It is customized locally, such as use 64 bit nativesdk-gcc to build 32bit application
 
I have sent the patches months ago [1], but it is not suitable for Yocto, because the implement is complicated and the scope of use is small
So we support it locally, but we need Yocto SDK to support the ability of multilib extension
 
Commit  [2]  is the similar patch to support the ability of multilib extension
 
[1] https://lists.openembedded.org/g/openembedded-core/topic/110767332#msg210201
[2] https://git.openembedded.org/openembedded-core/commit/?id=703187755244b1a45dd9f90aeaf620d4c92a6757
 
//Hongxu