Checking if your kit is complete... Looks good Writing Makefile for Algorithm::FastPermute cp FastPermute.pm blib\lib\Algorithm\FastPermute.pm cp perms.pl blib\lib\Algorithm\perms.pl D:\cpanrun\build\5-6-1\bin\perl.exe Command line warning D4025 : overriding '/O1' with '/O2' NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. run\build\5-6-1\lib\ExtUtils\typemap FastPermute.xs > FastPermute.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 FastPermute.xsc FastPermute.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=\"0.99\" -DXS_VERSION=\"0.99\" -ID:\cpanrun\build\5-6-1\lib\CORE FastPermute.c FastPermute.c FastPermute.xs(145) : error C2059: syntax error : ')'