Checking if your kit is complete... Looks good Note (probably harmless): No library found for -lsysfs you are using MSVC... my condolences. at Makefile.PL line 59. you are using MSVC... my condolences. at Makefile.PL line 59. Writing Makefile for Linux::Sysfs Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp lib/Linux/Sysfs/Driver.pod blib\lib\Linux\Sysfs\Driver.pod cp lib/Linux/Sysfs/Module.pod blib\lib\Linux\Sysfs\Module.pod cp lib/Linux/Sysfs/Attribute.pod blib\lib\Linux\Sysfs\Attribute.pod cp lib/Linux/Sysfs/Class.pod blib\lib\Linux\Sysfs\Class.pod cp lib/Linux/Sysfs/ClassDevice.pod blib\lib\Linux\Sysfs\ClassDevice.pod cp lib/Linux/Sysfs/Device.pod blib\lib\Linux\Sysfs\Device.pod cp lib/Linux/Sysfs/Bus.pod blib\lib\Linux\Sysfs\Bus.pod cp lib/Linux/Sysfs.pm blib\lib\Linux\Sysfs.pm C:\cpanrun\build\5-10-0\bin\perl.exe C:\cpanrun\build\5-10-0\lib\ExtUtils\xsubpp -noprototypes -typemap C:\cpanrun\build\5-10-0\lib\ExtUtils\typemap xs/Attribute.xs > xs/Attribute.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv xs/Attribute.xsc xs/Attribute.c cl -c -Ic -Wall -MD -Zi -DNDEBUG -O1 -DVERSION=\"0.03\" -DXS_VERSION=\"0.03\" /Foxs/Attribute.obj "-IC:\cpanrun\build\5-10-0\lib\CORE" xs/Attribute.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.