errors

scons: Reading SConscript files ...
Checking whether the C compiler works... (cached) yes
Checking whether the C++ compiler works... (cached) yes
Checking if 64 bit... (cached) no
Adding 32 bit compile flags
Checking for C library mingw32... (cached) yes
Checking for C library ws2_32... (cached) yes
Checking for C library SDLmain... (cached) yes
Checking for C library SDL... (cached) yes
Checking for C header file SDL.h... (cached) yes
Checking for C library lua5.1... (cached) yes
Checking for C header file lua.h... (cached) yes
Checking for C library fftw3f... (cached) yes
Checking for C library bz2... (cached) yes
Checking for C header file bzlib.h... (cached) yes
Checking for C library z... (cached) yes
Checking for C library pthread... (cached) yes
Checking for C library m... (cached) yes
Checking for C library gdi32... (cached) yes
Checking for C library winmm... (cached) yes
Checking for C library dxguid... (cached) yes
scons: done reading SConscript files.
scons: Building targets ...
g++ -o build\src\Format.o -c -Wno-invalid-offsetof -std=gnu++98 -msse -msse2 -O3
 -ftree-vectorize -funsafe-math-optimizations -ffast-math -fomit-frame-pointer -
funsafe-loop-optimizations -w -DWIN -D_WIN32_WINNT=0x0501 -DX86 -DX86_SSE -DX86_
SSE2 -DGRAVFFT -DLUACONSOLE -DUSE_SDL -Ibuild\src -Isrc -Ibuild\data -Idata -Ibu
ild\generated -Igenerated src\Format.cpp
scons: *** [build\src\Format.o] AttributeError : 'module' object has no attribut
e 'STARTF_USESHOWWINDOW'
Traceback (most recent call last):
  File "C:\Python27\Lib\site-packages\scons-2.3.4\SCons\Taskmaster.py", line 248
, in execute
    self.targets[0].build()
  File "C:\Python27\Lib\site-packages\scons-2.3.4\SCons\Node\__init__.py", line
386, in build
    self.get_executor()(self, **kw)
  File "C:\Python27\Lib\site-packages\scons-2.3.4\SCons\Executor.py", line 362,
in __call__
    return self.do_execute(target, kw)
  File "C:\Python27\Lib\site-packages\scons-2.3.4\SCons\Executor.py", line 344,
in do_execute
    status = act(*args, **kw)
  File "C:\Python27\Lib\site-packages\scons-2.3.4\SCons\Action.py", line 909, in
 __call__
    show, execute, chdir, executor)
  File "C:\Python27\Lib\site-packages\scons-2.3.4\SCons\Action.py", line 977, in
 __call__
    return c.__call__(self, target, source, env, *args, **kw)
  File "C:\Python27\Lib\site-packages\scons-2.3.4\SCons\Action.py", line 586, in
 __call__
    stat = self.execute(target, source, env, executor=executor)
  File "C:\Python27\Lib\site-packages\scons-2.3.4\SCons\Action.py", line 809, in
 execute
    result = spawn(shell, escape, cmd_line[0], cmd_line, ENV)
  File "C:\atomictoy\the-powder-toy\SConscript", line 18, in ourspawn
    startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
AttributeError: 'module' object has no attribute 'STARTF_USESHOWWINDOW'
scons: building terminated because of errors.
strip: 'build/Powder.exe': No such file