Checking if your kit is complete... Looks good Writing Makefile for IO::Epoll cp lib/IO/Epoll.pm blib/lib/IO/Epoll.pm AutoSplitting blib/lib/IO/Epoll.pm (blib/lib/auto/IO/Epoll) /home/cpanrun/pa-risc1.1/build/5.6.1/bin/perl -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/PA-RISC1.1-thread-multi -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1 /home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/ExtUtils/xsubpp -typemap /home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/ExtUtils/typemap Epoll.xs > Epoll.xsc && mv Epoll.xsc Epoll.c Please specify prototyping behavior for Epoll.xs (see perlxs manual) cc -c -I. -D_POSIX_C_SOURCE=199506L -D_HPUX_SOURCE +DA1.1 +DS2.0a +z -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Ae -O +Onolimit -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" +z -I/home/cpanrun/pa-risc1.1/build/5.6.1/lib/5.6.1/PA-RISC1.1-thread-multi/CORE Epoll.c cpp: "Epoll.xs", line 7: error 4036: Can't open include file 'sys/epoll.h'. make: *** [Epoll.o] Error 1