Checking if your kit is complete... Looks good Writing Makefile for Math::Random::MT Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp MT.pm blib\lib\Math\Random\MT.pm C:\cpanrun\build\5-10-0\bin\perl.exe C:\cpanrun\build\5-10-0\lib\ExtUtils\xsubpp -typemap C:\cpanrun\build\5-10-0\lib\ExtUtils\typemap -typemap typemap MT.xs > MT.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv MT.xsc MT.c 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=\"1.07\" -DXS_VERSION=\"1.07\" "-IC:\cpanrun\build\5-10-0\lib\CORE" MT.c MT.c mt.h(23) : error C2061: syntax error : identifier 'uint32_t' mt.h(25) : error C2059: syntax error : '}' mt.h(27) : error C2146: syntax error : missing ')' before identifier 'seed' mt.h(27) : error C2061: syntax error : identifier 'seed' mt.h(27) : error C2059: syntax error : ';' mt.h(27) : error C2059: syntax error : ')' mt.h(28) : error C2143: syntax error : missing ')' before '*' mt.h(28) : error C2143: syntax error : missing '{' before '*' mt.h(28) : error C2059: syntax error : 'type' mt.h(28) : error C2059: syntax error : ')' MT.xs(27) : warning C4013: 'mt_setup' undefined; assuming extern returning int MT.xs(27) : warning C4047: '=' : 'struct mt *' differs in levels of indirection from 'int ' MT.xs(40) : warning C4013: 'mt_setup_array' undefined; assuming extern returning int MT.xs(40) : error C2065: 'uint32_t' : undeclared identifier MT.xs(40) : error C2059: syntax error : ')' NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop.