diff --git a/CMakeLists.txt b/CMakeLists.txt
index 04a5b7719..c81fa2af9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -140,8 +140,8 @@ if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lpthread")
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -lpthread")
   else()
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -pthread")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -pthread")
   endif()
 
   if(NOT CMAKE_SYSTEM_NAME MATCHES AIX AND NOT CMAKE_SYSTEM_NAME MATCHES OpenBSD AND NOT CMAKE_SYSTEM_NAME MATCHES SunOS)