a2x
calls dblatex
, you have to set the path for the icons as a dblatex-option, f.ex:
a2x -f pdf --icons --dblatex-opts='-V -T db2latex -I /etc/asciidoc/images/icons' test.txt
(When you use Apache FOP instead of dblatex
you can set the icons path as described in the book "DocBook XSL: The Complete Guide".)