Checking if your kit is complete... Looks good MakeMaker (v6.42_01) Warning (non-fatal): Target 'dynamic' depends on targets in skipped section 'dynamic_lib' Warning (non-fatal): Target 'static' depends on targets in skipped section 'static_lib' Writing Makefile for Crypt::UnixCrypt_XS::fcrypt Writing Makefile for Crypt::UnixCrypt_XS Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp lib/Crypt/UnixCrypt_XS.pm blib\lib\Crypt\UnixCrypt_XS.pm cd fcrypt && nmake Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cl -c -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 -O3 -DVERSION=\"\" -DXS_VERSION=\"\" "-IC:\cpanrun\build\5-10-0\lib\CORE" fcrypt.c Command line warning D4002 : ignoring unknown option '-O3' fcrypt.c fcrypt.c(628) : warning C4018: '<' : signed/unsigned mismatch fcrypt.c(647) : warning C4018: '<' : signed/unsigned mismatch lib cr libfcrypt.lib fcrypt.obj Microsoft (R) Library Manager Version 6.00.8447 Copyright (C) Microsoft Corp 1992-1998. All rights reserved. LIB : fatal error LNK1181: cannot open input file "cr" NMAKE : fatal error U1077: 'lib' : return code '0x49d' Stop. NMAKE : fatal error U1077: 'cd' : return code '0x2' Stop.