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 NB. you need GHC installed in order to build GHC, because the compiler
68 is itself written in Haskell. It is possible to build GHC using just
69 a C compiler, but we don't recommend this as the normal route. If you
70 *really* want to do it this way, then see the Building Guide (link
73 You also need a few other tools installed: Happy [4], Alex [5], and
74 Haddock [6] (for building library documentation), and a good DocBook
75 XML toolchain if you want to build the compiler documentation.
77 Quick start: the following gives you a default build:
84 The "sh boot" step is only necessary if this is a tree checked out
85 from darcs. For source distributions downloaded from GHC's web site,
86 this step has already been performed.
88 If you want the documentation too then use these commands instead:
90 $ echo "XMLDocWays = html" > mk/build.mk
91 $ echo "HADDOCK_DOCS = YES" >> mk/build.mk
98 These steps give you the default build, which includes everything
99 optimised and built in various ways (eg. profiling libs are built).
100 It can take a long time. To customise the build, see the file
103 For full information on building GHC, see the GHC Building Guide [3].
109 [1] http://www.haskell.org/ghc/ GHC Home Page
110 [2] http://hackage.haskell.org/trac/ghc GHC Developer's Wiki
111 [3] http://hackage.haskell.org/trac/ghc/wiki/Building Building Guide
112 [4] http://www.haskell.org/happy/ Happy
113 [5] http://www.haskell.org/alex/ Alex
114 [6] http://www.haskell.org/haddock/ Haddock
122 http://www.haskell.org/ghc/contributors.html