[swift-users] Importing C system libraries

[Kelvin Ma]

How do I compile a project with many modules? My tree looks like this:


​

On Tue, Mar 28, 2017 at 12:47 PM, Michael Ilseman <milseman at apple.com>
wrote:

> Sure! In this example, I have built libgit2. I have a directory called
> Git, and inside that I have the following module map:
>
> module Git [system] {
>        header "<my path>/libgit2/include/git2.h"
>        export *
> }
>
> When I run, I use:
>
> swift -I <path-to-“Git”-directory> -L <path-to-built-libgit2> -lgit2
> foo.swift
>
> inside foo.swift I can:
>
> import Git
> // … use libGit2
>
>
> Read more about how to write a more appropriate module.map file for your
> purposes at https://clang.llvm.org/docs/Modules.html. For example, you
> might be able to define link flags inside the module.map, use umbrella
> directories, submodules, etc.
>
>
>
> On Mar 28, 2017, at 6:27 AM, Kelvin Ma <kelvinsthirteen at gmail.com> wrote:
>
> Can you give an example?
>
> On Mon, Mar 27, 2017 at 3:59 PM, Michael Ilseman <milseman at apple.com>
> wrote:
>
>> Sure. At a low level, you can create a module.map file and use -L/-l
>> flags in your invocation of Swift. If you want to do so at a higher level,
>> then perhaps SwiftPM can. CCing swift-build-dev for the SwiftPM part.
>>
>>
>> > On Mar 26, 2017, at 3:20 PM, Kelvin Ma via swift-users <
>> swift-users at swift.org> wrote:
>> >
>> > Idk if this has been asked before, but is there a way to import C
>> libraries into a Swift project without creating a local git repo?
>> Preferably something similar to C where you can just `#include` headers and
>> then specify the link flags (in Package.swift?)
>> >
>> > It’s getting very cumbersome to make a bunch of empty git repos just to
>> use libglfw or libcairo.
>> > _______________________________________________
>> > swift-users mailing list
>> > swift-users at swift.org
>> > https://lists.swift.org/mailman/listinfo/swift-users
>>
>>
>
>
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