diff --git a/build/cmake/init.cmake b/build/cmake/init.cmake
index b5b207924a..462bb50729 100644
--- a/build/cmake/init.cmake
+++ b/build/cmake/init.cmake
@@ -295,4 +295,57 @@ if(wxUSE_GUI)
             wx_option_force_value(wxUSE_LIBSDL OFF)
         endif()
     endif()
+
+    if(wxUSE_NOTIFICATION_MESSAGE AND UNIX AND WXGTK2 AND wxUSE_LIBNOTIFY)
+        find_package(LibNotify)
+        if(NOT LIBNOTIFY_FOUND)
+            message(WARNING "Libnotify not found, it won't be used for notifications")
+            wx_option_force_value(wxUSE_LIBNOTIFY OFF)
+        elseif((LIBNOTIFY_VERSION GREATER 0.7) OR (LIBNOTIFY_VERSION EQUAL 0.7))
+            set(wxUSE_LIBNOTIFY_0_7 ON)
+        endif()
+    endif()
+
+    if(wxUSE_UIACTIONSIMULATOR AND UNIX AND WXGTK)
+        if(wxUSE_XTEST)
+            find_package(XTest)
+            if(XTEST_FOUND)
+                list(APPEND wxTOOLKIT_INCLUDE_DIRS ${XTEST_INCLUDE_DIRS})
+                list(APPEND wxTOOLKIT_LIBRARIES ${XTEST_LIBRARIES})
+            else()
+                if(WXGTK3)
+                    # This class can't work without XTest with GTK+ 3
+                    # which uses XInput2 and so ignores XSendEvent().
+                    message(STATUS "XTest not found, wxUIActionSimulator won't be available")
+                    wx_option_force_value(wxUSE_UIACTIONSIMULATOR OFF)
+                endif()
+                # The other ports can use XSendEvent(), so don't warn
+                wx_option_force_value(wxUSE_XTEST OFF)
+            endif()
+        else(WXGTK3)
+            # As per above, wxUIActionSimulator can't be used in this case,
+            # but there is no need to warn, presumably the user knows what
+            # he's doing if wxUSE_XTEST was explicitly disabled.
+            wx_option_force_value(wxUSE_UIACTIONSIMULATOR OFF)
+        endif()
+    endif()
+
+    if(wxUSE_HTML AND UNIX AND wxUSE_LIBMSPACK)
+        find_package(MSPACK)
+        if(NOT MSPACK_FOUND)
+            message(STATUS "libmspack not found")
+            wx_option_force_value(wxUSE_LIBMSPACK OFF)
+        endif()
+    endif()
+
+    if(WXGTK2 AND wxUSE_MIMETYPE AND wxUSE_LIBGNOMEVFS)
+        find_package(GnomeVFS2)
+        if(GNOMEVFS2_FOUND)
+            list(APPEND wxTOOLKIT_INCLUDE_DIRS ${GNOMEVFS2_INCLUDE_DIRS})
+            list(APPEND wxTOOLKIT_LIBRARIES ${GNOMEVFS2_LIBRARIES})
+        else()
+            message(STATUS "libgnomevfs not found, library won't be used to associate MIME type")
+            wx_option_force_value(wxUSE_LIBGNOMEVFS OFF)
+        endif()
+    endif()
 endif()
diff --git a/build/cmake/lib/core/CMakeLists.txt b/build/cmake/lib/core/CMakeLists.txt
index 54c2810051..439b4c567b 100644
--- a/build/cmake/lib/core/CMakeLists.txt
+++ b/build/cmake/lib/core/CMakeLists.txt
@@ -86,5 +86,9 @@ if(UNIX AND wxUSE_LIBSDL)
         wx_lib_link_libraries(core PUBLIC ${SDL_LIBRARY})
     endif()
 endif()
+if(wxUSE_LIBNOTIFY)
+    wx_lib_include_directories(core PUBLIC ${LIBNOTIFY_INCLUDE_DIRS})
+    wx_lib_link_libraries(core PUBLIC ${LIBNOTIFY_LIBRARIES})
+endif()
 
 wx_finalize_lib(core)
diff --git a/build/cmake/lib/html/CMakeLists.txt b/build/cmake/lib/html/CMakeLists.txt
index b9dbd5a553..d4b8b6d19c 100644
--- a/build/cmake/lib/html/CMakeLists.txt
+++ b/build/cmake/lib/html/CMakeLists.txt
@@ -11,10 +11,15 @@ include(../../source_groups.cmake)
 
 wx_append_sources(HTML_FILES HTML_CMN)
 
