diff --git a/CMakeLists.txt b/CMakeLists.txt
index e68d998..aec5757 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -135,8 +135,11 @@ SetInstallPaths()
 
 ## DOXYGEN 
 #
-include(CMakeCommon/CreateDoxygenDocumentationTarget.cmake)
-CreateDoxygenDocumentationTarget()
+if(EXISTS "${EMBB_SOURCE_DIR}/doc/reference/Doxyfile.in")
+  include(CMakeCommon/CreateDoxygenDocumentationTarget.cmake)
+  CreateDoxygenDocumentationTarget()
+endif()
+
 
 if (INSTALL_DOCS STREQUAL ON)
   install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/doc/
diff --git a/scripts/create_tarball.sh b/scripts/create_tarball.sh
old mode 100644
new mode 100755
index ceef8e5..33e11e4
--- a/scripts/create_tarball.sh
+++ b/scripts/create_tarball.sh
@@ -140,6 +140,10 @@ rsync \
  --exclude "doc/tutorial/content" \
  --exclude "doc/tutorial/*.tex" \
  --exclude "doc/tutorial/*.bib" \
+ --exclude "doc/reference/*.xml" \
+ --exclude "doc/reference/*.dox" \
+ --exclude "doc/reference/*.in" \
+ --exclude "doc/reference/*.css" \
  --exclude "doc/examples/insert_snippets.py" \
  --archive --recursive ${d} $MYTMPDIR/${n}
  
diff --git a/scripts/insert_license.sh b/scripts/insert_license.sh
old mode 100644
new mode 100755
diff --git a/scripts/remove_license.sh b/scripts/remove_license.sh
old mode 100644
new mode 100755
diff --git a/scripts/run_cpplint.sh b/scripts/run_cpplint.sh
old mode 100644
new mode 100755
diff --git a/scripts/run_tests_cygwin.sh b/scripts/run_tests_cygwin.sh
old mode 100644
new mode 100755
diff --git a/scripts/run_tests_linux.sh b/scripts/run_tests_linux.sh
old mode 100644
new mode 100755