diff --git a/cmake/FindZLIB.cmake b/cmake/FindZLIB.cmake
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+# CMake - Cross Platform Makefile Generator
+# Copyright 2000-2019 Kitware, Inc. and Contributors
+# All rights reserved.
+
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+FindZLIB
+--------
+
+Find the native ZLIB includes and library.
+
+IMPORTED Targets
+^^^^^^^^^^^^^^^^
+
+This module defines :prop_tgt:`IMPORTED` target ``ZLIB::ZLIB``, if
+ZLIB has been found.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module defines the following variables:
+
+::
+
+  ZLIB_INCLUDE_DIRS   - where to find zlib.h, etc.
+  ZLIB_LIBRARIES      - List of libraries when using zlib.
+  ZLIB_FOUND          - True if zlib found.
+
+::
+
+  ZLIB_VERSION_STRING - The version of zlib found (x.y.z)
+  ZLIB_VERSION_MAJOR  - The major version of zlib
+  ZLIB_VERSION_MINOR  - The minor version of zlib
+  ZLIB_VERSION_PATCH  - The patch version of zlib
+  ZLIB_VERSION_TWEAK  - The tweak version of zlib
+
+Backward Compatibility
+^^^^^^^^^^^^^^^^^^^^^^
+
+The following variable are provided for backward compatibility
+
+::
+
+  ZLIB_MAJOR_VERSION  - The major version of zlib
+  ZLIB_MINOR_VERSION  - The minor version of zlib
+  ZLIB_PATCH_VERSION  - The patch version of zlib
+
+Hints
+^^^^^
+
+A user may set ``ZLIB_ROOT`` to a zlib installation root to tell this
+module where to look.
+
+A user may also set ``ZLIB_STATIC`` to force static linking.
+#]=======================================================================]
+
+# _ZLIB_SEARCHES contains each search for ZLIB
+set(_ZLIB_SEARCHES)
+
+# Search ZLIB_ROOT first if it is set.
+if(ZLIB_ROOT)
+  set(_ZLIB_SEARCH_ROOT PATHS ${ZLIB_ROOT} NO_DEFAULT_PATH)
+  list(APPEND _ZLIB_SEARCHES _ZLIB_SEARCH_ROOT)
+endif()
+
+# Normal search.
+set(_ZLIB_x86 "(x86)")
+set(_ZLIB_SEARCH_NORMAL
+    PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]"
+          "$ENV{ProgramFiles}/zlib"
+          "$ENV{ProgramFiles${_ZLIB_x86}}/zlib")
+unset(_ZLIB_x86)
+list(APPEND _ZLIB_SEARCHES _ZLIB_SEARCH_NORMAL)
+
+set(ZLIB_NAMES z zlib zdll zlib1)
+set(ZLIB_NAMES_STATIC zlibstatic)
+set(ZLIB_NAMES_DEBUG zlibd zlibd1)
+set(ZLIB_NAMES_STATIC_DEBUG zlibstaticd)
+
+# Try each search configuration.
