[Bug lto/106499] LTO runs forever in libfabric 1.15.1 linking

[kloczko.tomasz at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106499

--- Comment #1 from Tomasz Kłoczko <kloczko.tomasz at gmail dot com> ---
Last detail.
I'm adding -Os to %build_cflags