Checking if your kit is complete... Looks good Note (probably harmless): No library found for -lneural Writing Makefile for AI::LibNeural cp LibNeural.pm blib/lib/AI/LibNeural.pm AutoSplitting blib/lib/AI/LibNeural.pm (blib/lib/auto/AI/LibNeural) /home/cpanrun/ia64-lp64/build/5.8.2/bin/perl /home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/ExtUtils/xsubpp -C++ -typemap /home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/ExtUtils/typemap -typemap ./typemap -typemap typemap LibNeural.xs > LibNeural.xsc && mv LibNeural.xsc LibNeural.c Please specify prototyping behavior for LibNeural.xs (see perlxs manual) g++ -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=\"0.02\" -DXS_VERSION=\"0.02\" +Z "-I/home/cpanrun/ia64-lp64/build/5.8.2/lib/5.8.2/IA64.ARCHREV_0-thread-multi-LP64/CORE" LibNeural.c g++: +DD64: No such file or directory g++: +DSitanium2: No such file or directory g++: +Ofltacc=strict: No such file or directory g++: +Z: No such file or directory cc1plus: error: unrecognized command line option "-fast" make: *** [LibNeural.o] Error 1