+foreach(search ${_ZLIB_SEARCHES})
+  find_path(ZLIB_INCLUDE_DIR NAMES zlib.h ${${search}} PATH_SUFFIXES include)
+endforeach()
+
+# Allow ZLIB_LIBRARY to be set manually, as the location of the zlib library
+if(NOT ZLIB_LIBRARY)
+  foreach(search ${_ZLIB_SEARCHES})
+	if(NOT ZLIB_STATIC)
+      find_library(ZLIB_LIBRARY_RELEASE NAMES ${ZLIB_NAMES} NAMES_PER_DIR ${${search}} PATH_SUFFIXES lib)
+      find_library(ZLIB_LIBRARY_DEBUG NAMES ${ZLIB_NAMES_DEBUG} NAMES_PER_DIR ${${search}} PATH_SUFFIXES lib)
+	else()
+      find_library(ZLIB_LIBRARY_RELEASE NAMES ${ZLIB_NAMES_STATIC} NAMES_PER_DIR ${${search}} PATH_SUFFIXES lib)
+      find_library(ZLIB_LIBRARY_DEBUG NAMES ${ZLIB_NAMES_STATIC_DEBUG} NAMES_PER_DIR ${${search}} PATH_SUFFIXES lib)
+	endif()
+  endforeach()
+
+  include(SelectLibraryConfigurations)
+  select_library_configurations(ZLIB)
+endif()
+
+unset(ZLIB_NAMES)
+unset(ZLIB_NAMES_DEBUG)
+
+mark_as_advanced(ZLIB_INCLUDE_DIR)
+
+if(ZLIB_INCLUDE_DIR AND EXISTS "${ZLIB_INCLUDE_DIR}/zlib.h")
+    file(STRINGS "${ZLIB_INCLUDE_DIR}/zlib.h" ZLIB_H REGEX "^#define ZLIB_VERSION \"[^\"]*\"$")
+
+    string(REGEX REPLACE "^.*ZLIB_VERSION \"([0-9]+).*$" "\\1" ZLIB_VERSION_MAJOR "${ZLIB_H}")
+    string(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_MINOR  "${ZLIB_H}")
+    string(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_PATCH "${ZLIB_H}")
+    set(ZLIB_VERSION_STRING "${ZLIB_VERSION_MAJOR}.${ZLIB_VERSION_MINOR}.${ZLIB_VERSION_PATCH}")
+
+    # only append a TWEAK version if it exists:
+    set(ZLIB_VERSION_TWEAK "")
+    if( "${ZLIB_H}" MATCHES "ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+)")
+        set(ZLIB_VERSION_TWEAK "${CMAKE_MATCH_1}")
+        string(APPEND ZLIB_VERSION_STRING ".${ZLIB_VERSION_TWEAK}")
+    endif()
+
+    set(ZLIB_MAJOR_VERSION "${ZLIB_VERSION_MAJOR}")
+    set(ZLIB_MINOR_VERSION "${ZLIB_VERSION_MINOR}")
+    set(ZLIB_PATCH_VERSION "${ZLIB_VERSION_PATCH}")
+endif()
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(ZLIB REQUIRED_VARS ZLIB_LIBRARY ZLIB_INCLUDE_DIR
+                                       VERSION_VAR ZLIB_VERSION_STRING)
+
+if(ZLIB_FOUND)
+    set(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
+
+    if(NOT ZLIB_LIBRARIES)
+      set(ZLIB_LIBRARIES ${ZLIB_LIBRARY})
+    endif()
+
+    if(NOT TARGET ZLIB::ZLIB)
+      add_library(ZLIB::ZLIB UNKNOWN IMPORTED)
+      set_target_properties(ZLIB::ZLIB PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${ZLIB_INCLUDE_DIRS}")
+
+      if(ZLIB_LIBRARY_RELEASE)
+        set_property(TARGET ZLIB::ZLIB APPEND PROPERTY
+          IMPORTED_CONFIGURATIONS RELEASE)
+        set_target_properties(ZLIB::ZLIB PROPERTIES
+          IMPORTED_LOCATION_RELEASE "${ZLIB_LIBRARY_RELEASE}")
+      endif()
+
+      if(ZLIB_LIBRARY_DEBUG)
+        set_property(TARGET ZLIB::ZLIB APPEND PROPERTY
+          IMPORTED_CONFIGURATIONS DEBUG)
+        set_target_properties(ZLIB::ZLIB PROPERTIES
+          IMPORTED_LOCATION_DEBUG "${ZLIB_LIBRARY_DEBUG}")
+      endif()
+
+      if(NOT ZLIB_LIBRARY_RELEASE AND NOT ZLIB_LIBRARY_DEBUG)
+        set_property(TARGET ZLIB::ZLIB APPEND PROPERTY
+          IMPORTED_LOCATION "${ZLIB_LIBRARY}")
+      endif()
+    endif()
+endif()
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