Checking if your kit is complete... Looks good Writing Makefile for Math::PRSG Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp PRSG.pm blib\lib\Math\PRSG.pm cp PRSG.pod blib\lib\Math\PRSG.pod 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=\"1.0\" -DXS_VERSION=\"1.0\" "-IC:\cpanrun\build\5-10-0\lib\CORE" prsg.c prsg.c Running Mkbootstrap for Math::PRSG () C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e chmod 644 PRSG.bs C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Mksymlists -e "Mksymlists('NAME'=>\"Math::PRSG\", 'DLBASE' => 'PRSG', 'DL_FUNCS' => { }, 'FUNCLIST' => [], 'IMPORTS' => { }, 'DL_VARS' => []);" link -out:blib\arch\auto\Math\PRSG\PRSG.dll -dll -nologo -nodefaultlib -debug -opt:ref,icf -libpath:"C:\cpanrun\build\5-10-0\lib\CORE" -machine:x86 PRSG.obj prsg.obj C:\cpanrun\build\5-10-0\lib\CORE\perl510.lib oldnames.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib netapi32.lib uuid.lib ws2_32.lib mpr.lib winmm.lib version.lib odbc32.lib odbccp32.lib msvcrt.lib -def:PRSG.def prsg.obj : warning LNK4042: object specified more than once; extras ignored prsg.obj : warning LNK4042: object specified more than once; extras ignored PRSG.def : error LNK2001: unresolved external symbol boot_Math__PRSG PRSG.def : error LNK2001: unresolved external symbol boot_Math__PRSG blib\arch\auto\Math\PRSG\PRSG.lib : fatal error LNK1120: 2 unresolved externals LINK : fatal error LNK1141: failure during build of exports file NMAKE : fatal error U1077: 'link' : return code '0x475' Stop.