Checking if your kit is complete... Looks good Writing Makefile for Math::Random::MT cp MT.pm blib\lib\Math\Random\MT.pm D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\libNMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. nrun\build\5-6-1\lib\ExtUtils\typemap -typemap typemap MT.xs > MT.xsc && D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib -MExtUtils::Command -e mv MT.xsc MT.c cl -c -nologo -O1 -MD -Zi -DNDEBUG -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DPERL_MSVCRT_READFIX -O1 -MD -Zi -DNDEBUG -DVERSION=\"1.07\" -DXS_VERSION=\"1.07\" -ID:\cpanrun\build\5-6-1\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 C4047: '=' : 'struct mt *' differs in levels of indirection from 'int ' MT.xs(40) : error C2065: 'uint32_t' : undeclared identifier MT.xs(40) : error C2059: syntax error : ')'