Bug#947500: Missing -latomic on mipsel & armel only?

[Julien Puydt <julien.puydt@laposte.net>]

Package: g++-9
Version: 9.2.1-21

I have a package which fails to build on both Debian armel and mipsel
with this g++ package, and with the same error:
/usr/bin/ld: ./.libs/libfplll.so: undefined reference to
`__atomic_store_8'
/usr/bin/ld: ./.libs/libfplll.so: undefined reference to
`__atomic_load_8'

which point to a missing -latomic somewhere. Since all other arches
compiled nicely, I think the package is correct and the compiler makes
something wrong in those cases, but I might err.

Cheers,

JP


PS: here are links to both complete build logs:

https://buildd.debian.org/status/fetch.php?pkg=fplll&arch=armel&ver=5.3.1-1&stamp=1577140525&raw=0

https://buildd.debian.org/status/fetch.php?pkg=fplll&arch=mipsel&ver=5.3.1-1&stamp=1577140414&raw=0