diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9eb3b2d2f62d5e838f5905e1cd666620ab5b8ddb..d4fe8a71faf3f1b278913524111f2d1a4193f849 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -818,6 +818,9 @@ IF(KWSYS_C_SRCS OR KWSYS_CXX_SRCS)
         # for symbol lookup using dladdr
         TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE} ${CMAKE_DL_LIBS})
       ENDIF()
+      IF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
+        TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE} socket)
+      ENDIF()
     ENDIF()
   ENDIF()