title: Multiple configuration build in yocto
body: <p>I have to build u-boot for multiple configurations, 6 different configurations to be precise. I need to create multiple binaries for all 6 configurations.</p>
  
  <p>I have achieved by creating multiple machine for each configuration and I am able to build all the configurations. Each configuration add different patch that's why we need theses may configurations. But issue I am facing is that we need single machine type and how to I build multiple configurations from single machine.</p>
  
  <pre><code>COMPATIBLE_MACHINE_mx6 = "mx6"
  
  COMPATIBLE_MACHINE_imx6-abc = "imx6-abc"
  
  COMPATIBLE_MACHINE_imx6-xyz = "imx6-xyz"
  
  COMPATIBLE_MACHINE_abc-uboot-imx = "abc-uboot-imx"
  
  COMPATIBLE_MACHINE_abc-uboot-imx-secure = "abc-uboot-imx-secure"
  
  COMPATIBLE_MACHINE_abc-uboot-secure = "abc-uboot-secure"
  
  COMPATIBLE_MACHINE_abc-encryption = "abc-encryption"
  
  COMPATIBLE_MACHINE_abc-provisioning = "abc-provisioning"
  
  COMPATIBLE_MACHINE_abc-factory-test = "abc-factory-test"
  
  COMPATIBLE_MACHINE_xyz-factory-test = "xyz-factory-test"
  </code></pre>
  
  <p>Above machines build the separate configurations images but I need to achieve the same with single machine only.</p>
  
  <pre><code>COMPATIBLE_MACHINE_mx6 = "mx6"
  
  COMPATIBLE_MACHINE_imx6-abc = "imx6-abc"
  
  COMPATIBLE_MACHINE_imx6-xyz = "imx6-xyz"
  </code></pre>
  
  <p>With only one machine type, how i should build multiple configuration. Please comment!</p>