diff -rupN zlib-1.2.6/CMakeLists.txt zlib-1.2.6.cotire/CMakeLists.txt
--- zlib-1.2.6/CMakeLists.txt	2012-01-17 03:51:23.000000000 +0100
+++ zlib-1.2.6.cotire/CMakeLists.txt	2012-03-24 21:08:41.000000000 +0100
@@ -7,6 +7,8 @@ if(NOT DEFINED BUILD_SHARED_LIBS)
     option(BUILD_SHARED_LIBS "Build a shared library form of zlib" ON)
 endif()
 
+include("${CMAKE_SOURCE_DIR}/cotire.cmake") 
+
 include(CheckTypeSize)
 include(CheckFunctionExists)
 include(CheckIncludeFile)
@@ -176,6 +178,10 @@ if(NOT SKIP_INSTALL_FILES AND NOT SKIP_I
     install(FILES zlib.3 DESTINATION share/man/man3)
 endif()
 
+if (COMMAND cotire)
+	cotire(zlib)
+endif()
+
 #============================================================================
 # Example binaries
 #============================================================================