LS1043ARDB arm_cortex-a53_neon-vfpv4 packages, undefined references on ARM unwind routines missing on arm_cortex-a15_neon-vfpv4

Hi Folks,

Working on porting an old set of c++ application into LS1043ARDB platform.

I am finding arm_cortex-a53_neon-vfpv4 packages/toolchain missing and it appears the default toolchain built with arm_cortex-a15_neon-vfpv4 has a musl variant of g++ which misses the unwind routines for ARM (__aeabi_unwind_cpp_pr0 and __aeabi_unwind_cpp_pr1 functions)?

This sounds similar to below android build scenario, I am going to try patching after finding correct unwind source and rebuild the toolchain.

If there is any known workaround or ARM A53 specific toolchain/package please let me know. It looks like I need to build a squashfs with external toolchain(linaro or freescale specific).