It looks like the installation of dmake and MinGW has failed. You will not be able to run Makefile commands or compile C extension code. Please check your internet connection and your proxy settings! #### cpanm BerkeleyDB I got the error: Note (probably harmless): No library found for -llibdb Note (probably harmless): No library found for bufferoverflowU.lib #### INCLUDE = C:\PROGRA~2\Oracle\BERKEL~1.15\include LIB = C:\PROGRA~2\Oracle\BERKEL~1.15\lib #### Creating library blib\arch\auto\BerkeleyDB\BerkeleyDB.lib and object blib\arc h\auto\BerkeleyDB\BerkeleyDB.exp BerkeleyDB.obj : error LNK2001: unresolved external symbol __heap_exist BerkeleyDB.obj : error LNK2001: unresolved external symbol db_version BerkeleyDB.obj : error LNK2001: unresolved external symbol db_strerror BerkeleyDB.obj : error LNK2001: unresolved external symbol db_env_create BerkeleyDB.obj : error LNK2001: unresolved external symbol db_create BerkeleyDB.obj : error LNK2001: unresolved external symbol db_sequence_create blib\arch\auto\BerkeleyDB\BerkeleyDB.dll : fatal error LNK1120: 6 unresolved ext ernals NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 10.0 \VC\Bin\amd64\link.EXE"' : return code '0x460' Stop.