Checking if your kit is complete... Looks good Note (probably harmless): No library found for -lcrfpp Writing Makefile for Algorithm::CRF Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp lib/Algorithm/CRF.pm blib\lib\Algorithm\CRF.pm C:\cpanrun\build\5-10-0\bin\perl.exe C:\cpanrun\build\5-10-0\lib\ExtUtils\xsubpp -C++ -typemap C:\cpanrun\build\5-10-0\lib\ExtUtils\typemap CRF.xs > CRF.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv CRF.xsc CRF.c c++ -c -I. -Wall -Wno-deprecated -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -MD -Zi -DNDEBUG -O1 -DVERSION=\"0.04\" -DXS_VERSION=\"0.04\" "-IC:\cpanrun\build\5-10-0\lib\CORE" CRF.c 'c++' is not recognized as an internal or external command, operable program or batch file. NMAKE : fatal error U1077: 'c++' : return code '0x1' Stop.