swig没有关于基类'std :: string'的知识，被忽略

问题描述

我想使用swig建立一个c ++库周围的ruby包装。
大多数似乎都工作，但我有一个问题，我很肯定是与上述警告有关。

它看起来像一个类我包装是继承自std :: string。

当我运行swig时，看到上面的警告信息。

当我在一个对象上调用一个方法应该返回一个字符串，我看到这个

SWIG :: Type_p_std__string：0x ...

我想我需要一些如何解决上述警告，以工作，任何想法？

解决方案

SWIG抱怨它不知道std :: string类，所以不能为它生成代码。

SWIG库std_string.i具有用于将c ++字符串映射到目标语言字符串类的语言特定代码。在添加％包含std_string.i 之前生成您的类的代码应修正错误。

请注意，在$ swig接口文件中％include 不同于 #include 。

I am trying to use swig to build ruby wrappers around a c++ library.Most of it seems to be working but I have one issue that I am pretty sure is related to the above warning.

It looks like one of the classes I am wrapping is inherited from std::string.

I see the above warning message when I run swig.

When I call a method on an object in ruby that should be returning a string, I see this

SWIG::Type_p_std__string:0x.....

I am thinking I need to some how fix the above warning to the this to work, any ideas?

解决方案

SWIG is complaining that it doesn't know about the the std::string class and so cannot generate code for it.

The SWIG library std_string.i has language specific code for mapping the c++ string to the target languages string class. Adding %include "std_string.i" before the code that generates your class should fix the error.

Note that %include is different from #include in a swig interface file.

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