-if test "$BootingFromHc" = "NO" -a "$WithGhc" = "" -a -d "$srcdir/compiler"; then
-AC_MSG_ERROR([GHC is required unless bootstrapping from .hc files.])
+if test "$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],[6.4],
+ [AC_MSG_ERROR([GHC version 6.4 or later is required to compile GHC.])])dnl