--- libsub-9999/wscript
+++ libsub-9999/wscript
@@ -23,10 +23,6 @@
     conf.env.DISABLE_TESTS = conf.options.disable_tests
     conf.env.API_VERSION = API_VERSION
 
-    if conf.options.enable_debug:
-        conf.env.append_value('CXXFLAGS', '-g')
-    else:
-        conf.env.append_value('CXXFLAGS', '-O3')
 
     conf.check_cfg(package='openssl', args='--cflags --libs', uselib_store='OPENSSL', mandatory=True)