Next you'll need a module.modulemap file, which is pretty straightforward.Whether you’re a programming novice or veteran, you’ve probably encountered some kind of integrated development environment (IDE). For example if you want to use libxml2 and pkg-config is not installed, you won't be able to compile / use your system module.
#C code for mac app install
Here is a good advice for you: sudo apt-get install pkg-config under linux to make things work, because the system will search for package header files with the help of the pkgConfig property. Inside the Package.swift file you can set the providers for the library (like brew on macOS or aptitude for ubuntu / debian and the others). These are special packages according to Apple, you just have to ship your own modulemap and a header file to expose the needed APIs, but first - obviously - you'll need the usual package definition file: // swift-tools-version:4.0 import PackageDescription To start you can use the swift package init -type system-module command, this will create a generic template project. If you want to wrap a C library and call it directly from Swift you can crete a brand new wrapper package with the help of the Swift Package Manager. This setup also works with C, C++, Objective-C, Objective-C++ code.
Please check out the example repository, you can build and run the project by yourself. branch( "master")),Ĭongratulations, you just shipped your first C code with Swift Package Manager. You just have to add this module as a dependency, oh by the way you can even call this module from another C project made with SPM! 💥. With this technique you can import your cfactorial module from any other Swift package and call the factorial method, like we did through Xcode. If you use the include structure SPM will generate everything for you.
This is NOT necessary, but if you don't put your umbrella header into the include directory, you'll need to provide a modulemap file, and provide the correct location of your header. You should also change the #include "factorial.h" line inside the factorial.c file to #include "include/factorial.h" because we made a new include directory. The directory structure should be something like this. swift-tools-version:4.0 import PackageDescription Here is everything what you need to build the factorial example with SPM. The only thing that you'll need to do this is a proper directory structure (plus you'll need the package description file), and the package manager will take care all the rest.
#C code for mac app how to
If you don't know how to use the SPM tool, you should read my comprehensive tutorial about the Swift Package Manager first.
From Swift 3.0 you can build C language targets with SPM. The real fun begins when you start using the Swift Package Manager to build C family based sources. Apple has great docs about this technique, you should read that if you want to know more about mix and match. You can do the exact same thing to use Objective-C classes inside your Swift projects. it actually prints out "Hello 120!" )Ĭompile and run. Somewhere inside a Swift file you can use the factorial method: print( "Hello \( factorial( 5)) !") Inside the bridging header, simply import the C header file: #include "factorial.h" This is gona be the implementation of the method (factorial.c): #include "factorial.h" Let's create a public header for the C code (factorial.h): #ifndef factorial_h The name of this file is tricky, because it also supports other C family langages, like pure C or C++, Objective-C and plus-plus. Next, add a new file and choose the C file template.Īfter you enter the name and check the also create header file box, Xcode will ask you about the Objective-C bridging header file. Fill out the required fields, and of course choose the Swift language. Let's fire up Xcode and start a brand new single view app iOS project. This means that you can eaily ship your own system modules, you just have to learn how to use the Swift Package Manager.😅 Bridging header inside Xcode From Swift 4 there is native support for wrapping C libraries in Swift system module packages.
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