由于预处理器指令导致SWIG错误 [英] SWIG errors because of preprocessor directive

问题描述

我们有一家供应商为我们提供了C ++库和标头，我正尝试使用SWIG包装它们。似乎他们对预处理器指令的理解太聪明了：

We have a vendor that has provided us a C++ library and headers, that I'm trying to wrap using SWIG. It appears that they are being too clever by a half with the preprocessor directives:

// top.h
#define DECLARE_WITH_COMMA(a) a,

，然后

// foo.h
#include "top.h"

#define MY_TYPES(d) \
  d(One)   \
  d(Two)   \
  d(Three) \
  NumElems

enum MyTypes {
  MY_TYPES(DECLARE_WITH_COMMA)
};

当我尝试运行SWIG（2.0.4版）时，这都是一种漫不经心的说法。在 foo.h上，我得到：

Which is all a longwinded way of saying that when I try to run SWIG (version 2.0.4) on "foo.h", I get:

foo.h:12: Error: Syntax error in input(1).

所以我的问题是我在这里有什么选择，因为我可能不想更改供应商提供的标题？

So my question is what are my options here, given that I probably don't want to change the vendor-supplied headers?

推荐答案

默认情况下，SWIG不会递归到嵌套标头中，因此您的 .i 文件应类似于：

SWIG doesn't recurse into nested headers by default, so your .i file should look something like:

%module mymod

%{
#include "foo.h"
%}

%include "top.h"
%include "foo.h"

还有一个SWIG开关：

There is also a SWIG switch:

-includeall     - Follow all #include statements

，但是如果系统标头的作用可能超出预期。

but if you have system headers that may do more than you intend.

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