Checking if your kit is complete... Looks good Writing Makefile for Solaris::loadavg cp loadavg.pm blib/lib/Solaris/loadavg.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 loadavg.xs > loadavg.xsc && mv loadavg.xsc loadavg.c Please specify prototyping behavior for loadavg.xs (see perlxs manual) gcc -c -DUSE_REENTRANT_API -D_GNU_SOURCE -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" -fpic -I/home/cpanrun/build/5.6.1/lib/5.6.1/i686-linux-thread-multi/CORE loadavg.c loadavg.xs:4: sys/loadavg.h: No such file or directory make: *** [loadavg.o] Error 1