Create the library's implementation file, call it junk.cpp, with the following content:.Create the header file for the library, let's call it junk.h, with the following content:.

Choose a location for the library and cd to that directory.You can also use the Clang compiler that should come with your Mac OS X, in which case replace g++ with clang++ in the example. The command for compiling/linking C++ code is g++. We could have done it in Xcode, but let's just use a command line compiler, GCC. Now let's build a simple C++ static library. We see 'Hello, World!' printed out in the output pane. Now we can run our project by clicking the Run button from the toolbar, selecting Run from the Product menu, or by typing Command-R.We can comment out or remove the 'import Foundation' line, since we are not using any of the Foundation features. The resulting project should consist of one Swift source file, main.swift, which contains: In the dialog that appears select a location for your project and click Create.For the purposes of this tutorial let's call it cli_swift. Choose a name for your project and type it in the Product Name field in the next dialog make sure Swift is selected in the Language field.In Xcode go to File->New->Project, in the dialog that appears select Command Line Tool and click Next.We could have created a more sophisticated GUI app, but since the focus here is on interfacing Swift with C++ code, a command line utility will suffice. Here it's assumed that you know the basics of using Xcode, Mac OS X Terminal command line, and programming in Swift, C, and C++.Ĭreate a Swift Command Line Utility in Xcodeįirst we are going to create a simple command line utility in Swift using Xcode. Write a C++ wrapper to provide the 'glue' between our C++ library and the Swift utility.Create a simple command line utility in Swift using Xcode.What if you have a library developed in C++ and want to leverage that code in you Swift applications? Here we will see how to incorporate a simple C++ library into a trivial Swift command line utility on Mac OS X. However, huge code bases exist that are written in C and C++. Swift is an exciting new programming language combining the best of older languages such as Java, C++, Objective-C, JavaScript etc.

Xcode compile c++