389-ds-base-1.4.3.1-3.fc32 fails to build with GCC 10 in Fedora 32:

libtool: link: gcc -shared  -fPIC -DPIC  ldap/servers/slapd/.libs/libslapd_la-add.o ldap/servers/slapd/.libs/libslapd_la-agtmmap.o ldap/servers/slapd/.libs/libslapd_la-apibroker.o ldap/servers/slapd/.libs/libslapd_la-attr.o ldap/servers/slapd/.libs/libslapd_la-attrlist.o ldap/servers/slapd/.libs/libslapd_la-attrsyntax.o ldap/servers/slapd/.libs/libslapd_la-auditlog.o ldap/servers/slapd/.libs/libslapd_la-ava.o ldap/servers/slapd/.libs/libslapd_la-backend.o ldap/servers/slapd/.libs/libslapd_la-backend_manager.o ldap/servers/slapd/.libs/libslapd_la-bitset.o ldap/servers/slapd/.libs/libslapd_la-bulk_import.o ldap/servers/slapd/.libs/libslapd_la-charray.o ldap/servers/slapd/.libs/libslapd_la-ch_malloc.o ldap/servers/slapd/.libs/libslapd_la-computed.o ldap/servers/slapd/.libs/libslapd_la-control.o ldap/servers/slapd/.libs/libslapd_la-configdse.o ldap/servers/slapd/.libs/libslapd_la-counters.o ldap/servers/slapd/.libs/libslapd_la-csn.o ldap/servers/slapd/.libs/libslapd_la-csngen.o ldap/servers/slapd/.libs/libslapd_la-csnset.o ldap/servers/slapd/.libs/libslapd_la-defbackend.o ldap/servers/slapd/.libs/libslapd_la-delete.o ldap/servers/slapd/.libs/libslapd_la-dl.o ldap/servers/slapd/.libs/libslapd_la-dn.o ldap/servers/slapd/.libs/libslapd_la-dse.o ldap/servers/slapd/.libs/libslapd_la-dynalib.o ldap/servers/slapd/.libs/libslapd_la-entry.o ldap/servers/slapd/.libs/libslapd_la-entrywsi.o ldap/servers/slapd/.libs/libslapd_la-errormap.o ldap/servers/slapd/.libs/libslapd_la-eventq.o ldap/servers/slapd/.libs/libslapd_la-factory.o ldap/servers/slapd/.libs/libslapd_la-features.o ldap/servers/slapd/.libs/libslapd_la-fileio.o ldap/servers/slapd/.libs/libslapd_la-filter.o ldap/servers/slapd/.libs/libslapd_la-filtercmp.o ldap/servers/slapd/.libs/libslapd_la-filterentry.o ldap/servers/slapd/.libs/libslapd_la-generation.o ldap/servers/slapd/.libs/libslapd_la-getfilelist.o ldap/servers/slapd/.libs/libslapd_la-ldaputil.o ldap/servers/slapd/.libs/libslapd_la-lenstr.o ldap/servers/slapd/.libs/libslapd_la-libglobs.o ldap/servers/slapd/.libs/libslapd_la-localhost.o ldap/servers/slapd/.libs/libslapd_la-log.o ldap/servers/slapd/.libs/libslapd_la-mapping_tree.o ldap/servers/slapd/.libs/libslapd_la-match.o ldap/servers/slapd/.libs/libslapd_la-modify.o ldap/servers/slapd/.libs/libslapd_la-modrdn.o ldap/servers/slapd/.libs/libslapd_la-modutil.o ldap/servers/slapd/.libs/libslapd_la-object.o ldap/servers/slapd/.libs/libslapd_la-objset.o ldap/servers/slapd/.libs/libslapd_la-operation.o ldap/servers/slapd/.libs/libslapd_la-opshared.o ldap/servers/slapd/.libs/libslapd_la-pagedresults.o ldap/servers/slapd/.libs/libslapd_la-pblock.o ldap/servers/slapd/.libs/libslapd_la-plugin.o ldap/servers/slapd/.libs/libslapd_la-plugin_acl.o ldap/servers/slapd/.libs/libslapd_la-plugin_mmr.o ldap/servers/slapd/.libs/libslapd_la-plugin_internal_op.o ldap/servers/slapd/.libs/libslapd_la-plugin_mr.o