[alex] add fix-bang-pattern.diff patch from Debian to fix build on ppc

[Jens Petersen]

commit 328d9747558c7f81246ffa5b0eb29370879e90af
Author: Jens Petersen <petersen at redhat.com>
Date:   Wed Jun 6 16:35:12 2012 +0900

    add fix-bang-pattern.diff patch from Debian to fix build on ppc

 alex-ghc74-fix-bang-pattern.patch |   53 +++++++++++++++++++++++++++++++++++++
 alex.spec                         |    9 +++++-
 2 files changed, 61 insertions(+), 1 deletions(-)
---
diff --git a/alex-ghc74-fix-bang-pattern.patch b/alex-ghc74-fix-bang-pattern.patch
new file mode 100644
index 0000000..cbc5fe4
--- /dev/null
+++ b/alex-ghc74-fix-bang-pattern.patch
@@ -0,0 +1,53 @@
+# Author : Erik de Castro Lopo <erikd at mega-nerd.com>
+# Description : Fix generated haskell code so it doesn't fail with -Werror.
+# Debian Version : 2.3.5
+# Date : Sun, 17 Apr 2011 15:45:41 +1000
+
+--- a/templates/GenericTemplate.hs
++++ b/templates/GenericTemplate.hs
+@@ -9,7 +9,7 @@
+ 
+ #ifdef ALEX_GHC
+ #define ILIT(n) n#
+-#define FAST_INT_BINDING(n) (n)
++#define FAST_INT_BINDING(n) (!(n))
+ #define IBOX(n) (I# (n))
+ #define FAST_INT Int#
+ #define LT(n,m) (n <# m)
+@@ -57,10 +57,10 @@
+ ALEX_IF_BIGENDIAN
+   narrow16Int# i
+   where
+-        i    = word2Int# ((high `uncheckedShiftL#` 8#) `or#` low)
+-        high = int2Word# (ord# (indexCharOffAddr# arr (off' +# 1#)))
+-        low  = int2Word# (ord# (indexCharOffAddr# arr off'))
+-        off' = off *# 2#
++        !i    = word2Int# ((high `uncheckedShiftL#` 8#) `or#` low)
++        !high = int2Word# (ord# (indexCharOffAddr# arr (off' +# 1#)))
++        !low  = int2Word# (ord# (indexCharOffAddr# arr off'))
++        !off' = off *# 2#
+ ALEX_ELSE
+   indexInt16OffAddr# arr off
+ ALEX_ENDIF
+--- a/src/Scan.x
++++ b/src/Scan.x
+@@ -11,7 +11,7 @@
+ -------------------------------------------------------------------------------
+ 
+ {
+-{-# OPTIONS_GHC -w #-}
++{-# OPTIONS_GHC -w -XBangPatterns #-}
+ 
+ module Scan(lexer, AlexPosn(..), Token(..), Tkn(..), tokPosn) where
+ 
+--- a/src/Main.hs
++++ b/src/Main.hs
+@@ -203,7 +203,7 @@
+   hPutStrLn hdl code
+ 
+ optsToInject :: Target -> [CLIFlags] -> String
+-optsToInject GhcTarget _ = "{-# LANGUAGE CPP,MagicHash #-}\n"
++optsToInject GhcTarget _ = "{-# LANGUAGE CPP,MagicHash,BangPatterns #-}\n"
+ optsToInject _         _ = "{-# LANGUAGE CPP #-}\n"
+ 
+ importsToInject :: Target -> [CLIFlags] -> String
diff --git a/alex.spec b/alex.spec
index 9607b7a..44bdc09 100644
--- a/alex.spec
+++ b/alex.spec
@@ -1,7 +1,7 @@
 Name:           alex
 # part of haskell-platform
 Version:        3.0.1
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A lexer generator for Haskell
 
 Group:          Development/Tools
@@ -13,6 +13,7 @@ BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-rpm-macros
 BuildRequires:  autoconf docbook-style-xsl libxslt
 BuildRequires:  ghc-QuickCheck-devel
+Patch1:         alex-ghc74-fix-bang-pattern.patch
 
 %description
 Alex is a tool for generating lexical analysers in Haskell, given a
@@ -22,6 +23,9 @@ expressions.  It is similar to the tool lex or flex for C/C++.
 
 %prep
 %setup -q
+%ifarch ppc
+%patch1 -p1 -b .orig
+%endif
 
 
 %build
@@ -45,6 +49,9 @@ cd ..
 
 
 %changelog
+* Wed Jun  6 2012 Jens Petersen <petersen at redhat.com> - 3.0.1-2
+- add fix-bang-pattern.diff patch from Debian to fix build on ppc
+
 * Tue Mar 20 2012 Jens Petersen <petersen at redhat.com> - 3.0.1-1
 - update to 3.0.1
 - depends on QuickCheck