remove rt lib if mac os

Author: neatlife

cmake/FindRdKafka.cmake

@@ -55,7 +55,11 @@ try_compile(RdKafka_FOUND ${CMAKE_CURRENT_BINARY_DIR}
 
 if (RdKafka_FOUND)
     add_library(RdKafka::rdkafka ${RDKAFKA_LIBRARY_TYPE} IMPORTED GLOBAL)
-    set(RDKAFKA_DEPENDENCIES pthread rt ssl crypto dl z)
+    if (UNIX AND NOT APPLE)
+        set(RDKAFKA_DEPENDENCIES pthread rt ssl crypto dl z)
+    else()
+        set(RDKAFKA_DEPENDENCIES pthread ssl crypto dl z)
+    endif()
     set_target_properties(RdKafka::rdkafka PROPERTIES
             IMPORTED_NAME RdKafka
             IMPORTED_LOCATION "${RdKafka_LIBRARY_PATH}"