ldap/servers/slapd/.libs/libslapd_la-plugin_role.o ldap/servers/slapd/.libs/libslapd_la-plugin_syntax.o ldap/servers/slapd/.libs/libslapd_la-protect_db.o ldap/servers/slapd/.libs/libslapd_la-proxyauth.o ldap/servers/slapd/.libs/libslapd_la-pw.o ldap/servers/slapd/.libs/libslapd_la-pw_retry.o ldap/servers/slapd/.libs/libslapd_la-rdn.o ldap/servers/slapd/.libs/libslapd_la-referral.o ldap/servers/slapd/.libs/libslapd_la-regex.o ldap/servers/slapd/.libs/libslapd_la-resourcelimit.o ldap/servers/slapd/.libs/libslapd_la-result.o ldap/servers/slapd/.libs/libslapd_la-sasl_map.o ldap/servers/slapd/.libs/libslapd_la-schema.o ldap/servers/slapd/.libs/libslapd_la-schemaparse.o ldap/servers/slapd/.libs/libslapd_la-security_wrappers.o ldap/servers/slapd/.libs/libslapd_la-slapd_plhash.o ldap/servers/slapd/.libs/libslapd_la-slapi_counter.o ldap/servers/slapd/.libs/libslapd_la-slapi2nspr.o ldap/servers/slapd/.libs/libslapd_la-snmp_collator.o ldap/servers/slapd/.libs/libslapd_la-sort.o ldap/servers/slapd/.libs/libslapd_la-ssl.o ldap/servers/slapd/.libs/libslapd_la-str2filter.o ldap/servers/slapd/.libs/libslapd_la-subentry.o ldap/servers/slapd/.libs/libslapd_la-task.o ldap/servers/slapd/.libs/libslapd_la-time.o ldap/servers/slapd/.libs/libslapd_la-thread_data.o ldap/servers/slapd/.libs/libslapd_la-uniqueid.o ldap/servers/slapd/.libs/libslapd_la-uniqueidgen.o ldap/servers/slapd/.libs/libslapd_la-utf8.o ldap/servers/slapd/.libs/libslapd_la-utf8compare.o ldap/servers/slapd/.libs/libslapd_la-util.o ldap/servers/slapd/.libs/libslapd_la-uuid.o ldap/servers/slapd/.libs/libslapd_la-value.o ldap/servers/slapd/.libs/libslapd_la-valueset.o ldap/servers/slapd/.libs/libslapd_la-vattr.o ldap/servers/slapd/.libs/libslapd_la-slapi_pal.o ldap/libraries/libavl/.libs/libslapd_la-avl.o   -Wl,-rpath -Wl,/builddir/build/BUILD/389-ds-base-1.4.3.1/.libs -Wl,-rpath -Wl,/usr/lib64/dirsrv -lldap_r -llber -lsasl2 -lkrb5 -lk5crypto -lcom_err -lpcre -lsystemd ./.libs/libsds.so ./.libs/libsvrcore.so -lcrack -lssl3 -lsmime3 -lnss3 -lnssutil3 -lplds4 -lplc4 -lnspr4 -lpthread -ldl -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -g -O2 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -O2 -g -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,-z -Wl,relro -Wl,--as-needed -Wl,-z -Wl,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld   -Wl,-soname -Wl,libslapd.so.0 -o .libs/libslapd.so.0.1.0
/usr/bin/ld: ldap/servers/slapd/.libs/libslapd_la-apibroker.o: in function `$d':
/builddir/build/BUILD/389-ds-base-1.4.3.1/ldap/servers/slapd/slap.h:1758: multiple definition of `slapi_task'; ldap/servers/slapd/.libs/libslapd_la-add.o:/builddir/build/BUILD/389-ds-base-1.4.3.1/ldap/servers/slapd/slap.h:1758: first defined here
[...]
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:6261: libslapd.la] Error 1
make[1]: Leaving directory '/builddir/build/BUILD/389-ds-base-1.4.3.1'

This is triggered by upgrading GCC to 10 version.