Hello All, I am trying to compile mod_ceptral following the instructions from https://wiki.freeswitch.org/wiki/Mod_cepstral it recommends to use 4.x instead of 5 of cesptral, but I can only download version 6. As there are some notes further down for version 6 under ubuntu, I thought I give that a try, After I disabled flit and enabled cepstral in the modules.conf , I tried to 'make' freeswich. But the proccess stumbles over the cepstral compilation with the following error: making all mod_cepstral make[5]: Entering directory `/usr/src/freeswitch.git/src/mod/asr_tts/mod_cepstral' CC mod_cepstral_la-mod_cepstral.lo CCLD mod_cepstral.la /usr/bin/ld: skipping incompatible /opt/swift/lib/libswift.so when searching for -lswift /usr/bin/ld: cannot find -lswift collect2: error: ld returned 1 exit status make[5]: *** [mod_cepstral.la] Error 1 make[5]: Leaving directory `/usr/src/freeswitch.git/src/mod/asr_tts/mod_cepstral' I have tried various things now. I have reinstalled freeswtich completely following the instructions from https://confluence.freeswitch.org/display/FREESWITCH/Debian#Debian-BuildingF... building the "stable" 1.4 version of freeswitch. But it is always the same error. I cannot find a place in the sources where the condition resides that makes it skip the /opt/swift/lib/libswift.so (which does exist, and as far as I can see is setup correclty via ldconfig) Anybody have an Ideas? Kind regards I am using a virtual box running Ubuntu 14.04 64bit Freeswitch 1.4stable