The most common and most likely answer to this crossword clue is the 8 letter word COMPILER
C
O
M
P
I
L
E
R
Buddy explains!

The straight part
We know that "his namesake perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case his namesake perhaps = compiler.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does COMPILER mean?
COMPILER noun- One who compiles.
- A computer program which transforms source code into object code.