Hello. I’m trying to build Tizen Telephony module with changed gcc option. I want to change optimization level, so I’m trying to apply -Os option for compilation.

I’ve checked several .conf files but could not find where to change for the value “__global_cflags’ .  

I’ve googled and found an old article :  

https://lists.tizen.org/pipermail/general/2013-September/002504.html

and it suggested to change /var/tmp/<user>-gbs/tizen.conf file. So I’ve tried but I could not find “__global_cflags” section there.  

Please let me know how to control compilation option for gbs. 

Thanks and Regards.