C:\perl64\packages\p5-Win32-SecretFile-master>nmake

Microsoft (R) Program Maintenance Utility Version 9.00.21022.08
Copyright (C) Microsoft Corporation.  All rights reserved.

        C:\Perl64\bin\perl.exe C:\perl64\site\lib\ExtUtils\xsubpp  -typemap C:\Perl64\lib\ExtUtils\typemap  SecretFile.xs > SecretFile.xsc && C:\Perl64\bin\perl.exe -MExtUtils::Command -e mv -- SecretFile.xsc SecretFile.c
Please specify prototyping behavior for SecretFile.xs (see perlxs manual)
        cl -c  -I.  -nologo -GF -W3 -MD -Zi -Ox -GL -fp:precise -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DWIN64 -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -MD -Zi -Ox -GL -fp:precise    -DVERSION=\"0.01\"  -DXS_VERSION=\"0.01\"  "-IC:\Perl64\lib\CORE"   SecretFile.c
SecretFile.c
SecretFile.xs(55) : warning C4267: 'function' : conversion from 'size_t' to 'int', possible loss of data
SecretFile.xs(58) : warning C4267: 'function' : conversion from 'size_t' to 'int', possible loss of data
SecretFile.xs(58) : warning C4267: 'function' : conversion from 'size_t' to 'int', possible loss of data
SecretFile.xs(82) : warning C4013: 'ConvertSidToStringSid' undefined; assuming extern returning int
SecretFile.xs(87) : warning C4013: 'ConvertStringSecurityDescriptorToSecurityDescriptor' undefined; assuming extern returning int
SecretFile.xs(99) : warning C4267: 'function' : conversion from 'size_t' to 'DWORD', possible loss of data
        link -out:blib\arch\auto\Win32\SecretFile\SecretFile.dll -dll -nologo -nodefaultlib -debug -opt:ref,icf -ltcg  -libpath:"C:\Perl64\lib\CORE"  -machine:AMD64 SecretFile.obj   C:\Perl64\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 comctl32.lib bufferoverflowU.lib msvcrt.lib -def:SecretFile.def
   Creating library blib\arch\auto\Win32\SecretFile\SecretFile.lib and object blib\arch\auto\Win32\SecretFile\SecretFile.exp
SecretFile.obj : error LNK2001: unresolved external symbol ConvertStringSecurityDescriptorToSecurityDescriptor
SecretFile.obj : error LNK2001: unresolved external symbol ConvertSidToStringSid
blib\arch\auto\Win32\SecretFile\SecretFile.dll : fatal error LNK1120: 2 unresolved externals
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\Bin\amd64\link.EXE"' : return code '0x460'
Stop.