Web links the compiler with mum (4)
I believe the answer is:
mesh
'web' is the definition.
(I've seen this before)
'the compiler with mum' is the wordplay.
'the compiler' becomes 'me' (the person who is writing these clues).
'with' says to put letters next to each other.
'mum' becomes 'sh' (I've seen this in other clues).
'me'+'sh'='MESH'
'links' is the link.
(Other definitions for mesh that I've seen before include "Work well together" , "fit together" , "Knit or weave for Shem" , "Lattice" , "Become entangled - become engaged" .)