Note (probably harmless): No library found for '-Writing Makefile for Solaris::Lgrp cp Lgrp.pm blib\lib\Solaris\Lgrp.pm D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\libNMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. nrun\build\5-6-1\lib\ExtUtils\typemap -typemap typemap Lgrp.xs > Lgrp.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 Lgrp.xsc Lgrp.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=\"0.1.4\" -DXS_VERSION=\"0.1.4\" -ID:\cpanrun\build\5-6-1\lib\CORE Lgrp.c Lgrp.c Lgrp.xs(33) : fatal error C1083: Cannot open include file: 'sys/errno.h': No such file or directory