C ++导入的库未正确编译

Question

I've included the headers of a static library (taglib.a to parse music files on the file system) in my Xcode project).

The library is written in C++. It seems the compiler in Xcode believes it's an objective-C library instead.

I get this compile error in the included header: taglib.h

Unknown type name 'namespace'

Usually for this kind of problem the solution is change the extension of the file to .mm to inform the compiler is not only objective-C, but in this case it's an header. And it's the header of an imported library, not even in my project tree.

How to solve this?

File using the library (#import "taglib/taglib.h")

Answer 1

Set it as C++ header. It will be fine.

Answer 2

在出现错误的地方，必须使用c ++编译器编译包含有问题的.h文件，因此，如果您具有main.m，则需要将其更改为main.mm-如果您具有foo.c，则需要将其更改为foo.cpp-这不是免费的，因为现在您住在该编译单元的c ++领域中。因此另一种方法是制作一个处理c ++库的ObjC ++类。纯C编译单元。

Answer 3

通过重新启动xCode已解决了该问题。