Swift Vapor Postgres Xcode构建错误：无法构建Objective-C模块’CPostgreSQLMac’

import PackageDescription

        let package = Package(
        name: "todo_vapor_swift",
            dependencies: [
                .Package(url: "https://github.com/vapor/vapor.git", majorVersion: 1, minor: 5),
                .Package(url: "https://github.com/vapor/postgresql-provider", majorVersion: 1, minor: 0)
],
exclude: [
    "Config",
    "Database",
    "Localization",
    "Public",
    "Resources",
]

)

运行以下命令：brew install postgres