On OSX, use --arch_only `arch` in stead of --arch_only ppc, so things will
build for the current CPU.
diff --git a/configure.in b/configure.in
index ea2dcbd..d617108 100644
--- a/configure.in
+++ b/configure.in
@@ -1265,7 +1265,7 @@
 AC_SUBST(LIBTOOL_CRUFT)
 case $ac_sys_system/$ac_sys_release in
   Darwin/@<:@01234567@:>@.*) 
-    LIBTOOL_CRUFT="-framework System -lcc_dynamic -arch_only ppc"
+    LIBTOOL_CRUFT="-framework System -lcc_dynamic -arch_only `arch`"
     LIBTOOL_CRUFT=$LIBTOOL_CRUFT' -install_name $(PYTHONFRAMEWORKINSTALLDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
     LIBTOOL_CRUFT=$LIBTOOL_CRUFT' -compatibility_version $(VERSION) -current_version $(VERSION)';;
   Darwin/*)
@@ -1276,7 +1276,7 @@
         else 
             LIBTOOL_CRUFT=""
     fi
-    LIBTOOL_CRUFT=$LIBTOOL_CRUFT' -lSystem -lSystemStubs -arch_only ppc'
+    LIBTOOL_CRUFT=$LIBTOOL_CRUFT" -lSystem -lSystemStubs -arch_only `arch`"
     LIBTOOL_CRUFT=$LIBTOOL_CRUFT' -install_name $(PYTHONFRAMEWORKINSTALLDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
     LIBTOOL_CRUFT=$LIBTOOL_CRUFT' -compatibility_version $(VERSION) -current_version $(VERSION)';;
 esac