diff --git a/src/pl/plperl/GNUmakefile b/src/pl/plperl/GNUmakefile
index 1ebf3c9ba2b..51f8890d15d 100644
--- a/src/pl/plperl/GNUmakefile
+++ b/src/pl/plperl/GNUmakefile
@@ -55,6 +55,11 @@ endif # win32
 
 SHLIB_LINK = $(perl_embed_ldflags)
 
+# see https://www.postgresql.org/message-id/flat/8c4fcb72-2574-ff7c-4c25-1f032d4a2a57%40enterprisedb.com
+ifeq ($(PORTNAME), cygwin)
+SHLIB_LINK += -Wl,--export-all-symbols
+endif
+
 REGRESS_OPTS = --dbname=$(PL_TESTDB)
 REGRESS = plperl_setup plperl plperl_lc plperl_trigger plperl_shared \
 	plperl_elog plperl_util plperl_init plperlu plperl_array \