Relative path for compileroptions in .NET

I want to use the compileroptions tag in the web.config to version my DLL files. Is it possible to use a relative path? If not, are t开发者_Go百科here any options for using a relative path? I am using CruiseControl.

 <system.codedom>
        <compilers>
            <compiler language="c#;cs;csharp"
                      extension=".cs"
                      warningLevel="4"
                      compilerOptions="NEED_ARELATIVE_PATH\Properties\AssemblyInfo.cs"
                      type="Microsoft.CSharp.CSharpCodeProvider,System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
                <providerOption name="CompilerVersion"
                                value="v4.0"/>
                <providerOption name="WarnAsError"
                                value="false"/>
            </compiler>
        </compilers>
    </system.codedom>

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If you are talking about a precompiled web application, the source is copied to the obj subdirectory of the precompiled root, so you can use

compilerOptions="obj\Release\Source\Properties\AssemblyInfo.cs"

(You have to include the active configuration (e.g., Release) in the string, but at least it's a relative path.)