cp GSL.pm blib\lib\Math\GSL.pm D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib D:\cNMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. build\5-6-1\lib\ExtUtils\typemap GSL.xs > GSL.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 GSL.xsc GSL.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=\"0.01\" -DXS_VERSION=\"0.01\" -ID:\cpanrun\build\5-6-1\lib\CORE GSL.c GSL.c GSL.xs(4) : fatal error C1083: Cannot open include file: 'gsl/gsl_errno.h': No such file or directory