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The Glasgow Haskell Compiler ============================ This is the source tree for GHC, a compiler and interactive environment for the Haskell functional programming language. For more information, visit GHC's web site: http://www.haskell.org/ghc/ Information for developers of GHC can be found here: http://hackage.haskell.org/trac/ghc/ Getting the Source ================== There are two ways to get a source tree: 1. Download source tarballs --------------------------- The GHC source distribution comes in two parts: ghc-<version>-src.tar.bz2 ghc-<version>-src-extralibs.tar.bz2 You only need the first one, which contains GHC itself and the "core" libraries. The extralibs package contains a bunch of optional libraries. If you want, you can unpack this over the top of your source tree, and these extra libraries will be built and installed automatically. Make sure you unpack the extralibs package before running configure (see below). If you don't build extralibs now, you can add them later by building and installing individual packages using Cabal. 2. Get the source from darcs ---------------------------- First get the GHC darcs repository: $ darcs get http://darcs.haskell.org/ghc/ Then run the darcs-all script in that repository to get the other repositories: $ cd ghc $ chmod +x darcs-all $ ./darcs-all get This grabs the "core" packages by default. To get the full set of packages, instead say $ ./darcs-all --extra get This also downloads the libraries that are normally bundled in the "extralibs" package (see above). Building & Installing ===================== NB. you need GHC installed in order to build GHC, because the compiler is itself written in Haskell. It is possible to build GHC using just a C compiler, but we don't recommend this as the normal route. If you *really* want to do it this way, then see the Building Guide (link below). You also need a few other tools installed: Happy , Alex , and Haddock  (for building library documentation), and a good DocBook XML toolchain if you want to build the compiler documentation. Quick start: the following gives you a default build: $ sh boot $ ./configure $ make $ make install The "sh boot" step is only necessary if this is a tree checked out from darcs. For source distributions downloaded from GHC's web site, this step has already been performed. These steps give you the default build, which includes everything optimised and built in various ways (eg. profiling libs are built). It can take a long time. To customise the build, see the file HACKING. For full information on building GHC, see the GHC Building Guide . References ==========  http://www.haskell.org/ghc/ GHC Home Page  http://hackage.haskell.org/trac/ghc GHC Developer's Wiki  http://hackage.haskell.org/trac/ghc/wiki/Building Building Guide  http://www.haskell.org/happy/ Happy  http://www.haskell.org/alex/ Alex  http://www.haskell.org/haddock/ Haddock Contributors ============ Please see http://www.haskell.org/ghc/contributors.html