler documentation, you need a good DocBook XML toolchain.
82 Quick start: the following gives you a default build:
89 The "sh boot" step is only necessary if this is a tree checked out
90 from darcs. For source distributions downloaded from GHC's web site,
91 this step has already been performed.
93 If you want the documentation too then use these commands instead:
95 $ echo "XMLDocWays = html" > mk/build.mk
96 $ echo "HADDOCK_DOCS = YES" >> mk/build.mk
103 These steps give you the default build, which includes everything
104 optimised and built in various ways (eg. profiling libs are built).
105 It can take a long time. To customise the build, see the file
113 [1] http://www.haskell.org/ghc/ GHC Home Page
114 [2] http://hackage.haskell.org/trac/ghc GHC Developer's Wiki
115 [3] http://hackage.haskell.org/trac/ghc/wiki/Building Building Guide
116 [4] http://www.haskell.org/happy/ Happy
117 [5] http://www.haskell.org/alex/ Alex
118 [6] http://www.haskell.org/haddock/ Haddock
126 http://www.haskell.org/ghc/contributors.html