Remove undesired build flag -march=native
I'm hopeful this also fixes some FTBFS:
- ppc64el
c++: error: unrecognized command line option ‘-march=native’; did you mean ‘-mcpu=native’?
; removing march=native should help - armel
/usr/include/c++/9/bits/atomic_futex.h:208: undefined reference to 'std::__atomic_futex_unsigned_base::_M_futex_notify_all(unsigned int*)'
; a comment https://github.com/richfelker/musl-cross-make/issues/79#issuecomment-555805003 suggests -march may be the issue
Ping @tille; could you review and upload? (I'm not sure if the ping is necessary and who gets the notification by default)