diff --git a/CMakeLists.txt b/CMakeLists.txt
index 21d2c05d423..4f6ca614ba0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,8 @@
 #
 # OpenSceneGraph CMake build file
 #
+CMAKE_MINIMUM_REQUIRED(VERSION 3.5 FATAL_ERROR)
+
 SET(OPENSCENEGRAPH_MAJOR_VERSION 3)
 SET(OPENSCENEGRAPH_MINOR_VERSION 6)
 SET(OPENSCENEGRAPH_PATCH_VERSION 5)
@@ -13,27 +15,19 @@ SET(OPENSCENEGRAPH_RELEASE_CANDIDATE 0)
 set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE)
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8.0 FATAL_ERROR)
-
-if(COMMAND cmake_policy)
-    # Works around warnings libraries linked against that don't
-    # have absolute paths (e.g. -lpthreads)
-    cmake_policy(SET CMP0003 NEW)
+# Works around warnings libraries linked against that don't
+# have absolute paths (e.g. -lpthreads)
+cmake_policy(SET CMP0003 NEW)
 
-    # Works around warnings about escaped quotes in ADD_DEFINITIONS
-    # statements.
-    cmake_policy(SET CMP0005 NEW)
+# Works around warnings about escaped quotes in ADD_DEFINITIONS
+# statements.
+cmake_policy(SET CMP0005 NEW)
 
-    # tell CMake to prefer CMake's own CMake modules when available
-    # only available from cmake-2.8.4
-    if("${CMAKE_VERSION}" VERSION_GREATER 2.8.3)
-        cmake_policy(SET CMP0017 NEW)
-    endif()
+cmake_policy(SET CMP0017 NEW)
 
-    # INTERPROCEDURAL_OPTIMIZATION is enforced when enabled.
-    # Allows passing -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON
-    cmake_policy(SET CMP0069 NEW)
-endif()
+# INTERPROCEDURAL_OPTIMIZATION is enforced when enabled.
+# Allows passing -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON
+cmake_policy(SET CMP0069 NEW)
 
 IF(APPLE)
   # Get OSX version in MAJOR.MINOR format
@@ -155,6 +149,7 @@ IF(NOT CMAKE_BUILD_TYPE)
     SET(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel." FORCE)
 ENDIF(NOT CMAKE_BUILD_TYPE)
 
+INCLUDE(GNUInstallDirs)
 
 IF(ANDROID)
     INCLUDE(OsgAndroidMacroUtils)
@@ -902,25 +897,8 @@ IF(DEFINED LIB_POSTFIX)
   # Use LIB_POSTFIX if defined
   SET(OSG_INSTALL_LIBDIR lib${LIB_POSTFIX})
 ELSE()
-  IF(CMAKE_VERSION VERSION_LESS "2.8.5")
-    IF(UNIX AND NOT WIN32 AND NOT APPLE)
-      IF(CMAKE_SIZEOF_VOID_P MATCHES "8")
-        SET(LIB_POSTFIX "64" CACHE STRING "suffix for 32/64 dir placement")
-        MARK_AS_ADVANCED(LIB_POSTFIX)
-      ENDIF()
-    ENDIF()
-    IF(NOT DEFINED LIB_POSTFIX)
-      SET(LIB_POSTFIX "")
-    ENDIF()
-    SET(OSG_INSTALL_LIBDIR lib${LIB_POSTFIX})
-  ELSE()
-    # Use the GNU standard installation directories for CMake >= 2.8.5
-    INCLUDE(GNUInstallDirs)
-    SET(OSG_INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR})
-  ENDIF()
-ENDIF()
-IF(NOT DEFINED LIB_POSTFIX)
-    SET(LIB_POSTFIX "")
+  SET(OSG_INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR})
+  SET(LIB_POSTFIX "")
 ENDIF()
 
 # Here we apparently do some funky stuff with making the bin/ and lib/
@@ -952,25 +930,16 @@ ELSE(WIN32)
     SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_LIBDIR})
 ENDIF(WIN32)
 
-# Testing CMAKE_VERSION is possible in >= 2.6.4 only
-BUILDER_VERSION_GREATER(2 8 0)
-IF(VALID_BUILDER_VERSION)  # If CMake >= 2.8.1
-    FOREACH(CONF ${CMAKE_CONFIGURATION_TYPES})        # For each configuration (Debug, Release, MinSizeRel... and/or anything the user chooses)
-        STRING(TOUPPER "${CONF}" CONF)                # Go uppercase (DEBUG, RELEASE...)
-        SET("CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_LIBDIR}")
-        SET("CMAKE_RUNTIME_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_BINDIR}")
-        IF(WIN32)
-            SET("CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_BINDIR}")
-        ELSE()
-            SET("CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_LIBDIR}")
-        ENDIF()
-    ENDFOREACH()
-ENDIF(VALID_BUILDER_VERSION)
-
-#SET(INSTALL_BINDIR OpenSceneGraph/bin)
-#SET(INSTALL_INCDIR OpenSceneGraph/include)
-#SET(INSTALL_LIBDIR OpenSceneGraph/lib)
-#SET(INSTALL_DOCDIR OpenSceneGraph/doc)
+FOREACH(CONF ${CMAKE_CONFIGURATION_TYPES})        # For each configuration (Debug, Release, MinSizeRel... and/or anything the user chooses)
+    STRING(TOUPPER "${CONF}" CONF)                # Go uppercase (DEBUG, RELEASE...)
+    SET("CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_LIBDIR}")
+    SET("CMAKE_RUNTIME_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_BINDIR}")
+    IF(WIN32)
+        SET("CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_BINDIR}")
+    ELSE()
+        SET("CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_LIBDIR}")
+    ENDIF()
+ENDFOREACH()
 
