Checking if your kit is complete... Looks good Writing Makefile for Sys::PortIO cp PortIO.pm blib\lib\Sys\PortIO.pm AutoSplitting blib\lib\Sys\PortIO.pm (blib\lib\auto\Sys\PortIO) D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib D:\cpanrun\build\5-6-1\lib\ExtUtils/xsubpp -typemap D:\cpanrun\build\5-6-1\lib\ExtUtils\typemap PortIO.xs > PortIO.xsc && D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib -MExtUtils::Command -e mv PortIO.xsc PortIO.c cl -c -nologo -O1 -MD -Zi -DNDEBUG -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DPERL_MSVCRT_READFIX -O2 -DVERSION=\"0.1\" -DXS_VERSION=\"0.1\" -ID:\cpanrun\build\5-6-1\lib\CORE PortIO.c PortIO.c PortIO.xs(47) : fatal error C1083: Cannot open include file: 'sys/io.h': No such file or directory