Clean .bbl files with latexmk -C

Question

I use TeXLive 2012 and compile with run

latexmk -pvc -pdf -quiet test.tex

later I clean the directory with

latexmk -C

But test.bbl remains. How can I help latexmk to find bbl files?

test.bbl (first lines)

% $ biblatex auxiliary file $
% $ biblatex bbl format version 2.1 $
% Do not modify the above lines!
%
% This is an auxiliary file used by the 'biblatex' package.
% This file may safely be deleted. It will be recreated by
% biber as required.
%

Answer 1

By default, latexmk treats .bbl files as non-regeneratable. This is because the .bib from which they are made is not always available. See the documentation for a fuller explanation, especially the explanation of the $bibtex_use variable. To get latexmk -C to delete .bbl files, put the following in an initialization file:

$bibtex_use = 2;

Answer 2

Another option to the presumably canonical answer John gave is specifying $clean_ext in a latexmkrc file, which contains your personalized global options. This file can be in one of the places I outlined in my answer to Latexmk: makeglossaries, Biber and pdfLaTeX / Where to put latexmkrc?. Also see the latexmk manual.

My complete list of extensions looks like this:

$clean_ext = 'synctex.gz synctex.gz(busy) run.xml tex.bak bbl bcf fdb_latexmk run tdo %R-blx.bib'

(As a result of -- I think -- SyncTeX, latexmk, Texmaker, biblatex, Biber, todonotes)

Answer 3

Reading from the documentation:

-bibtex-cond1

... .bbl files are only treated as precious if one or more bibfiles fails to exist.

Thus you simply do:

latexmk -bibtex-cond1 -C