 ################################################################################
 # User Options
@@ -1222,7 +1191,7 @@ IF(BUILD_DOCUMENTATION)
         ${PROJECT_BINARY_DIR}/doc/OpenSceneGraphReferenceDocs/osg32-32.png COPYONLY
     )
     #INSTALL(FILES ${PROJECT_BINARY_DIR}/doc/${PROJECT_NAME}ReferenceDocs-${OPENSCENEGRAPH_VERSION}.chm DESTINATION doc OPTIONAL COMPONENT openscenegraph-doc)
-    INSTALL(DIRECTORY ${PROJECT_BINARY_DIR}/doc/OpenSceneGraphReferenceDocs DESTINATION doc COMPONENT openscenegraph-doc)
+    INSTALL(DIRECTORY ${PROJECT_BINARY_DIR}/doc/OpenSceneGraphReferenceDocs DESTINATION ${CMAKE_INSTALL_DOCDIR} COMPONENT openscenegraph-doc)
 
     # now set up openthreads documentation generation
     IF(BUILD_REF_DOCS_TAGFILE)
@@ -1238,7 +1207,7 @@ IF(BUILD_DOCUMENTATION)
         ${PROJECT_BINARY_DIR}/doc/OpenThreadsReferenceDocs/osg32-32.png COPYONLY
     )
     #INSTALL(FILES ${PROJECT_BINARY_DIR}/doc/${PROJECT_NAME}ReferenceDocs-${OPENSCENEGRAPH_VERSION}.chm DESTINATION doc OPTIONAL COMPONENT openscenegraph-doc)
-    INSTALL(DIRECTORY ${PROJECT_BINARY_DIR}/doc/OpenThreadsReferenceDocs DESTINATION doc COMPONENT openthreads-doc)
+    INSTALL(DIRECTORY ${PROJECT_BINARY_DIR}/doc/OpenThreadsReferenceDocs DESTINATION ${CMAKE_INSTALL_DOCDIR} COMPONENT openthreads-doc)
 
     # Process our other doxyfiles but don't create targets for these
     CONFIGURE_FILE(${PROJECT_SOURCE_DIR}/doc/Doxyfiles/all_Doxyfile
diff --git a/CMakeModules/FindCOLLADA.cmake b/CMakeModules/FindCOLLADA.cmake
index 7caf3545eb8..6a8f271e788 100644
--- a/CMakeModules/FindCOLLADA.cmake
+++ b/CMakeModules/FindCOLLADA.cmake
@@ -313,7 +313,7 @@ IF(COLLADA_DYNAMIC_LIBRARY OR COLLADA_STATIC_LIBRARY)
 
         IF (COLLADA_INCLUDE_DOMANY_DIR)
             SET(COLLADA_DOM_2_4_OR_LATER TRUE)
-        ELSEIF()
+        ELSE()
             SET(COLLADA_DOM_2_4_OR_LATER FALSE)
         ENDIF()
 
diff --git a/CMakeModules/OsgMacroUtils.cmake b/CMakeModules/OsgMacroUtils.cmake
index cafd8725ba3..1c2e6cb770a 100644
--- a/CMakeModules/OsgMacroUtils.cmake
+++ b/CMakeModules/OsgMacroUtils.cmake
@@ -487,7 +487,7 @@ MACRO(SETUP_EXAMPLE EXAMPLE_NAME)
         IF(APPLE)
             INSTALL(TARGETS ${TARGET_TARGETNAME} RUNTIME DESTINATION share/OpenSceneGraph/bin BUNDLE DESTINATION share/OpenSceneGraph/bin )
         ELSE(APPLE)
-            INSTALL(TARGETS ${TARGET_TARGETNAME} RUNTIME DESTINATION share/OpenSceneGraph/bin COMPONENT openscenegraph-examples )
+            INSTALL(TARGETS ${TARGET_TARGETNAME} RUNTIME DESTINATION bin COMPONENT openscenegraph-examples )
             IF(MSVC)
                 INSTALL(FILES $<TARGET_PDB_FILE:${TARGET_NAME}> DESTINATION share/OpenSceneGraph/bin COMPONENT openscenegraph-examples)
             ENDIF(MSVC)
diff --git a/PlatformSpecifics/Android/android.toolchain.cmake b/PlatformSpecifics/Android/android.toolchain.cmake
index fc349162fb8..7015e6d8f54 100644
--- a/PlatformSpecifics/Android/android.toolchain.cmake
+++ b/PlatformSpecifics/Android/android.toolchain.cmake
@@ -210,7 +210,7 @@
 
 # Modified by Lasse Oorni and Yao Wei Tjong for Urho3D
 
-cmake_minimum_required( VERSION 2.6.3 )
+cmake_minimum_required( VERSION 3.5 )
 
 # Urho3D: on Windows Cygwin-based NDK tools may fail in the linking phase with too long command line. Turn on response files to avoid this
 if( CMAKE_HOST_WIN32 )
diff --git a/examples/osgCMakeExample/CMakeLists.txt b/examples/osgCMakeExample/CMakeLists.txt
index cd843299add..418708630d0 100644
--- a/examples/osgCMakeExample/CMakeLists.txt
+++ b/examples/osgCMakeExample/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 3.5)
 
 SET(PROJECT_NAME osgCMakeExample)
 
diff --git a/examples/osgemscripten/CMakeLists.txt b/examples/osgemscripten/CMakeLists.txt
index b2bc9875a5a..10c4daf687e 100644
--- a/examples/osgemscripten/CMakeLists.txt
+++ b/examples/osgemscripten/CMakeLists.txt
@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8.0 FATAL_ERROR)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.5 FATAL_ERROR)
 
 # Path to OpenSceneGraph
 SET(OSG_DIR "${CMAKE_SOURCE_DIR}/../..")