无法使用C编译python包。错误2 - 无法打开包含文件：'alloca.h'？

Question

这一切都始于“无法找到vcvarsall.bat”但我很快修复了它。之后我无法解决一些“错误2”。

已经尝试过的说明here和here：

安装Visual C ++编译器Python 2.7
安装了Microsoft Visual Studio 2008 Express Edition SP1
已安装适用于Windows 7和.NET Framework 3.5 SP1的Windows SDK
操纵vcvarsall.bat和vsvars64

但仍然无法安装pyethash，PyYAML，scrypt。 pyethash的详细信息如下。

试图安装Crypto，它也使用C ++库 - 它的工作原理。是否仍然看起来我有编译器问题或者我应该在其他地方看看？

使用Windows 8.1 x64，python 2.7.11（v2.7.11：6d1b6a68f775，2015年12月5日，20：40：30）[MSC v.1500 64 bit（AMD64）]

Installing with pip

PS C:pyethereumethash-master> pip install pyethash
Collecting pyethash
  Using cached pyethash-0.1.27.tar.gz
Building wheels for collected packages: pyethash
  Running setup.py bdist_wheel for pyethash ... error
  Complete output from command c:python27python.exe -u -c "import setuptools, tokenize;__file__='c:\users\b19a~1\ap
pdata\local\temp\pip-build-y2vsbx\pyethash\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().
replace('
', '
'), __file__, 'exec'))" bdist_wheel -d c:users19a~1appdatalocal	emp	mpwmonvkpip-wheel- --pytho
n-tag cp27:
  running bdist_wheel
  running build
  running build_ext
  building 'pyethash' extension
  error: [Error 2]

  ----------------------------------------
  Failed building wheel for pyethash
  Running setup.py clean for pyethash
Failed to build pyethash
Installing collected packages: pyethash
  Running setup.py install for pyethash ... error
    Complete output from command c:python27python.exe -u -c "import setuptools, tokenize;__file__='c:\users\b19a~1\
appdata\local\temp\pip-build-y2vsbx\pyethash\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('
', '
'), __file__, 'exec'))" install --record c:users19a~1appdatalocal	emppip-pvhu8d-recordinsta
ll-record.txt --single-version-externally-managed --compile:
    running install
    running build
    running build_ext
    building 'pyethash' extension
    error: [Error 2]

    ----------------------------------------
Command "c:python27python.exe -u -c "import setuptools, tokenize;__file__='c:\users\b19a~1\appdata\local\temp\pi
p-build-y2vsbx\pyethash\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('
', '
'),
 __file__, 'exec'))" install --record c:users19a~1appdatalocal	emppip-pvhu8d-recordinstall-record.txt --single-v
ersion-externally-managed --compile" failed with error code 1 in c:users19a~1appdatalocal	emppip-build-y2vsbxpyethash

Installing manually

PS C:pyethereumethash-master> python setup.py install
running install
running build
running build_ext
building 'pyethash' extension
C:Program Files (x86)Microsoft Visual Studio 9.0VCBINamd64cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -IC:Python27include -IC:Python27PC /Tcsrc/python/core.c /Fobuild	emp.win-amd64-2.7Releasesrc/python/core.obj -Isrc/ -std=gnu99 -Wallcl : Command line warning D9002 : ignoring unknown option '-std=gnu99'core.c
c:program files (x86)microsoft visual studio 9.0vcincludecodeanalysissourceannotations.h(81) : warning C4820: 'PreAttribute' : '4' bytes padding added after data member 'Access'
c:program files (x86)microsoft visual studio 9.0vcincludecodeanalysissourceannotations.h(96) : warning C4820: 

....
....
c:python27includeimport.h(61) : warning C4820: '_frozen' : '4' bytes padding added after data member 'size'
c:python27includecode.h(26) : warning C4820: '<unnamed-tag>' : '4' bytes padding added after data member 'co_firstlineno'src/python/core.c(2) : fatal error C1083: Cannot open include file: 'alloca.h': No such file or directory
error: command 'C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\amd64\cl.exe' failed with exit status 2