How to use cepstral at asterisk?

I just install cepstral trial.But how to use cepstral at asterisk such as for phpagi etc.
I understand that need to install app_swift but i was not able to compile it.
I got read and follow the instruction at this blog.But it was not working to compile(make) the app_swift.

[trixbox1.localdomain app_swift-1.6.2]# make gcc -I/opt/swift/include -g -Wall -D_REENTRANT -D_GNU_SOURCE -fPIC -c -o app_swift.o app_swift.c app_swift.c: In function âload_moduleâ: app_swift.c:540: error: too many arguments to function âast_config_loadâ make: *** [app_swift.o] Error 1
I have installed asterisk-devel and gcc also.

Please advice.

Note:I am using trixbox 2.8