I have already tried and end up with the following error messages. Here are the error messages Make from : /root/freeradius-server-3.0.4/src/modules/rlm_smsotp [root@RADSERVER rlm_smsotp]# make make: *** No targets specified and no makefile found. Stop. And from /root/freeradius-server-3.0.4 [root@SRADEUREQ01 freeradius-server-3.0.4]# make Can not find suitable object file for build/objs/src/modules/rlm_smsotp.lo make: *** [build/lib/local/rlm_smsotp.la] Error 1 Pras. -----Original Message----- From: Freeradius-Users [mailto:freeradius-users-bounces+usersurweb=outlook.com@lists.freeradius.org] On Behalf Of Alan DeKok Sent: Friday, July 17, 2015 18:31 To: FreeRadius users mailing list Subject: Re: Centos 7 with Freeradius 3.0.4 : smsotp supported ? And did you even try typing "make" from the top directory? No? Well, there's your problem. You're worried about nothing. You're looking at the wrong thing. Just build the server, and stop worrying about the exist (or not) of files called "Makefile". You should only care about those if you're a developer. And even then, you generally don't need to care about them. Alan DeKok. - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html