SourceForge Submitter: mcbain4711 .
<target name="init" unless="init.disable"
depends="_buildmagic:init"/>

Ant always executes the "depends" targets. The unless
attribute only prevents the execution of the target "init"
(where the unless ist used).

The idea of property "init.disable" is to prevent the
multiple initialization of the buildmagic-system.
This property is set to "true" at the end
of "_buildmagic:init" target.
Without using "antcall" Task it is not nessessary to do
so, because ant only run the init target once,
independently the number of dependencies on "init" in
other targets. Maybe ant calculates the graph of target
execution order and call every target only once...

This does not match to the case in which antcall is used.
With antcall the "only-once" rule is broken and for every
single antcall the buildsystem??????????????????s init targets are
executed.
This makes the "configure" target a lot of times and
makes the whole build very slow. Beside the build-
output is polluted by the "Overriding previous definition of
reference to ..." messages.

Solution: move the unless="init.disable" to the
target "_buildmagic:init" (common.xml) !