Surfing centre of African country only 40 per cent built (6)
I believe the answer is:
malibu
'surfing centre' is the definition.
The definition suggests a singular noun which matches the answer.
'african country only 40 per cent built' is the wordplay.
I cannot really understand how this works, but
'country' could be 'mali' (Mali is an example) and 'mali' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'of' acts as a link.
Can you help me to learn more?
(Other definitions for malibu that I've seen before include "Californian surfing town" , "California beach" , "Californian beach" , "Site of the Getty Villa museum" , "City in California" .)