compiling glibc using -fasynchronous-unwind-tables for arm

[Abhijit Ray Chaudhury]

Hi ,

I am trying to compile glibc-2.25 with -fasynchronous-unwind-tables flag
for correctly generating backtrace . But during configure, it conflicts
with -fno-unwind-tables passed by sysdeps/arm/preconfigure and generates
link error during conftest.

My gcc does not enable -fasynchronous-unwind-tables by default. How do I
compile entire libc using unwind-tables ?

Thanks in Advance,
-Abhijit