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<concept id="GUID-7FF363B0-B05F-5490-8D9C-59061B905381" xml:lang="en"><title>How
to build ROMs with variants</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>A variant will define hundreds of features. Use <codeph>BUILDROM</codeph>,
to build a ROM for a variant. BUILDROM is the unified Symbian platform ROM
building tool. </p>
<section id="GUID-EF11232F-498C-403B-A9BF-2EFBAF8619C5"><title>ROM building
specifications </title><p>A variant configuration will be defined in <filepath>.var</filepath> file.
Specify the VAR file name along with the <codeph>FEATUREVARIANT</codeph> keyword. </p><p>For
example, if <filepath>myvar.var</filepath> is the VAR file name for variant <codeph>myvar</codeph>,
then use: </p><codeblock id="GUID-7AA78362-82AD-5F0A-96B9-030B724A6554" xml:space="preserve">buildrom [options] –DFEATUREVARIANT=myvar &lt;obey1&gt; [&lt;obey2&gt; ...]</codeblock><p><b>Note</b>: For more information on BUILDROM, refer to <xref href="http://developer.symbian.org/wiki/index.php/BUILDROM_reference" scope="external">BUILDROM reference</xref>.</p></section>
</conbody></concept>