Checking if your kit is complete... Looks good Writing Makefile for Language::SIOD Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp lib/Language/SIOD.pm blib\lib\Language\SIOD.pm cp lib/Language/SIOD_in.pm blib\lib\Language\SIOD_in.pm 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 -MD -Zi -DNDEBUG -O1 -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" "-IC:\cpanrun\build\5-10-0\lib\CORE" siod_wrap.c siod_wrap.c slib.c(302) : warning C4003: not enough actual parameters for macro 'PerlProc_setjmp' slib.c(302) : warning C4013: 'PerlProc_setjmp' undefined; assuming extern returning int slib.c(636) : warning C4013: 'PerlProc_longjmp' undefined; assuming extern returning int slib.c(1276) : warning C4003: not enough actual parameters for macro 'PerlProc_setjmp' slib.c(1855) : warning C4003: not enough actual parameters for macro 'PerlProc_setjmp' slib.c(2055) : warning C4013: 'PerlSIO_getc' undefined; assuming extern returning int slib.c(2218) : error C2065: 'PerlSIO_fopen' : undeclared identifier slib.c(2218) : warning C4047: 'function' : 'struct _iobuf *(__cdecl *)(const char *,const char *)' differs in levels of indirection from 'int ' slib.c(2218) : warning C4024: 'fopen_cg' : different types for formal and actual parameter 1 NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop.