diff --git a/src/Makefile.global.in b/src/Makefile.global.in
index a2e2fe7578d..fa9cbc456a1 100644
--- a/src/Makefile.global.in
+++ b/src/Makefile.global.in
@@ -574,13 +574,19 @@ endif
 libpq = -L$(libpq_builddir) -lpq
 
 # This macro is for use by client executables (not libraries) that use libpq.
-# We force clients to pull symbols from the non-shared libraries libpgport
+# We want clients to pull symbols from the non-shared libraries libpgport
 # and libpgcommon rather than pulling some libpgport symbols from libpq just
 # because libpq uses those functions too.  This makes applications less
 # dependent on changes in libpq's usage of pgport.  To do this we link to
 # pgport before libpq.  This does cause duplicate -lpgport's to appear
-# on client link lines.
-ifdef PGXS
+# on client link lines, since that also appears in $(LIBS).  On platforms
+# where we have symbol export control for libpq, the whole exercise is
+# unnecessary because libpq won't expose any of these symbols.  Currently,
+# only macOS warns about duplicate library references, so we only suppress
+# the duplicates on macOS.
+ifeq ($(PORTNAME),darwin)
+libpq_pgport = $(libpq)
+else ifdef PGXS
 libpq_pgport = -L$(libdir) -lpgcommon -lpgport $(libpq)
 else
 libpq_pgport = -L$(top_builddir)/src/common -lpgcommon -L$(top_builddir)/src/port -lpgport $(libpq)