From a1c33af488c444c850aaf63c4992fbe5c82744ec Mon Sep 17 00:00:00 2001
From: Ken Arroyo Ohori <k.ohori@tudelft.nl>
Date: Thu, 3 Sep 2020 21:40:22 -0500
Subject: [PATCH] skip linker groups on Mac

---
 cmake/CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index 88e8d317f8..acaa829306 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -352,7 +352,9 @@ endif()
 if(OCCT_STATIC)
     find_package(Threads)
     # OPENCASCADE_LIBRARIES repeated three times below in order to fix cyclic dependencies - use --start-group ... --end-group instead?
-    set(OPENCASCADE_LIBRARIES -Wl,--start-group ${OPENCASCADE_LIBRARIES} -Wl,--end-group ${CMAKE_THREAD_LIBS_INIT})
+    if(NOT APPLE)
+        set(OPENCASCADE_LIBRARIES -Wl,--start-group ${OPENCASCADE_LIBRARIES} -Wl,--end-group ${CMAKE_THREAD_LIBS_INIT})
+    endif()
     if (NOT APPLE AND NOT WIN32)
         set(OPENCASCADE_LIBRARIES ${OPENCASCADE_LIBRARIES} "rt")
     endif()