From 3053337043bcd58047c5f400dbc751475c5e2399 Mon Sep 17 00:00:00 2001
From: Yossi Gottlieb <yossigo@gmail.com>
Date: Wed, 20 Oct 2021 21:01:30 +0300
Subject: [PATCH] Fix test modules build issue on OS X 11. (#9658)

(cherry picked from commit 8bf4c2e38c6531af8a8b5bbe3ce469d79a920d35)
---
 tests/modules/Makefile | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tests/modules/Makefile b/tests/modules/Makefile
index ae611de86..021110292 100644
--- a/tests/modules/Makefile
+++ b/tests/modules/Makefile
@@ -16,6 +16,13 @@ ifneq ($(uname_S),FreeBSD)
     LIBS = -lc
 endif
 
+# OS X 11.x doesn't have /usr/lib/libSystem.dylib and needs an explicit setting.
+ifeq ($(uname_S),Darwin)
+ifeq ("$(wildcard /usr/lib/libSystem.dylib)","")
+LIBS = -L /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib -lsystem
+endif
+endif
+
 TEST_MODULES = \
     commandfilter.so \
     basics.so \