Checking if your kit is complete... Looks good Writing Makefile for Net::FPing cp FPing.pm blib/lib/Net/FPing.pm /home/cpanrun/ia64-lp64/build/5.8.2/bin/perl /home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/ExtUtils/xsubpp -typemap /home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/ExtUtils/typemap FPing.xs > FPing.xsc && mv FPing.xsc FPing.c cc -c -D_POSIX_C_SOURCE=199506L -D_REENTRANT -Ae -D_HPUX_SOURCE -Wl,+vnocompatwarnings +DD64 -DNO_HASH_SEED -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fast +DSitanium2 +Ofltacc=strict -DVERSION=\"0.9\" -DXS_VERSION=\"0.9\" +Z "-I/home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/IA64.ARCHREV_0-thread-multi-LP64/CORE" FPing.c Warning 129: "FPing.xs", line 1 # Redefinition of macro '_POSIX_C_SOURCE' differs from previous definition at [Unknown position]. #define _POSIX_C_SOURCE 199309 ^^^^^^^^^^^^^^^ Error 172: "FPing.xs", line 553 # Undeclared variable 'MSG_DONTWAIT'. int len = recvfrom (icmp4_fd, buf, sizeof (buf), MSG_DONTWAIT | MSG_TRUNC, &sa, &sl); ^^^^^^^^^^^^ Error 172: "FPing.xs", line 602 # Undeclared variable 'MSG_DONTWAIT'. int len = recvfrom (icmp6_fd, &pkt, sizeof (pkt), MSG_DONTWAIT | MSG_TRUNC, &sa, &sl); ^^^^^^^^^^^^ make: *** [FPing.o] Error 2