[root@asterisk asterisk-1.2.18]# cd apps
[root@asterisk apps]# gcc -O2 -g -D_GNU_SOURCE -Iinclude -I../include -c -o app_rxfax.o app_rxfax.c
In file included from ../include/asterisk/translate.h:33,
                 from app_rxfax.c:34:
../include/asterisk/plc.h:129: error: conflicting types for âplc_state_tâ
/usr/local/include/spandsp/plc.h:128: error: previous declaration of âplc_state_tâ was here
../include/asterisk/plc.h:142: error: conflicting types for âplc_rxâ
/usr/local/include/spandsp/plc.h:142: error: previous declaration of âplc_rxâ was here
../include/asterisk/plc.h:150: error: conflicting types for âplc_fillinâ
/usr/local/include/spandsp/plc.h:150: error: previous declaration of âplc_fillinâ was here
../include/asterisk/plc.h:156: error: conflicting types for âplc_initâ
/usr/local/include/spandsp/plc.h:156: error: previous declaration of âplc_initâ was here
[root@asterisk apps]#