swift package manager for library that uses libxml

问题

I'm adding support for the Swift Package Manager to an Obj-C library that depends on libxml.

I notice the Package.swift file requires me to specify a package's URL, but what if the package is already on the system?

Here's my Package.swift file:

import PackageDescription

let package = Package(
    name: "PocketSVG",
)

If I run $ swift build I get:

fatal error: 'libxml/xmlreader.h' file not found

回答1:

In order to use a system library, you need to provide a system module package. For more information see also Require System Libraries in the SwiftPM documentation.

As an example system module package for libxml is this one.

来源：https://stackoverflow.com/questions/42206724/swift-package-manager-for-library-that-uses-libxml