[commit: ghc] master: Implement `MIN_VERSION_GLASGOW_HASKELL()` macro (3549c95)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/3549c952b535803270872adaf87262f2df0295a4/ghc

>---------------------------------------------------------------

commit 3549c952b535803270872adaf87262f2df0295a4
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Sun Oct 5 22:35:22 2014 +0200

    Implement `MIN_VERSION_GLASGOW_HASKELL()` macro
    
    This exposes the `cProjectPatchLevel{1,2}` value at the CPP level to
    allow it to be used in CPP conditionals. Concretely, GHC 7.10.2.20150623
    would result in
    
      #define __GLASGOW_HASKELL__             710
      #define __GLASGOW_HASKELL_PATCHLEVEL1__ 2
      #define __GLASGOW_HASKELL_PATCHLEVEL2__ 20150623
    
    while GHC 7.10.3 results in
    
      #define __GLASGOW_HASKELL__             710
      #define __GLASGOW_HASKELL_PATCHLEVEL1__ 3
    
    and finally GHC 7.9.20141009 results in
    
      #define __GLASGOW_HASKELL__             709
      #define __GLASGOW_HASKELL_PATCHLEVEL1__ 20141009
    
    As it's error-prone to properly express CPP conditionals for testing GHC
    multi-component versions, a new macro `MIN_VERSION_GLASGOW_HASKELL()` is
    provided (also via the new CPP include file `ghcversion.h`)
    
    Finally, in order to make it easier to define the new CPP macro
    `MIN_VERSION_GLASGOW_HASKELL()`, a new default-included
    `include/ghcversion.h` is used for the new CPP definitions.
    
    Reviewed By: ekmett, austin, #ghc
    
    Differential Revision: https://phabricator.haskell.org/D66


>---------------------------------------------------------------

3549c952b535803270872adaf87262f2df0295a4
 .gitignore                      |  1 +
 aclocal.m4                      |  7 ++++
 compiler/ghc.mk                 |  4 +++
 compiler/main/DriverPipeline.hs | 28 +++++++++++----
 docs/users_guide/phases.xml     | 79 +++++++++++++++++++++++++++++++++++++++++
 ghc.mk                          |  1 +
 includes/ghc.mk                 | 39 +++++++++++++++++---
 mk/project.mk.in                |  2 ++
 8 files changed, 150 insertions(+), 11 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 3549c952b535803270872adaf87262f2df0295a4