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Writing Makefile for Sys::PortIO

Microsoft (R) Program Maintenance Utility   Version 6.00.8168.0
Copyright (C) Microsoft Corp 1988-1998. All rights reserved.

cp PortIO.pm blib\lib\Sys\PortIO.pm
AutoSplitting blib\lib\Sys\PortIO.pm (blib\lib\auto\Sys\PortIO)
	C:\cpanrun\build\5-10-0\bin\perl.exe C:\cpanrun\build\5-10-0\lib\ExtUtils\xsubpp  -typemap C:\cpanrun\build\5-10-0\lib\ExtUtils\typemap  PortIO.xs > PortIO.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv PortIO.xsc PortIO.c
Please specify prototyping behavior for PortIO.xs (see perlxs manual)
	cl -c    -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -O2    -DVERSION=\"0.1\"  -DXS_VERSION=\"0.1\"  "-IC:\cpanrun\build\5-10-0\lib\CORE"   PortIO.c
Command line warning D4025 : overriding '/O1' with '/O2'
PortIO.c
PortIO.xs(47) : fatal error C1083: Cannot open include file: 'sys/io.h': No such file or directory
NMAKE : fatal error U1077: 'cl' : return code '0x2'
Stop.