libubsan with dynamic TLS

[Philipp Ochsendorf <ochsendorf@xxxxxxxxxxxxxx>]

Hi,

I've compiled gcc 5.1.0 with default settings. Doing so built
libubsan.so with STATIC_TLS. Is there some way to build this single lib
with global-dynamic TLS?

I'm aware of the configure option --with-build-config=NAME... but the
examples provided don't change target specific options. Is there a way
to do this for libubsan?

Thanks for your help,
Philipp