From aadd5ea509b2f0ccceaba5885b50bf8ee6990a90 Mon Sep 17 00:00:00 2001
From: Tim Hutt <tdhutt@gmail.com>
Date: Fri, 21 Jun 2024 15:34:11 +0100
Subject: [PATCH] Fix linking with pthreads on CMake (#5194)

---
 .gitignore         | 3 +++
 CMakeLists.txt     | 1 +
 src/CMakeLists.txt | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/.gitignore b/.gitignore
index 96c6afa08..f3325984e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,3 +46,6 @@ verilator-config-version.cmake
 /test_regress/snapshot/
 xmverilog.*
 xrun.history
+
+# Normal CMake build directory
+/build
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 97340f1d8..044d619be 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,7 @@ include(GNUInstallDirs)
 include(CMakePackageConfigHelpers)
 include(CheckStructHasMember)
 include(ExternalProject)
+include(FindThreads)
 
 if (NOT WIN32)
     message(WARNING "CMake support on Linux/OSX is experimental.")
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 73ddab563..608cd2462 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -488,6 +488,8 @@ add_dependencies(${verilator}
     V3PreLex_yy_cpp${CMAKE_BUILD_TYPE}
 )
 
+target_link_libraries(${verilator} PRIVATE Threads::Threads)
+
 # verilated_cov_key.h is only regenerated in a single-configuration environment.
 # This limitation can be lifted when `add_dependencies` will support generator
 # expressions. See https://gitlab.kitware.com/cmake/cmake/issues/19467