在本地SPM包中导入本地SPM库

Question

我有一个包含2个库的本地SPM包，我想在另一个本地SPM包中导入其中一个库：文件，其中包含库：

let package = Package(
    name: "LocationService",
    platforms: [.iOS(.v13)],
    products: [
        .library(
            name: "LocationService",
            type: .dynamic,
            targets: ["LocationService"]),
        .library(
          name: "LocationLiveClient",
          type: .dynamic,
          targets: ["LocationLiveClient"]),
    ],
    targets: [
        .target(
            name: "LocationService",
            dependencies: []),
        .target(
            name: "LocationLiveClient",
            dependencies: ["LocationService"],
            path: "Sources/LocationLiveClient"),
    ]
)

导入库的文件：

let package = Package(
    name: "HomePage",
    products: [
        .library(
            name: "HomePage",
            type: .dynamic,
            targets: ["HomePage"])
    ],
    dependencies: [
      .package(path: "../RouterService"),
      .package(path: "../LocationService/Sources/LocationLiveClient"),
    ],
    targets: [
        .target(
            name: "HomePage",
            dependencies: ["RouterService", "LocationLiveClient"])
    ]
)

Answer 1

这里有几个问题要解决。

(如果您的设计要求是使用“动态”链接，那么这种方法可能不适合您。)

• type: .dynamic

除非您绝对需要保证如何实现库链接，否则建议将其保留为nil的默认值(只需删除行)。这允许快速包管理器确定如何最好地链接库(默认为“静态”)。

• .package(path: "../LocationService/Sources/LocationLiveClient"),

LocationLiveClient是LocationService包的产品和目标。在这里的依赖项中，应该对整个包进行引用。所以把这个改为.package(path: "../LocationService"),

• dependencies: ["RouterService", "LocationLiveClient"])

一旦要依赖于整个位置服务包的更改，编译器需要一些额外的信息。您可以更新目标依赖项以具体使用LocationService包中的LocationService库：.product(name: "LocationLiveClient", package: "LocationService")。

在进行了这些更改之后，您将得到如下的包定义：

let package = Package(
    name: "HomePage",
    products: [
        .library(
            name: "HomePage",
            targets: ["HomePage"]),
    ],
    dependencies: [
        .package(path: "../RouterService"),
        .package(path: "../LocationService"),
    ],
    targets: [
        .target(
            name: "HomePage",
            dependencies: [
                "RouterService",
                .product(name: "LocationLiveClient", package: "LocationService")
            ]
        ),
    ]
)

然后，您应该能够像预期的那样进行import LocationLiveClient。

附带注意:假设您的“LocationService”包具有以下文件夹结构，那么您可以安全地从LocationLiveClient目标定义中删除path: "Sources/LocationLiveClient"。

LocationService
-> Sources
  -> LocationService
  -> LocationLiveClient