Checking if your kit is complete... Looks good Note (probably harmless): No library found for -lpoker Writing Makefile for Games::Poker::HandEvaluator cp HandEvaluator.pm blib/lib/Games/Poker/HandEvaluator.pm /home/cpanrun/build/5.6.1/bin/perl -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi -I/home/cpanrun/build/5.6.1/lib/5.6.1 /home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp -typemap /home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/typemap HandEvaluator.xs > HandEvaluator.xsc && mv HandEvaluator.xsc HandEvaluator.c Please specify prototyping behavior for HandEvaluator.xs (see perlxs manual) gcc -c -I. -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -DVERSION=\"1.1\" -DXS_VERSION=\"1.1\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE HandEvaluator.c HandEvaluator.xs:7: poker_defs.h: No such file or directory HandEvaluator.xs:9: inlines/eval.h: No such file or directory HandEvaluator.xs:10: deck_std.h: No such file or directory HandEvaluator.xs:11: rules_std.h: No such file or directory make: *** [HandEvaluator.o] Error 1