Dears,
I have an issue when i try to compile and make freeswitch 1.8 with mod_freetdm to use sangoma card.
please note that i followed every step in the sangoma wiki

 https://wiki.freepbx.org/display/PC/Telephony+Cards+for+FreeSWITCH

and i still get this error message

cc1: all warnings being treated as errors
Makefile:1209: recipe for target 'ftmod_sangoma_isdn_la-ftmod_sangoma_isdn.lo' failed
make[2]: *** [ftmod_sangoma_isdn_la-ftmod_sangoma_isdn.lo] Error 1
make[2]: Leaving directory '/usr/src/freeswitch/libs/freetdm'
Makefile:15: recipe for target '../libfreetdm.la' failed
make[1]: *** [../libfreetdm.la] Error 2
make[1]: Leaving directory '/usr/src/freeswitch/libs/freetdm/mod_freetdm'
../../../build/modmake.rules:89: recipe for target 'all' failed
make: *** [all] Error 1
root@debian:/usr/src/freeswitch/libs/freetdm/mod_freetdm#

best regards