ZDoom compilation errors

11>c:\programming\sourcecodes\dis - new stuff\tools\re2c\stream_lc.h(285): warning C4244: 'argument' : conversion from 'std::streamsize' to 'size_t', possible loss of data
11>          c:\programming\sourcecodes\dis - new stuff\tools\re2c\stream_lc.h(271) : while compiling class template member function 'std::streamsize re2c::basic_filebuf_lc<_E>::xsputn(const _E *,std::streamsize)'
10>  LzmaEnc.c
11>          with
11>          [
11>              _E=char
11>          ]
11>          c:\programming\sourcecodes\dis - new stuff\tools\re2c\stream_lc.h(316) : see reference to class template instantiation 're2c::basic_filebuf_lc<_E>' being compiled
11>          with
11>          [
11>              _E=char
11>          ]
11>          c:\programming\sourcecodes\dis - new stuff\tools\re2c\stream_lc.h(316) : while compiling class template member function 're2c::basic_fstream_lc<_E,_BaseStream,_DefOpenMode,_Tr>::basic_fstream_lc(void)'
11>          with
11>          [
11>              _E=char,
11>              _BaseStream=std::basic_istream<char,std::char_traits<char>>,
11>              _DefOpenMode=1,
11>              _Tr=std::char_traits<char>
11>          ]
11>          C:\Programming\SourceCodes\Dis - New stuff\tools\re2c\main.cc(351) : see reference to function template instantiation 're2c::basic_fstream_lc<_E,_BaseStream,_DefOpenMode,_Tr>::basic_fstream_lc(void)' being compiled
11>          with
11>          [
11>              _E=char,
11>              _BaseStream=std::basic_istream<char,std::char_traits<char>>,
11>              _DefOpenMode=1,
11>              _Tr=std::char_traits<char>
11>          ]
11>          c:\programming\sourcecodes\dis - new stuff\tools\re2c\stream_lc.h(377) : see reference to class template instantiation 're2c::basic_fstream_lc<_E,_BaseStream,_DefOpenMode,_Tr>' being compiled
11>          with
11>          [
11>              _E=char,
11>              _BaseStream=std::basic_istream<char,std::char_traits<char>>,
11>              _DefOpenMode=1,
11>              _Tr=std::char_traits<char>
11>          ]
11>          C:\Programming\SourceCodes\Dis - New stuff\tools\re2c\main.cc(291) : see reference to class template instantiation 're2c::basic_ifstream_lc<_E>' being compiled
11>          with
11>          [
11>              _E=char
11>          ]
11>  mbo_getopt.cc
11>  parser.cc
10>  Threads.c
11>  scanner.cc
10>  Generating Code...
11>C:\Programming\SourceCodes\Dis - New stuff\tools\re2c\scanner.cc(69): warning C4244: '=' : conversion from 'std::streamsize' to 're2c::uint', possible loss of data