-if(WIN32)
+if(WIN32 OR wxUSE_LIBMSPACK)
     wx_append_sources(HTML_FILES HTML_MSW)
 endif()
 
 wx_add_library(html ${HTML_FILES})
 
+if(wxUSE_LIBMSPACK)
+    wx_lib_include_directories(html PRIVATE ${MSPACK_INCLUDE_DIRS})
+    wx_lib_link_libraries(html PRIVATE ${MSPACK_LIBRARIES})
+endif()
+
 wx_finalize_lib(html)
diff --git a/build/cmake/modules/FindGnomeVFS2.cmake b/build/cmake/modules/FindGnomeVFS2.cmake
new file mode 100644
index 0000000000..d942addac3
--- /dev/null
+++ b/build/cmake/modules/FindGnomeVFS2.cmake
@@ -0,0 +1,90 @@
+# - Try to find GnomeVFS2
+# Once done this will define
+#
+#  GNOMEVFS2_FOUND - system has GnomeVFS2
+#  GNOMEVFS2_INCLUDE_DIRS - the GnomeVFS2 include directory
+#  GNOMEVFS2_LIBRARIES - Link these to use GnomeVFS2
+#  GNOMEVFS2_DEFINITIONS - Compiler switches required for using GnomeVFS2
+#
+#  Copyright (c) 2008 Joshua L. Blocher <verbalshadow@gmail.com>
+#
+#  Redistribution and use is allowed according to the terms of the New
+#  BSD license.
+#  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+
+
+if (GNOMEVFS2_LIBRARIES AND GNOMEVFS2_INCLUDE_DIRS)
+  # in cache already
+  set(GNOMEVFS2_FOUND TRUE)
+else (GNOMEVFS2_LIBRARIES AND GNOMEVFS2_INCLUDE_DIRS)
+  # use pkg-config to get the directories and then use these values
+  # in the FIND_PATH() and FIND_LIBRARY() calls
+  if (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
+    include(UsePkgConfig)
+    pkgconfig(gnome-vfs-2.0 _GNOMEVFS2_INCLUDEDIR _GNOMEVFS2_LIBDIR _GNOMEVFS2_LDFLAGS _GNOMEVFS2_CFLAGS)
+  else (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
+    find_package(PkgConfig)
+    if (PKG_CONFIG_FOUND)
+      pkg_check_modules(_GNOMEVFS2 gnome-vfs-2.0)
+    endif (PKG_CONFIG_FOUND)
+  endif (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
+  find_path(GNOMEVFS2_INCLUDE_DIR
+    NAMES
+      libgnomevfs/gnome-vfs.h
+    PATHS
+      ${_GNOMEVFS2_INCLUDEDIR}
+      /usr/include
+      /usr/local/include
+      /opt/local/include
+      /sw/include
+      $ENV{DEVLIBS_PATH}//include//
+    PATH_SUFFIXES
+      gnome-vfs-2.0
+  )
+
+  find_library(GNOMEVFS-2_LIBRARY
+    NAMES
+      gnomevfs-2
+    PATHS
+      ${_GNOMEVFS2_LIBDIR}
+      /usr/lib
+      /usr/local/lib
+      /opt/local/lib
+      /sw/lib
+  )
+
+  if (GNOMEVFS-2_LIBRARY)
+    set(GNOMEVFS-2_FOUND TRUE)
+  endif (GNOMEVFS-2_LIBRARY)
+
+  set(GNOMEVFS2_INCLUDE_DIRS
+    ${GNOMEVFS2_INCLUDE_DIR}
+  )
+
+  if (GNOMEVFS-2_FOUND)
+    set(GNOMEVFS2_LIBRARIES
+      ${GNOMEVFS2_LIBRARIES}
+      ${GNOMEVFS-2_LIBRARY}
+    )
+  endif (GNOMEVFS-2_FOUND)
+
+  if (GNOMEVFS2_INCLUDE_DIRS AND GNOMEVFS2_LIBRARIES)
+     set(GNOMEVFS2_FOUND TRUE)
+  endif (GNOMEVFS2_INCLUDE_DIRS AND GNOMEVFS2_LIBRARIES)
+
+  if (GNOMEVFS2_FOUND)
