[commit: ghc] master: Tidy up cross-compiling (109a1e5)

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[commit: ghc] master: Tidy up cross-compiling (109a1e5)

Simon Peyton Jones
Would it be worth transferring that comment into the building guide (a cross-compiling page perhaps). The distinction is subtle and the information is useful

There is http://hackage.haskell.org/trac/ghc/wiki/CrossCompilation
but I'm not sure it has this info

Simon

| -----Original Message-----
| From: ghc-commits-bounces at haskell.org [mailto:ghc-commits-
| bounces at haskell.org] On Behalf Of Simon Marlow
| Sent: 17 January 2013 12:57
| To: ghc-commits at haskell.org
| Subject: [commit: ghc] master: Tidy up cross-compiling (109a1e5)
|
| Repository : ssh://darcs.haskell.org//srv/darcs/ghc
|
| On branch  : master
|
| http://hackage.haskell.org/trac/ghc/changeset/109a1e53287f50103e8a5b5922
| 75940b6e3dbb53
|
| >---------------------------------------------------------------
|
| commit 109a1e53287f50103e8a5b592275940b6e3dbb53
| Author: Simon Marlow <marlowsd at gmail.com>
| Date:   Thu Jan 17 11:52:15 2013 +0000
|
|     Tidy up cross-compiling
|
|     We have two cases:
|      1. building a cross-compiler
|      2. compiling GHC to run on a foreign platform
|
|     These two are done with almost the same setup: (1) is the stage 1
|     compiler, and (2) is the stage 2 compiler, when CrossCompiling=YES.
|
|     The only difference between (1) and (2) is that you if you set up
| the
|     build for (1), then it stops before stage 2 and you can 'make
| install'
|     to install stage 1.
|
|     Unfortunately, (2) didn't work, and the build system code needed
| some
|     tidying up.
|
|     Change to the way the build is set up:
|
|     Before
|     ------
|
|     To build a cross-compiler:
|       ./configure --target=<..>
|
|     To compile a foreign GHC:
|       ./configure --host=<..> --target=<..>
|
|     Now
|     ---
|
|     To build a cross-compiler:
|       ./configure --target=<..>
|       And set "Stage1Only=YES" in mk/build.mk
|
|     To compile a foreign GHC:
|       ./configure --target=<..>
|
|  aclocal.m4                  |   28 ++++++++----
|  compiler/ghc.mk             |   99 ++++++++++++++++++++----------------
| ------
|  configure.ac                |   35 ++++-----------
|  ghc.mk                      |   10 ++--
|  ghc/ghc.mk                  |    2 +-
|  libraries/primitive         |    1 -
|  libraries/vector            |    1 -
|  mk/config.mk.in             |   27 +++++++-----
|  rules/build-package-data.mk |    7 +++-
|  settings.in                 |    1 +
|  utils/ghc-pkg/ghc.mk        |    4 +-
|  11 files changed, 107 insertions(+), 108 deletions(-)
|
|
| Diff suppressed because of size. To see it, use:
|
|     git show 109a1e53287f50103e8a5b592275940b6e3dbb53
|
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