Checking if your kit is complete...
Looks good
Writing Makefile for Crypt::CAST5
cp CAST5.pm blib/lib/Crypt/CAST5.pm
/home/cpanrun/ia64/build/5.8.2/bin/perl /home/cpanrun/ia64/build/5.8.2/lib/5.8.2/ExtUtils/xsubpp  -typemap /home/cpanrun/ia64/build/5.8.2/lib/5.8.2/ExtUtils/typemap -typemap typemap  CAST5.xs > CAST5.xsc && mv CAST5.xsc CAST5.c
cc -c   -D_POSIX_C_SOURCE=199506L -D_REENTRANT -Ae -D_HPUX_SOURCE -Wl,+vnocompatwarnings -DNO_HASH_SEED -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fast +DSitanium2 +Ofltacc=strict   -DVERSION=\"0.05\" -DXS_VERSION=\"0.05\" +Z "-I/home/cpanrun/ia64/build/5.8.2/lib/5.8.2/IA64.ARCHREV_0-thread-multi/CORE"   CAST5.c
cc: error 1913: `CAST5.c' does not exist or cannot be read
make: *** [CAST5.o] Error 1