Since this is a C project, a "Namespaces" page is not really useful.
# This will remove the Namespaces entry from the Quick Index
# and from the Folder Tree View (if specified). The default is YES.
-SHOW_NAMESPACES = YES
+SHOW_NAMESPACES = NO
# The FILE_VERSION_FILTER tag can be used to specify a program or script that
# doxygen should invoke to get the current version for each file (typically from