diff --git a/CMakeLists.txt b/CMakeLists.txt
index 97ccee6ad..0a3f79f9b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1117,7 +1117,8 @@ elseif(CMAKE_SYSTEM_NAME MATCHES "(SunOS|Solaris)")
   set(EXTRA_LIBRARIES socket nsl resolv)
 elseif(NOT MSVC AND NOT DEPENDS)
   find_library(RT rt)
-  set(EXTRA_LIBRARIES ${RT})
+  find_library(Z z)
+  set(EXTRA_LIBRARIES ${RT} ${Z})
 endif()
 
 list(APPEND EXTRA_LIBRARIES ${CMAKE_DL_LIBS})