+    if (NOT GnomeVFS2_FIND_QUIETLY)
+      message(STATUS "Found GnomeVFS2: ${GNOMEVFS2_LIBRARIES}")
+    endif (NOT GnomeVFS2_FIND_QUIETLY)
+  else (GNOMEVFS2_FOUND)
+    if (GnomeVFS2_FIND_REQUIRED)
+      message(FATAL_ERROR "Could not find GnomeVFS2")
+    endif (GnomeVFS2_FIND_REQUIRED)
+  endif (GNOMEVFS2_FOUND)
+
+  # show the GNOMEVFS2_INCLUDE_DIRS and GNOMEVFS2_LIBRARIES variables only in the advanced view
+  mark_as_advanced(GNOMEVFS2_INCLUDE_DIRS GNOMEVFS2_LIBRARIES)
+
+endif (GNOMEVFS2_LIBRARIES AND GNOMEVFS2_INCLUDE_DIRS)
+
diff --git a/build/cmake/modules/FindLibNotify.cmake b/build/cmake/modules/FindLibNotify.cmake
new file mode 100644
index 0000000000..e76b199ba7
--- /dev/null
+++ b/build/cmake/modules/FindLibNotify.cmake
@@ -0,0 +1,55 @@
+# - Try to find LibNotify
+# This module defines the following variables:
+#
+#  LIBNOTIFY_FOUND - LibNotify was found
+#  LIBNOTIFY_INCLUDE_DIRS - the LibNotify include directories
+#  LIBNOTIFY_LIBRARIES - link these to use LibNotify
+#
+# Copyright (C) 2012 Raphael Kubo da Costa <rakuco@webkit.org>
+# Copyright (C) 2014 Collabora Ltd.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1.  Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+# 2.  Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``AS
+# IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR ITS
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+find_package(PkgConfig)
+pkg_check_modules(LIBNOTIFY QUIET libnotify)
+
+find_path(LIBNOTIFY_INCLUDE_DIRS
+    NAMES notify.h
+    HINTS ${LIBNOTIFY_INCLUDEDIR}
+          ${LIBNOTIFY_INCLUDE_DIRS}
+    PATH_SUFFIXES libnotify
+)
+
+find_library(LIBNOTIFY_LIBRARIES
+    NAMES notify
+    HINTS ${LIBNOTIFY_LIBDIR}
+          ${LIBNOTIFY_LIBRARY_DIRS}
+)
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibNotify REQUIRED_VARS LIBNOTIFY_INCLUDE_DIRS LIBNOTIFY_LIBRARIES
+                                            VERSION_VAR   LIBNOTIFY_VERSION)
+
+mark_as_advanced(
+    LIBNOTIFY_INCLUDE_DIRS
+    LIBNOTIFY_LIBRARIES
+)
diff --git a/build/cmake/modules/FindMSPACK.cmake b/build/cmake/modules/FindMSPACK.cmake
new file mode 100644
index 0000000000..c82e8caa60
--- /dev/null
+++ b/build/cmake/modules/FindMSPACK.cmake
@@ -0,0 +1,40 @@
+## FindMSPACK.cmake
+##
+## Copyright (C) 2016 Christian Schenk
+## 
+## This file is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published
+## by the Free Software Foundation; either version 2, or (at your
+## option) any later version.
+## 
+## This file is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+## 
+## You should have received a copy of the GNU General Public License
+## along with this file; if not, write to the Free Software
+## Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+## USA.
+
