diff --git a/configure.py b/configure.py
index b606e06..f184939 100755
--- a/configure.py
+++ b/configure.py
@@ -1135,7 +1135,7 @@ def create_template_vars(build_config, options, modules, cc, arch, osinfo):
                                      options.cpu, options.debug_build),
 
         'lib_opt': cc.library_opt_flags(options),
-        'mach_opt': cc.mach_opts(options.arch, options.cpu),
+        'mach_opt': '',
         'check_opt': '' if options.no_optimizations else cc.check_opt_flags,
         'lang_flags': cc.lang_flags + options.extra_flags,
         'warn_flags': warning_flags(cc.warning_flags,