diff -ruN osgQt-3.5.5/CMakeLists.txt my/CMakeLists.txt
--- osgQt-3.5.5/CMakeLists.txt	2016-09-20 07:11:32.000000000 +0200
+++ my/CMakeLists.txt	2017-05-18 04:11:06.929237731 +0200
@@ -543,15 +543,7 @@
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG")
 ENDIF()
 
-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(LIB_POSTFIX ${LIB_SUFFIX})
 
 # Here we apparantly do some funky stuff with making the bin/ and lib/
 # folders which is probably needed to work around a very old CMake bug?
@@ -877,7 +869,7 @@
         ${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 ${GENTOO_DOCDIR} COMPONENT openscenegraph-doc)
 
     # now set up openthreads documentation generation
     IF(BUILD_REF_DOCS_TAGFILE)
@@ -893,7 +885,7 @@
         ${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 ${GENTOO_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 -ruN osgQt-3.5.5/CMakeModules/OsgMacroUtils.cmake my/CMakeModules/OsgMacroUtils.cmake
--- osgQt-3.5.5/CMakeModules/OsgMacroUtils.cmake	2016-09-20 07:11:32.000000000 +0200
+++ my/CMakeModules/OsgMacroUtils.cmake	2017-05-18 04:30:26.646257926 +0200
@@ -462,9 +462,9 @@
         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 AND NOT CMAKE_BUILD_TYPE STREQUAL "Release")
-                INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_TARGETNAME}${CMAKE_BUILD_POSTFIX}.pdb DESTINATION share/OpenSceneGraph/bin COMPONENT openscenegraph-examples)
+                INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_TARGETNAME}${CMAKE_BUILD_POSTFIX}.pdb DESTINATION bin COMPONENT openscenegraph-examples)
             ENDIF(MSVC AND NOT CMAKE_BUILD_TYPE STREQUAL "Release")
         ENDIF(APPLE)