From efc0f420bad7df729c0f0222641d820ca0cfaa2a Mon Sep 17 00:00:00 2001
From: Simon Marlow <marlowsd@gmail.com>
Date: Thu, 20 Aug 2009 13:42:34 +0000
Subject: [PATCH] Restore the GHC version check I'm not sure what happened
 here, but the ordering of tests was messed up, with the
 result that the GHC version check was being omitted.

---
 configure.ac |   71 +++++++++++++++++++++++++++++-----------------------------
 1 file changed, 35 insertions(+), 36 deletions(-)

diff --git a/configure.ac b/configure.ac
index 331e3b99..14d8710 100644
--- a/configure.ac
+++ b/configure.ac
@@ -89,6 +89,22 @@ AC_ARG_WITH([ghc],
   fi
   WithGhc="$GHC"])
 
+dnl ** Booting from .hc files?
+dnl --------------------------------------------------------------
+AC_ARG_ENABLE(hc-boot,
+[AC_HELP_STRING([--enable-hc-boot],
+[Boot the Glasgow Haskell Compiler from intermediate .hc files.
+ (This option is mostly of interest to porters.) [default=no]])],
+[ if test x"$enableval" = x"yes"; then
+        BootingFromHc=YES
+  else
+        BootingFromHc=NO
+  fi
+],
+[BootingFromHc=NO]
+)
+AC_SUBST(BootingFromHc)
+
 dnl ** Booting from unregisterised .hc files?
 dnl --------------------------------------------------------------
 AC_ARG_ENABLE(hc-boot-unregisterised,
@@ -112,26 +128,6 @@ AC_MSG_ERROR([--enable-hc-boot-unregisterised requires --enable-hc-boot.])
 fi;
 fi;
 
-dnl ** Must have GHC to build GHC, unless --enable-hc-boot is on
-if test "$BootingFromHc" = "NO" -a -d "$srcdir/compiler"; then
-  if test "$WithGhc" = ""; then
-     AC_MSG_ERROR([GHC is required unless bootstrapping from .hc files.])
-  fi
-  FP_COMPARE_VERSIONS([$GhcVersion],[-lt],[6.8],
-    [AC_MSG_ERROR([GHC version 6.8 or later is required to compile GHC.])])dnl
-
-  if test `expr $GhcMinVersion % 2` = "1"; then
-     echo $EnableBootstrapWithDevelSnaphost
-     if test "$EnableBootstrapWithDevelSnaphost" = "NO"; then
-        AC_MSG_ERROR([
-     $WithGhc is a development snapshot of GHC, version $GhcVersion.
-     Bootstrapping using this version of GHC is not supported, and may not
-     work.  Use --enable-bootstrap-with-devel-snapshot to try it anyway,
-     or --with-ghc to specify a different GHC to use.])
-     fi
-  fi
-fi;
-
 AC_ARG_ENABLE(bootstrap-with-devel-snapshot,
 [AC_HELP_STRING([--enable-bootstrap-with-devel-snapshot],
                 [Allow bootstrapping using a development snapshot of GHC.  This is not guaranteed to work.])],
@@ -156,6 +152,25 @@ if test "$WithGhc" != ""; then
   AC_SUBST(ghc_ge_609)dnl
 fi
 
+dnl ** Must have GHC to build GHC, unless --enable-hc-boot is on
+if test "$BootingFromHc" = "NO" -a -d "$srcdir/compiler"; then
+  if test "$WithGhc" = ""; then
+     AC_MSG_ERROR([GHC is required unless bootstrapping from .hc files.])
+  fi
+  FP_COMPARE_VERSIONS([$GhcVersion],[-lt],[6.8],
+    [AC_MSG_ERROR([GHC version 6.8 or later is required to compile GHC.])])dnl
+
+  if test `expr $GhcMinVersion % 2` = "1"; then
+     if test "$EnableBootstrapWithDevelSnaphost" = "NO"; then
+        AC_MSG_ERROR([
+     $WithGhc is a development snapshot of GHC, version $GhcVersion.
+     Bootstrapping using this version of GHC is not supported, and may not
+     work.  Use --enable-bootstrap-with-devel-snapshot to try it anyway,
+     or --with-ghc to specify a different GHC to use.])
+     fi
+  fi
+fi;
+
 # GHC is passed to Cabal, so we need a native path
 if test "${WithGhc}" != ""
 then
@@ -400,22 +415,6 @@ AC_ARG_WITH(ld,
  [FP_PROG_LD()]
 )
 
-dnl ** Booting from .hc files?
-dnl --------------------------------------------------------------
-AC_ARG_ENABLE(hc-boot,
-[AC_HELP_STRING([--enable-hc-boot],
-[Boot the Glasgow Haskell Compiler from intermediate .hc files.
- (This option is mostly of interest to porters.) [default=no]])],
-[ if test x"$enableval" = x"yes"; then
-        BootingFromHc=YES
-  else
-        BootingFromHc=NO
-  fi
-],
-[BootingFromHc=NO]
-)
-AC_SUBST(BootingFromHc)
-
 # This uses GHC, so put it after the "GHC is required" check above:
 FP_FIND_ROOT
 
-- 
1.7.10.4