SN-1699 已核对来源，附原文与上下文。
难道我在 OSX 构建里就弄坏了这一处？！只改这一处之后真的能跑？
Was that the only thing I broke in the OSX build?! Does it actually work after just that one change?
makefile.vc 我也不得不这么干。编译通过了，但 SHA-256 不正确；每次都返回同一个错误的哈希。
I had to do that for makefile.vc also. It compiled, but SHA-256 didn't work correctly; it returned the same incorrect hash each time.
我们先禁用它，等有人想出修法再启用。光是 midstate 优化就还有 1.7 倍的速度。
We'll disable it now, and if anyone figures out how to fix it, we can re-enable it then. It's still 1.7x faster from the midstate optimisation.
Crypto++ 的 ASM SHA-256 在 Linux 和 Windows（MinGW）的 GCC 下正常。
The Crypto++ ASM SHA-256 works with GCC on Linux and Windows (MinGW).
我把这个 makefile.osx 改动传到了 SVN。（编译能过的话告诉我一声）
I uploaded this makefile.osx change to SVN. (let me know if that compiles now)
