diff --git a/.travis.yml b/.travis.yml
index 2b0781d4..24bf5051 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -72,7 +72,10 @@ before_script :
   - sleep 3 # give xvfb some time to start
   # we have:  qPCR4vir/nana/../nana-demo and  now we are in: qPCR4vir/nana/  our executable tests will access: ../nana-demo/Examples/*.bmp etc.(need to be in parallel with nana-demo/Examples)
   #- cd ../nana-demo
-  - mkdir bin
+  - mkdir ../nana_lib
+  - mkdir ../nana_demo_bin
+  - cd ../nana_lib
+  - mkdir  bin
   - cd bin
 
   
@@ -92,15 +95,20 @@ before_script :
   
   
 script:
-  - cmake -G"Unix Makefiles" .. -DNANA_CMAKE_ENABLE_JPEG=ON -DNANA_CMAKE_ENABLE_PNG=OFF -DNANA_CMAKE_BUILD_DEMOS=ON -DNANA_CMAKE_ENABLE_AUDIO=OFF -DNANA_CMAKE_FIND_BOOST_FILESYSTEM=ON -DNANA_CMAKE_BOOST_FILESYSTEM_FORCE=OFF  -DNANA_CMAKE_AUTOMATIC_GUI_TESTING=ON
+  # Installing: the static "nana lib" will be in DESTDIR/CMAKE_INSTALL_PREFIX/lib/
+  # and the includes files "nana" in DESTDIR/CMAKE_INSTALL_PREFIX/include/
+  # we are in "... nana/../nana_lib/bin/" we need "../../nana" to get the CMakeList.txt of nana.
+  # Thus, make install will put the nana.lib in "... nana/../nana_lib/lib/"
+  # and the includes in "... nana/../nana_lib/include/"
+  - cmake -G"Unix Makefiles" ../../nana -DCMAKE_INSTALL_PREFIX=.. -DNANA_CMAKE_ENABLE_JPEG=ON -DNANA_CMAKE_ENABLE_PNG=OFF -DNANA_CMAKE_BUILD_DEMOS=ON -DNANA_CMAKE_ENABLE_AUDIO=OFF -DNANA_CMAKE_FIND_BOOST_FILESYSTEM=ON -DNANA_CMAKE_BOOST_FILESYSTEM_FORCE=OFF  -DNANA_CMAKE_AUTOMATIC_GUI_TESTING=ON
   - make
-  #- cd ../lib
-  #- ls
+  - ls
+  - make install
+  - ls
   - cd ..
   - ls
-  - mv -v bin/ ../nana-demo/
-  - cd ../nana-demo/bin
-  - cmake -G"Unix Makefiles" ..  -DNANA_CMAKE_INCLUDE_EXPERIMENTAL_DEMOS=OFF -DNANA_CMAKE_AUTOMATIC_GUI_TESTING=ON
+  - cd ../nana_demo_bin
+  - cmake -G"Unix Makefiles" ../../nana_demo_bin  -DNANA_CMAKE_INCLUDE_EXPERIMENTAL_DEMOS=OFF -DNANA_CMAKE_AUTOMATIC_GUI_TESTING=ON
   - ls
   - ./a_group_impl
   - ./animate-bmp
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 99b27e2c..782d06cc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -279,15 +279,17 @@ target_link_libraries(${PROJECT_NAME} ${NANA_LINKS})
  #  Headers: use INCLUDE_DIRECTORIES
  #  Libraries: use FIND_LIBRARY and link with the result of it (try to avoid LINK_DIRECTORIES)
 
-                 
+
+ # Installing: the static "nana lib" will be in DESTDIR/CMAKE_INSTALL_PREFIX/lib/
+# and the includes files "include/nana/" in DESTDIR/CMAKE_INSTALL_PREFIX/include/nana/
 install(TARGETS ${PROJECT_NAME}
             ARCHIVE DESTINATION lib
             LIBRARY DESTINATION lib)
 
 # Install include directories too.
 if(NANA_CMAKE_INSTALL_INCLUDES)
-	install(DIRECTORY ${CMAKE_SOURCE_DIR}/include/nana
-			DESTINATION include)
+	install(DIRECTORY ${NANA_INCLUDE_DIR}
+			DESTINATION .)
 endif(NANA_CMAKE_INSTALL_INCLUDES)
 
 set_property( TARGET ${PROJECT_NAME} PROPERTY CXX_STANDARD 14 )
@@ -302,6 +304,9 @@ message ( "CMAKE_STATIC_LINKER_FLAGS= "  ${CMAKE_STATIC_LINKER_FLAGS})
 message ( "NANA_LINKS              = "  ${NANA_LINKS})
 message ( "DESTDIR                 = "  ${DESTDIR})
 message ( "CMAKE_INSTALL_PREFIX    = "  ${CMAKE_INSTALL_PREFIX})
+message ( "NANA_INCLUDE_DIR        = "  ${NANA_INCLUDE_DIR})
+message ( "CMAKE_CURRENT_SOURCE_DIR= "  ${CMAKE_CURRENT_SOURCE_DIR})
+
 message ( "NANA_CMAKE_ENABLE_AUDIO = "  ${NANA_CMAKE_ENABLE_AUDIO})
 message ( "NANA_CMAKE_FIND_BOOST_FILESYSTEM         = "  ${NANA_CMAKE_FIND_BOOST_FILESYSTEM})
 message ( "NANA_CMAKE_BOOST_FILESYSTEM_FORCE        = "  ${NANA_CMAKE_BOOST_FILESYSTEM_FORCE})