{
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  "description": "Serilog provider for Microsoft.Extensions.Logging",
  "authors": [ "Microsoft", "Serilog Contributors" ],
  "packOptions": {
    "tags": [ "serilog", "Microsoft.Extensions.Logging" ],
    "projectUrl": "https://github.com/serilog/serilog-extensions-logging",
    "licenseUrl": "http://www.apache.org/licenses/LICENSE-2.0",
    "iconUrl": "http://serilog.net/images/serilog-extension-nuget.png"
  },
  "dependencies": {
    "Microsoft.Extensions.Logging.Abstractions": "1.0.0",
    "Serilog": "2.3.0"
  },
  "buildOptions": {
    "keyFile": "../../assets/Serilog.snk",
    "xmlDoc": true,
    "warningsAsErrors": true
  },
  "frameworks": {
    "net4.5": {
    },
    "net4.6": {
      "buildOptions": {
        "define": [ "ASYNCLOCAL" ]
      }
    },
    "netstandard1.3": {
      "buildOptions": {
        "define": ["ASYNCLOCAL"]
      }
    }
  }
}

{
  "version": "1.4.0-*",
  "description": "Serilog provider for Microsoft.Extensions.Logging",
  "authors": [ "Microsoft", "Serilog Contributors" ],
  "packOptions": {
    "tags": [ "serilog", "Microsoft.Extensions.Logging" ],
    "projectUrl": "https://github.com/serilog/serilog-extensions-logging",
    "licenseUrl": "http://www.apache.org/licenses/LICENSE-2.0",
    "iconUrl": "http://serilog.net/images/serilog-extension-nuget.png"
  },
  "dependencies": {
    "Microsoft.Extensions.Logging.Abstractions": "1.0.0",
    "Serilog": "2.3.0"
  },
  "buildOptions": {
    "keyFile": "../../assets/Serilog.snk",
    "xmlDoc": true,
    "warningsAsErrors": true
  },
  "frameworks": {
    "net4.5": {
      "frameworkAssemblies": { "System.Runtime": { "type": "build" } }
    },
    "net4.6": {
      "frameworkAssemblies": { "System.Runtime": { "type": "build" } }
      "buildOptions": {
        "define": [ "ASYNCLOCAL" ]
      }
    },
    "netstandard1.3": {
      "buildOptions": {
        "define": ["ASYNCLOCAL"]
      }
    }
  }
}

Add build-time dependency on System.Runtime
Add build-time dependency on System.Runtime