[Bug libbacktrace/88161] libbacktrace cannot find executable file on i586-*-freebsd

[kargl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88161

--- Comment #1 from kargl at gcc dot gnu.org ---
The compiler works on x86_64-unknown-freebsd13.0 (aka amd64 freebsd)
and fails on i586-unknown-freebsd13.0 (aka ia32 freebsd).