From 191c71edead666091aaabde6b0941e9134b8a451 Mon Sep 17 00:00:00 2001
From: Peter Debacker <peter-d@users.noreply.github.com>
Date: Thu, 23 Feb 2023 23:27:29 +0100
Subject: [PATCH] Fix cmake on macOS to mark weak symbols with -U linker flag
 (#3978) (#3979)

Co-authored-by: Peter Debacker <pdback@imec.be>
---
 docs/CONTRIBUTORS         | 1 +
 verilator-config.cmake.in | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/docs/CONTRIBUTORS b/docs/CONTRIBUTORS
index 6b83ecfdb..ee8a4c5a0 100644
--- a/docs/CONTRIBUTORS
+++ b/docs/CONTRIBUTORS
@@ -105,6 +105,7 @@ Nathan Myers
 Patrick Stewart
 Paul Wright
 Pawel Sagan
+Peter Debacker
 Peter Horvath
 Peter Monsson
 Philipp Wagner
diff --git a/verilator-config.cmake.in b/verilator-config.cmake.in
index a650cbd64..ae36b961e 100644
--- a/verilator-config.cmake.in
+++ b/verilator-config.cmake.in
@@ -78,6 +78,10 @@ if (NOT CMAKE_CXX_COMPILER_ID MATCHES MSVC)
   endif()
 endif()
 
+if (${CMAKE_CXX_COMPILER_ID} STREQUAL "AppleClang")
+  add_link_options(-Wl,-U,__Z15vl_time_stamp64v,-U,__Z13sc_time_stampv)
+endif()
+
 define_property(TARGET
   PROPERTY VERILATOR_THREADED
   BRIEF_DOCS "Deprecated and has no effect (ignored)"