The consequence of unfashionable compiler accepting company (7)
I believe the answer is:
outcome
'the consequence' is the definition.
('outcome' can be a synonym of 'consequence')
'unfashionable compiler accepting company' is the wordplay.
'unfashionable' becomes 'out' ('out' can be a synonym of 'unfashionable').
'compiler' becomes 'me' (the person who is writing these clues).
'accepting' is an insertion indicator.
'company' becomes 'co' (abbreviation).
'out'+'me'='outme'
'outme' placed around 'co' is 'OUTCOME'.
'of' is the link.
(Other definitions for outcome that I've seen before include "Cute moo (anag.)" , "Consequence, upshot" , "Denouement" , "consequences" , "'Result, upshot (7)'" .)