asterisk users - Mar 2005 - Meetme2 compilation Err

Hi ,

While compiling meetme2 i am getting the following error. 

Please guide me to make it work.

cc -fPIC   -c -o app_dial.o app_dial.c
In file included from app_dial.c:14:
/usr/include/asterisk/lock.h: In function `ast_mutex_init':
/usr/include/asterisk/lock.h:317: `PTHREAD_MUTEX_RECURSIVE' undeclared
(first use in this function)
/usr/include/asterisk/lock.h:317: (Each undeclared identifier is
reported only once
/usr/include/asterisk/lock.h:317: for each function it appears in.)
make: *** [app_dial.o] Error 1

Thanks in advance
Anil