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Writing Makefile for B::Flags

Microsoft (R) Program Maintenance Utility   Version 6.00.8168.0
Copyright (C) Microsoft Corp 1988-1998. All rights reserved.

cp Flags.pm blib\lib\B\Flags.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  Flags.xs > Flags.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv Flags.xsc Flags.c
Please specify prototyping behavior for Flags.xs (see perlxs manual)
	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"   Flags.c
Flags.c
Flags.xs(253) : error C2065: 'OP_THREADSV' : undeclared identifier
Flags.xs(253) : warning C4018: '==' : signed/unsigned mismatch
Flags.xs(303) : error C2065: 'SVs_PADBUSY' : undeclared identifier
NMAKE : fatal error U1077: 'cl' : return code '0x2'
Stop.