diff -rN -u old-ghc/mk/config.mk.in new-ghc/mk/config.mk.in
--- old-ghc/mk/config.mk.in	2010-07-10 00:22:07.583742895 +0300
+++ new-ghc/mk/config.mk.in	2010-07-10 00:22:08.049743314 +0300
@@ -177,7 +177,7 @@
 # Whether to use libffi for adjustors (foreign import "wrapper") or
 # not.  If we have built-in support (rts/Adjustor.c) then we use that,
 # otherwise we fall back on libffi, which is slightly slower.
-ArchHasAdjustorSupport=$(strip $(if $(findstring $(HostArch_CPP),i386 x86_64 powerpc ia64,),YES,NO))
+ArchHasAdjustorSupport=$(strip $(if $(findstring $(HostArch_CPP),i386 x86_64 powerpc,),YES,NO))
 ifeq "$(ArchHasAdjustorSupport)" "YES"
 UseLibFFIForAdjustors=NO
 else