Add a cache variable to make doxygen create a treeview in html documentation.

CMakeLists.txt

@@ -42,6 +42,9 @@ ENDIF()
 # Activate test using UR5 if requested
 SET (TEST_UR5 FALSE CACHE BOOL "Activate tests using ur5")
 
+# Ask Doxygen to create a tree view in html documentation
+SET(DOXYGEN_TREEVIEW "NO" CACHE STRING "Set to YES to generate a tree view in the html documentation")
+
 SEARCH_FOR_BOOST()
 ADD_DOC_DEPENDENCY("hpp-model >= 3.0.0")
 ADD_DOC_DEPENDENCY("hpp-fcl")

doc/Doxyfile.extra.in

@@ -14,3 +14,5 @@ ALIASES   += Link{1}="\ref \1"
 ALIASES   += Link{2}="\ref \1 \"\2\""
 ALIASES   += LHPP{2}="\Link{hpp::\1::\2,\2}"
 ALIASES   += LModel{1}="\LHPP{model,\1}"
+
+GENERATE_TREEVIEW	 = @DOXYGEN_TREEVIEW@