Could Android source code build on ARM64 boards?

I am wonder is that possible to build android source code on ARM64 boards?

Currently, it seems the android build system doesn't support arm64 arch as a host. If we want to support this native build, then what are the work should be do? Do you have ever try this? This is import that if we want to deploy ARM64 boards in the build cloud center. Usually, the build cloud should support Android build.