diff -ru -x '*~' readline-6.2-orig/support/shobj-conf readline-6.2/support/shobj-conf
--- support/shobj-conf	2009-10-28 14:20:21.000000000 +0100
+++ support/shobj-conf	2014-07-01 13:03:28.000000000 +0200
@@ -168,8 +168,8 @@
 	SHLIB_LIBVERSION='$(SHLIB_MAJOR)$(SHLIB_MINOR).$(SHLIB_LIBSUFF)'
 	SHLIB_LIBSUFF='dylib'
 
-	SHOBJ_LDFLAGS='-dynamiclib -dynamic -undefined dynamic_lookup -arch_only `/usr/bin/arch`'
-	SHLIB_XLDFLAGS='-dynamiclib -arch_only `/usr/bin/arch` -install_name $(libdir)/$@ -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR) -v'
+	SHOBJ_LDFLAGS='-dynamiclib -dynamic -undefined dynamic_lookup'
+	SHLIB_XLDFLAGS='-dynamiclib -install_name $(libdir)/$@ -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR) -v'
 
 	SHLIB_LIBS='-lncurses'	# see if -lcurses works on MacOS X 10.1 
 	;;