Checking if your kit is complete... Looks good 'PREREQ_FATAL' is not a known MakeMaker parameter name. Writing Makefile for File::Defrag cp Defrag.pm blib/lib/File/Defrag.pm /home/cpanrun/ia64/build/5.6.1/bin/perl -I/home/cpanrun/ia64/build/5.6.1/lib/5.6.1/IA64.ARCHREV_0-thread-multi -I/home/cpanrun/ia64/build/5.6.1/lib/5.6.1 /home/cpanrun/ia64/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp -typemap /home/cpanrun/ia64/build/5.6.1/lib/5.6.1/ExtUtils/typemap Defrag.xs > Defrag.xsc && mv Defrag.xsc Defrag.c Error: 'const char *' not in typemap in Defrag.xs, line 50 Error: 'PerlIO *' not in typemap in Defrag.xs, line 89 Error: 'PerlIO *' not in typemap in Defrag.xs, line 89 Error: 'PerlIO *' not in typemap in Defrag.xs, line 91 make: *** [Defrag.c] Error 1