+find_path(MSPACK_INCLUDE_DIR
+  NAMES
+    mspack.h
+)
+
+find_library(MSPACK_LIBRARY
+  NAMES
+    mspack
+)
+
+find_package_handle_standard_args(MSPACK DEFAULT_MSG MSPACK_LIBRARY MSPACK_INCLUDE_DIR)
+
+if(MSPACK_FOUND)
+  set(MSPACK_INCLUDE_DIRS ${MSPACK_INCLUDE_DIR})
+  set(MSPACK_LIBRARIES ${MSPACK_LIBRARY})
+else()
+  set(MSPACK_INCLUDE_DIRS)
+  set(MSPACK_LIBRARIES)
+endif()
+
+mark_as_advanced(MSPACK_LIBRARY MSPACK_INCLUDE_DIR)
diff --git a/build/cmake/modules/FindXTest.cmake b/build/cmake/modules/FindXTest.cmake
new file mode 100644
index 0000000000..8fb21f682e
--- /dev/null
+++ b/build/cmake/modules/FindXTest.cmake
@@ -0,0 +1,51 @@
+# - Find XTEST
+# Find the XTEST libraries
+#
+#  This module defines the following variables:
+#     XTEST_FOUND        - true if XTEST_INCLUDE_DIR & XTEST_LIBRARY are found
+#     XTEST_LIBRARIES    - Set when XTEST_LIBRARY is found
+#     XTEST_INCLUDE_DIRS - Set when XTEST_INCLUDE_DIR is found
+#
+#     XTEST_INCLUDE_DIR  - where to find XTest.h, etc.
+#     XTEST_LIBRARY      - the XTEST library
+#
+
+#=============================================================================
+# Copyright 2011 O.S. Systems Software Ltda.
+# Copyright 2011 Otavio Salvador <otavio@ossystems.com.br>
+# Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#=============================================================================
+
+find_path(XTEST_INCLUDE_DIR NAMES X11/extensions/XTest.h
+          PATH_SUFFIXES X11/extensions
+          PATHS /opt/X11/include
+          DOC "The XTest include directory"
+)
+
+find_library(XTEST_LIBRARY NAMES Xtst
+          PATHS /opt/X11/lib
+          DOC "The XTest library"
+)
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(XTest DEFAULT_MSG XTEST_LIBRARY XTEST_INCLUDE_DIR)
+
+if(XTEST_FOUND)
+  set( XTEST_LIBRARIES ${XTEST_LIBRARY} )
+  set( XTEST_INCLUDE_DIRS ${XTEST_INCLUDE_DIR} )
+endif()
+
+mark_as_advanced(XTEST_INCLUDE_DIR XTEST_LIBRARY)
+
diff --git a/build/cmake/options.cmake b/build/cmake/options.cmake
index 1ea8458bda..df57e1023b 100644
--- a/build/cmake/options.cmake
+++ b/build/cmake/options.cmake
@@ -76,8 +76,12 @@ set(wxTHIRD_PARTY_LIBRARIES ${wxTHIRD_PARTY_LIBRARIES} wxUSE_LIBLZMA "use liblzm
 wx_option(wxUSE_OPENGL "use OpenGL (or Mesa)")
 wx_option(wxUSE_LIBSDL "use SDL for audio on Unix")
 
-if(NOT WIN32)
+if(UNIX)
     wx_option(wxUSE_LIBICONV "use libiconv (character conversion)")
+    wx_option(wxUSE_LIBNOTIFY "use libnotify for notifications")
+    wx_option(wxUSE_XTEST "use XTest extension")
+    wx_option(wxUSE_LIBMSPACK "use libmspack (CHM help files loading)")
+    wx_option(wxUSE_LIBGNOMEVFS "use GNOME VFS for associating MIME types")
 endif()
 
 # ---------------------------------------------------------------------------