SWIG 构建调试工具/技巧
我正在尝试使用 OpenSSL 1.0.0c（或 0.9.7m），适用于 Windows 上的 Python 2.5.4，但 SWIG 正在密谋反对我。我尝试过 SWIG 2.0.1 和 SWIG 1.3.40，但出现相同的错误：
swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c
C:\Development\swigwin-1.3.40\swig.exe -python -IC:\Development\Python-2.5.4\include -IC:\Development\Python-2.5.4\PC -Ic:\Development\openssl-0.9.7m\include -includeall -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i
c:\Development\openssl-0.9.7m\include\openssl\opensslv.h(1): Error: Syntax error in input(1).
OpenSSL/SWIG 的所有排列都显示此错误。我尝试过手动调用 swig 并传递所有可能的“额外详细”选项，但它们都没有提供足够的信息。我还能做什么来尝试找到这个问题的真正根源？
（此站点上有建议编辑 M2Crypto 的 .i 文件，但 0.21.1 已经集成了建议的更改）
I am trying to build M2Crypto 0.21.1 with OpenSSL 1.0.0c (or 0.9.7m) for Python 2.5.4 on windows, but SWIG is conspiring against me. I've tried both SWIG 2.0.1 and SWIG 1.3.40 and I get the same error:
swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c
C:\Development\swigwin-1.3.40\swig.exe -python -IC:\Development\Python-2.5.4\include -IC:\Development\Python-2.5.4\PC -Ic:\Development\openssl-0.9.7m\include -includeall -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i
c:\Development\openssl-0.9.7m\include\openssl\opensslv.h(1): Error: Syntax error in input(1).
All permutations of OpenSSL/SWIG show this error. I've tried invoking swig by hand and passing all the "extra verbose" options I could, but none of them are even close to informative. What else can I do to try to find the true source of this problem?
(There are suggestions on this site to edit the .i file for M2Crypto, but 0.21.1 already has the suggested changes integrated)
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实际上，这里的问题不是 SWIG，但我会将这个问题/答案留给下一个出现的 M2Crypto 用户 - 也许这会对他们有所帮助。
问题是 M2Crypto setup.py 默认指向
/include include/不是没有正确的查找位置（至少在 Windows 上） - 您需要在inc32/中查找，否则opensslv.h只是指向不同文件的一行，这就是 SWIG 在第 1 行爆炸的原因。Actually the problem here isn't SWIG, but I'll leave this question/answer for the next M2Crypto user that comes along - maybe it will help them.
The problem is that the M2Crypto setup.py by default points to
<your openssl dir>/include, but if that openssl directory is the source tree,include/isn't the right place to look (on windows at least) - you need to be looking ininc32/, otherwiseopensslv.his just a line pointing to a different file, which is why SWIG bombs out on line 1.