[Freeswitch-users] Build mod_cepstral

[William Colls]

Freeswitch 1.10.1 (production Release)

Debian 10.1

When I try to build freeswitch with mod_cepstral enabled in 
modules.conf, I get the following error:

> making all mod_cepstral
> make[4]: Entering directory 
> '/usr/local/src/freeswitch/src/mod/asr_tts/mod_cepstral'
>   CC       mod_cepstral_la-mod_cepstral.lo
> mod_cepstral.c:41:10: fatal error: swift.h: No such file or directory
>  #include <swift.h>
>           ^~~~~~~~~
> compilation terminated.
> make[4]: *** [Makefile:715: mod_cepstral_la-mod_cepstral.lo] Error 1
> make[4]: Leaving directory 
> '/usr/local/src/freeswitch/src/mod/asr_tts/mod_cepstral'
> make[3]: *** [Makefile:704: mod_cepstral-all] Error 1
> make[3]: Leaving directory '/usr/local/src/freeswitch/src/mod'
> make[2]: *** [Makefile:607: all-recursive] Error 1
> make[2]: Leaving directory '/usr/local/src/freeswitch/src'
> make[1]: *** [Makefile:3736: all-recursive] Error 1
> make[1]: Leaving directory '/usr/local/src/freeswitch'
> make: *** [Makefile:1445: all] Error 2
What package do I need to install to resolve this issue. apt-cache -n 
search ^swift gives a list of packages, which I installed. Didn't help. 
What am I missing?

Thanks for your time and assistance.

William