tm.gmtoff is a BSD extension we don't have.

--- pgpool-II-4.3.0/src/main/pgpool_logger.c.orig	2021-12-07 03:47:33.000000000 +0000
+++ pgpool-II-4.3.0/src/main/pgpool_logger.c	2022-01-09 12:11:45.759995653 +0000
@@ -1116,10 +1116,10 @@
 	rotinterval = pool_config->log_rotation_age * SECS_PER_MINUTE;	/* convert to seconds */
 	now = (pg_time_t) time(NULL);
 	tm = localtime(&now);
-	now += tm->tm_gmtoff;
+//	now += tm->tm_gmtoff;
 	now -= now % rotinterval;
 	now += rotinterval;
-	now -= tm->tm_gmtoff;
+//	now -= tm->tm_gmtoff;
 	next_rotation_time = now;
 }