https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117725
--- Comment #8 from Matthias Klose <doko at gcc dot gnu.org> --- see https://buildd.debian.org/status/logs.php?pkg=gcc-snapshot&arch=s390x clicking on the "Maybe Failed" shows you the build log, search for --enable-languages to look at all configuration options.
