how to for Compact framework project build Speed improvement

c:\Windows\Microsoft.NET\Framework\v3.5\Microsoft.CompactFramework.Common.targets

    <Target
        Name="PlatformVerificationTask" Condition="'$(SkipPlatform Verification)' == 'true'">
        <PlatformVerificationTask
            PlatformFamilyName="$(PlatformFamilyName)"
            PlatformID="$(PlatformID)"
            SourceAssembly="@(IntermediateAssembly)"
            ReferencePath="@(ReferencePath)"
            TreatWarningsAsErrors="$(TreatWarningsAsErrors)"
            PlatformVersion="$(TargetFrameworkVersion)"/>
    </Target>