We now compile against PCL.

SDL2-CS.csproj

@@ -9,7 +9,8 @@
     <OutputType>Library</OutputType>
     <RootNamespace>SDL2</RootNamespace>
     <AssemblyName>SDL2-CS</AssemblyName>
-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkProfile>Profile7</TargetFrameworkProfile>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
     <DebugSymbols>true</DebugSymbols>
@@ -38,7 +39,7 @@
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>bin\Debug</OutputPath>
-    <DefineConstants>DEBUG;</DefineConstants>
+    <DefineConstants>DEBUG</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
@@ -97,5 +98,5 @@
       </Properties>
     </MonoDevelop>
   </ProjectExtensions>
-  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
-</Project>
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\Portable\$(TargetFrameworkVersion)\Microsoft.Portable.CSharp.targets" />
+</Project>