Fails here:
https://build.opensuse.org/build/openSUSE:Factory:Staging:N/standard/x86_64/xtrabackup/_log

due to:

[  313s]
/home/abuild/rpmbuild/BUILD/percona-xtrabackup-2.4.12/build/libmysql/libmysql_exports_file.cc:106:15:
error: function 'mysql_load_plugin' redeclared as variable
[  313s]   106 |  extern void* mysql_load_plugin;
[  313s]       |               ^
[  313s]
/home/abuild/rpmbuild/BUILD/percona-xtrabackup-2.4.12/sql-common/client_plugin.c:541:1:
note: previously declared here
[  313s]   541 | mysql_load_plugin(MYSQL *mysql, const char *name, int type,
int argc, ...)
[  313s]       | ^
[  313s]
/home/abuild/rpmbuild/BUILD/percona-xtrabackup-2.4.12/build/libmysql/libmysql_exports_file.cc:105:15:
error: function 'mysql_client_register_plugin' redeclared as variable
[  313s]   105 |  extern void* mysql_client_register_plugin;
[  313s]       |               ^
[  313s]
/home/abuild/rpmbuild/BUILD/percona-xtrabackup-2.4.12/sql-common/client_plugin.c:395:1:
note: previously declared here
[  313s]   395 | mysql_client_register_plugin(MYSQL *mysql,
[  313s]       | ^
[  313s]
/home/abuild/rpmbuild/BUILD/percona-xtrabackup-2.4.12/build/libmysql/libmysql_exports_file.cc:104:15:
error: function 'mysql_client_find_plugin' redeclared as variable
[  313s]   104 |  extern void* mysql_client_find_plugin;
[  313s]       |               ^
[  313s]
/home/abuild/rpmbuild/BUILD/percona-xtrabackup-2.4.12/sql-common/client_plugin.c:553:1:
note: previously declared here