Checking if your kit is complete... Looks good Writing Makefile for Device::Davis cp Davis.pm blib\lib\Device\Davis.pm AutoSplitting blib\lib\Device\Davis.pm (blib\lib\auto\Device\Davis) 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 Davis.xs > Davis.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 Davis.xsc Davis.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 -O1 -MD -Zi -DNDEBUG -DVERSION=\"1.2.1\" -DXS_VERSION=\"1.2.1\" -ID:\cpanrun\build\5-6-1\lib\CORE Davis.c Davis.c Davis.xs(4) : fatal error C1083: Cannot open include file: 'unistd.h': No such file or directory