In file included from ../include/asterisk/translate.h:33,
                 from app_rxfax.c:34:
../include/asterisk/plc.h:129: error: conflicting types for ‘plc_state_t’
/usr/include/spandsp/plc.h:128: error: previous declaration of ‘plc_state_t’ was here
../include/asterisk/plc.h:142: error: conflicting types for ‘plc_rx’
/usr/include/spandsp/plc.h:142: error: previous declaration of ‘plc_rx’ was here
../include/asterisk/plc.h:150: error: conflicting types for ‘plc_fillin’
/usr/include/spandsp/plc.h:150: error: previous declaration of ‘plc_fillin’ was here
../include/asterisk/plc.h:156: error: conflicting types for ‘plc_init’
/usr/include/spandsp/plc.h:156: error: previous declaration of ‘plc_init’ was here
make[1]: *** [app_rxfax.o] Error 1
make[1]: Leaving directory `/usr/src/asterisk-1.2.18/apps'
make: *** [subdirs] Error 1