build fails on win7 32bit using mingw-w64 g++ 4.8.0

[jonforums]

C:\Users\Jon\Documents\CDev\ninja-git>ninja --version
1.3.0.git

C:\Users\Jon\Documents\CDev\ninja-git>g++ --version
g++ (rev2, Built by MinGW-builds project) 4.8.0

C:\Users\Jon\Documents\CDev\ninja-git>python configure.py --platform=mingw
warning: A compatible version of re2c (>= 0.11.3) was not found; changes to src/*.in.cc will not affect your build.
wrote build.ninja.

C:\Users\Jon\Documents\CDev\ninja-git>ninja
[3/26] CXX build\build_log.o
src\build_log.cc: In member function 'void BuildLog::WriteEntry(FILE*, const BuildLog::LogEntry&)':
src\build_log.cc:347:51: warning: 'I' flag used with '%x' gnu_printf format [-Wformat=]
           entry.output.c_str(), entry.command_hash);
                                                   ^
src\build_log.cc:347:51: warning: format '%x' expects argument of type 'unsigned int', but argument 7 has type 'uint64_t {aka long long unsigned int}' [-Wformat=]
[25/26] AR build\libninja.a
        1 file(s) moved.
[25/26] CXX build\ninja.o
FAILED: g++ -MMD -MT build\ninja.o -MF build\ninja.o.d -g -Wall -Wextra -Wno-deprecated -Wno-unused-parameter -fno-rtti -fno-exceptions -pipe -Wno-missing-field-initializers -DNINJA_PYTHON="python.exe" -O3 -DNDEBUG -D_WIN32_WINNT=0x0601 -c src\ninja.cc -o build\ninja.o
src\ninja.cc: In member function 'int {anonymous}::NinjaMain::ToolMSVC(int, char**)':
src\ninja.cc:370:35: error: 'MSVCHelperMain' was not declared in this scope
   return MSVCHelperMain(argc, argv);
                                   ^
src\ninja.cc:371:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
ninja: build stopped: subcommand failed.