如何将Objective C静态库导入Swift Framework?

问题描述

我正在Swift中为OS X编写动态框架(Proto.framework).我想包含来自用目标C编写的静态库(libstat.a)中的代码.这是我得到的:

I’m writing a dynamic Framework (Proto.framework) for OS X in Swift. I want to include code from a static library (libstat.a) which is written in Objective C. Here’s what I’ve got:

// Dynamic.swift in Proto.framework
class Dynamic {
    func doSomethingWithStat() {
        Stat().statThing()
    }
}

// Stat.h in libstat.a static library
@interface Stat : NSObject
- (void)statThing;
@end

// Stat.m
@implementation Stat
- (void)statThing {
    NSLog(@"OK");
}
@end

在Proto.framework的目标中，我已将其链接到libstat.a.当我尝试构建Proto时，它自然不会编译，因为它找不到Stat().statThing()的定义.它不知道我的静态库的符号.我该如何告知呢?

In my target for Proto.framework, I have linked it to libstat.a. When I try to build Proto, naturally it doesn’t compile because it can’t find the definition for Stat().statThing(). It doesn’t know the symbols for my static library. How do I tell it about that?

对于应用程序，我将使用桥接头并执行#import <Stat/Stat.h>.但是编译器出错并告诉我Bridging headers aren’t allowed in frameworks.好吧.

For applications, I’d use a bridging header and do #import <Stat/Stat.h>. But the compiler errors out and tells me Bridging headers aren’t allowed in frameworks. OK.

因此，我将其包含在伞头"(Proto.h)中，但这告诉了我error: include of non-modular header inside framework module.好吧.

So I include it in my "umbrella header" (Proto.h) but that tells me error: include of non-modular header inside framework module. OK.

即使在全新构建后，使我的Stat库目标Defines module: YES似乎也无法更改错误.所以我不确定该怎么做.

Making my Stat library target Defines module: YES doesn’t seem to change the error even after a clean build. So I’m not sure how to do this.

有人可以指出我正确的方向吗?

Can someone point me in the right direction?

推荐答案

最简单的方法是使用模块映射文件.在下面，我假设您在单独的项目中有Proto.framework，称为Proto.

The easiest way to accomplish that is to use a module map file. Below I assume you have the Proto.framework in a separate project, which is called Proto.

1. 在框架中创建一个包含以下内容的module.modulemap文件(根据需要替换头文件的路径):

1. Create a module.modulemap file in your framework containing the following (substitute the path to the header file as needed):

_

framework module Proto {
    umbrella header "Proto.h"

    // Load a C header to be used in Swift - here /usr/include/sys/stat.h:
    header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/sys/stat.h"

    export *
    module * { export * }
}

1. 在项目构建设置中，在Packaging部分中找到Module Map File.输入$(SRCROOT)/Proto/module.modulemap

1. In your project build settings find Module Map File in section Packaging. Enter $(SRCROOT)/Proto/module.modulemap

就是这样.从现在开始，您应该可以使用Swift中stat.h中声明的任何内容.

That's it. From now on you should be able to use anything declared in stat.h in Swift.

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