Good day, I just downloaded the latest CVS and it will not compile. This is the error I receive: pbx_dundi.c:54:18: zlib.h: No such file or directory pbx_dundi.c: In function `update_key': pbx_dundi.c:1313: warning: implicit declaration of function `crc32' pbx_dundi.c: In function `dundi_decrypt': pbx_dundi.c:1369: warning: implicit declaration of function `uncompress' pbx_dundi.c:1369: `Z_OK' undeclared (first use in this function) pbx_dundi.c:1369: (Each undeclared identifier is reported only once pbx_dundi.c:1369: for each function it appears in.) pbx_dundi.c: In function `dundi_encrypt': pbx_dundi.c:1394: warning: implicit declaration of function `compress' pbx_dundi.c:1395: `Z_OK' undeclared (first use in this function) make[1]: *** [pbx_dundi.o] Error 1 make[1]: Leaving directory `/usr/src/asterisk/pbx' make: *** [subdirs] Error 1 What do I need to do?