Checking if your kit is complete... Looks good Writing Makefile for Algorithm::Permute Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp Permute.pm blib\lib\Algorithm\Permute.pm AutoSplitting blib\lib\Algorithm\Permute.pm (blib\lib\auto\Algorithm\Permute) cl -c -Wall -fno-strict-aliasing -MD -Zi -DNDEBUG -O1 -DVERSION=\"0.11\" -DXS_VERSION=\"0.11\" "-IC:\cpanrun\build\5-10-0\lib\CORE" -DPERL_EXT coollex.c Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 12.00.8804 for 80x86 Copyright (C) Microsoft Corp 1984-1998. All rights reserved. Command line error D2021 : invalid numeric argument '/Wall' NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop.