Changes between Version 36 and Version 37 of Building/Using


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Timestamp:
Jun 16, 2009 12:13:35 PM (6 years ago)
Author:
simonmar
Comment:

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  • Building/Using

    v36 v37  
    539539you could also cut-and-paste the command-line to add flags, but sometimes the `EXTRA_HC_OPTS` method is more convenient.
    540540
    541 == Building libraries ==
     541== Installing extra packages ==
    542542
    543543The [wiki:Commentary/Libraries boot libraries] are built as part of building GHC; they are built with the stage1 compiler, and imported when the stage2 compiler is compiled with stage1.
     
    545545All other libraries are stand-alone Cabal packages, and the build system knows nothing about them.  Nevertheless, it is common to want to install extra packages for the GHC in your build tree.  Here's how to do it.
    546546
    547 First, download the package.  For example (using `$(TOP)` to stand for the root directory of your build tree):
     547The easiest way is to just use [http://hackage.haskell.org/trac/hackage/wiki/CabalInstall cabal-install]:
     548
     549{{{
     550$ cabal install --with-ghc=$(TOP)/inplace/bin/ghc-stage2 <package>
     551}}}
     552
     553where `$(TOP)` stands for the root directory of your build tree, and `<package>` is the name of the package you want to install.  This will install the package in your home directory (e.g. somewhere under `~/.cabal/lib` on a Unix system) , so you'll probably want to remove it by hand when you've finished.
     554
     555There's also a way to build and register a package with GHC but without actually installing it in your home directory.  For example, if you want to install a package from its darcs repository:
    548556{{{
    549557$ cd $(TOP)/libraries
    550 $ darcs get http:://darcs.haskell.org/packages/parallel
     558$ darcs get http://darcs.haskell.org/packages/parallel
    551559}}}
    552560(You don't have to download the package to `$(TOP)/libraries`; it can go anywhere.)  Now build it using Cabal, telling Cabal to use the GHC from your build tree:
    553561{{{
    554 runhaskell Setup configure --with-ghc=$(TOP)/inplace/bin/ghc-stage2
    555 runhaskell Setup build
    556 runhaskell Setup install --inplace
    557 }}}
    558 The `--inplace` flag to `install` is passed by Cabal to `ghc-pkg` (which in turn is found form the `--with-ghc` flag you gave to `configure`, and tells `ghc-pkg` not to copy the compiled package, but rather to leave it right where it is.
     562$ runhaskell Setup configure --with-ghc=$(TOP)/inplace/bin/ghc-stage2
     563$ runhaskell Setup build
     564$ runhaskell Setup register --inplace
     565}}}
     566The `--inplace` flag to `register` tells Cabal not to copy the compiled package, but rather to leave it right where it is, and register this location in the package database in your GHC build tree.
    559567
    560568== Standard Targets ==