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branch: supercompiler

This branch is 453 commits ahead, 17440 commits behind master

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bindisttest Fix bindisttest in git
compiler Last bug fixes and flag additions.
distrib Add script for sending bug remilestoning e-mails
docs Document eta expansion under GHC bugs and infelicities
driver Fix path to windres on Win64
ghc Build fix
includes Enable FileLock for win32 (#4363)
libffi Follow libffi changes on Windows
libraries Follow Cabal version bump
mk Follow upstream mtl and Cabal, add transformers package (#5958)
rts Merge branch 'master' of
rules Enable and fix building dynlibs on Win64
utils Adapt to changes in Cabal.
.gitignore Follow upstream mtl and Cabal, add transformers package (#5958)
ANNOUNCE Remove references to Haskell 98
HACKING Admonish the user to read the wiki page!
LICENSE Reorganisation of the source tree
MAKEHELP Remove html, pdf and ps from the list of targets in MAKEHELP
Makefile Fix 'make test' command for new testsuite location
README point to the wiki for "Setting up your system for building GHC" (#5874)
SUBMAKEHELP Make the "show" target work anywhere in the build tree
aclocal.m4 add support for ARM hard-float ABI (fixes #5914)
boot sanitise naming of package lists
config.guess add support for ARM hard-float ABI (fixes #5914)
config.sub Update config.guess, config.sub and from automake-1.10.2 add support for ARM hard-float ABI (fixes #5914) Follow upstream mtl and Cabal, add transformers package (#5958) Remove unused hasktags configure check
install-sh Mark scripts executable (boot, and the ones the build system chmods)
packages Follow upstream mtl and Cabal, add transformers package (#5958) Define "ar command" correctly in settings file on Windows
sync-all Follow upstream mtl and Cabal, add transformers package (#5958)
tarballs Add tarball syncing to darcs-all
validate Tweak the HADDOCK_DOCS regex in validate


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:

Information for developers of GHC can be found here:

Getting the Source

There are two ways to get a source tree:

  1. Download source tarballs

  Download the GHC source distribution:


  which contains GHC itself and the "boot" libraries.

  2. Check out the source code from git

  First get the GHC git repository:

    $ git clone

  Then run the sync-all script in that repository
  to get the other repositories:

     $ cd ghc
     $ ./sync-all get

  This checks out the "boot" packages.

Building & Installing

For full information on building GHC, see the GHC Building Guide [3].
Here follows a summary - if you get into trouble, the Building Guide
has all the answers.

Before building GHC you may need to install some other tools and
libraries.  See "Setting up your system for building GHC" [8].

NB. in particular you need GHC installed in order to build GHC,
because the compiler is itself written in Haskell.  For instructions
on how to port GHC to a new platform, see the Building Guide [3].

For building library documentation, you'll need Haddock [6].  To build
the compiler documentation, you need a good DocBook XML toolchain and

Quick start:  the following gives you a default build:

    $ perl boot
    $ ./configure
    $ make
    $ make install

The "perl boot" step is only necessary if this is a tree checked out
from git.  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.

Once you have a build you need to keep it going.  You need to keep all
repos in sync with the sync-all script [7].  To get the latest changes:

    $ ./sync-all pull
    $ ./sync-all get


 [1]                        GHC Home Page
 [2]                GHC Developer's Wiki
 [3]  Building Guide
 [4]                      Happy
 [5]                       Alex
 [6]                    Haddock


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