Target portable profile for the API

Author: cconstantin

build.fsx

@@ -50,7 +50,7 @@ let testOutput = "TestResults"
 
 let nugetDir = binDir @@ "nuget"
 let workingDir = binDir @@ "build"
-let libDir40 = workingDir @@ @"lib\net40\"
+let libDirPortable = workingDir @@ @"lib\portable-net45+netcore45\"
 let libDir45 = workingDir @@ @"lib\net45\"
 let nugetExe = FullName @"src\.nuget\NuGet.exe"
 let slnFile = "./src/Reactive.Streams.sln"
@@ -239,7 +239,7 @@ let createNugetPackages _ =
                 nuspec
 
         // Copy dll, pdb and xml to libdir = workingDir/lib/net4x/
-        let libDir = if project.Contains ".TCK" then libDir45 else libDir40
+        let libDir = if project.Contains ".TCK" then libDir45 else libDirPortable
         ensureDirectory libDir
         !! (releaseDir @@ project + ".dll")
         ++ (releaseDir @@ project + ".pdb")

src/api/Reactive.Streams/Reactive.Streams.csproj

@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Reactive.Streams</RootNamespace>
     <AssemblyName>Reactive.Streams</AssemblyName>
-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
@@ -21,6 +21,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -29,6 +30,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />