./configure --without-tls --enable-balancer && make

...

  Entering subdirectory lloadd
make[2]: Entering directory '/home/ryan/tmp/openldap/servers/lloadd'
../../build/mkversion -v "2.X" -s -n Versionstr lloadd > version.c
cc -g -O2 -I../../include -I. -I./../slapd -I../../include       -c -o backend.o backend.c
cc -g -O2 -I../../include -I. -I./../slapd -I../../include       -c -o bind.o bind.c
cc -g -O2 -I../../include -I. -I./../slapd -I../../include       -c -o config.o config.c
cc -g -O2 -I../../include -I. -I./../slapd -I../../include       -c -o connection.o connection.c
cc -g -O2 -I../../include -I. -I./../slapd -I../../include       -c -o client.o client.c
client.c: In function ‘client_tls_handshake_cb’:
client.c:363:10: error: ‘LloadConnection’ has no member named ‘c_is_tls’
  363 |         c->c_is_tls = LLOAD_TLS_ESTABLISHED;
      |          ^~
client.c: In function ‘client_init’:
client.c:418:10: error: ‘LloadConnection’ has no member named ‘c_is_tls’
  418 |         c->c_is_tls = LLOAD_LDAPS;
      |          ^~
make[2]: *** [<builtin>: client.o] Error 1