[Bug lto/89166] -static prevents liblto_plugin to be created

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89166

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
You could try BOOT_LDFLAGS=-static, not sure if that also applies to the (also
host) lto-plugin.