restore RESTRICT_SYMBOL_EXPORTS(zlib)

that was lost in c54271723c

remove zlib/libxml2 workaround in CONNECT

storage/connect/CMakeLists.txt

@@ -114,7 +114,6 @@ IF(CONNECT_WITH_LIBXML2)
   FIND_PACKAGE(LibXml2)
   IF (LIBXML2_FOUND)
     INCLUDE_DIRECTORIES(${LIBXML2_INCLUDE_DIR})
-    SET(ZLIB_LIBRARY "z") # see ZLIB_INCLUDE_DIR below
     SET(XML_LIBRARY  ${LIBXML2_LIBRARIES})
     SET(CONNECT_SOURCES ${CONNECT_SOURCES} libdoc.cpp libdoc.h)
     add_definitions(-DLIBXML2_SUPPORT)
@@ -333,14 +332,6 @@ IF(NOT TARGET connect)
   RETURN()
 ENDIF()
 
-# Don't link with bundled zlib and systel libxml2 at the same time.
-# System libxml2 uses system zlib, might conflict with the bundled one.
-IF (XML_LIBRARY AND BUILD_BUNDLED_ZLIB)
-  GET_PROPERTY(INCS TARGET connect PROPERTY INCLUDE_DIRECTORIES)
-  LIST(REMOVE_ITEM INCS ${ZLIB_INCLUDE_DIR})
-  SET_PROPERTY(TARGET connect PROPERTY INCLUDE_DIRECTORIES ${INCS})
-ENDIF()
-
 IF(WIN32)
   IF (libmongoc-1.0_FOUND)
 	  SET_TARGET_PROPERTIES(connect PROPERTIES LINK_FLAGS

zlib/CMakeLists.txt

@@ -124,6 +124,8 @@ string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
 
 ADD_CONVENIENCE_LIBRARY(zlib STATIC
   ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
+RESTRICT_SYMBOL_EXPORTS(zlib)
+
 
 if(NOT CYGWIN)
     # This property causes shared libraries on Linux to have the full version
@@ -142,7 +144,4 @@ if(CMAKE_SYSTEM_NAME MATCHES "SunOS")
 elseif(UNIX)
     # On unix-like platforms the library is almost always called libz
    set_target_properties(zlib PROPERTIES OUTPUT_NAME z)
-   if(NOT APPLE)
-     set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"")
-   endif()
 endif()