The <or>
element doesn't have any attributes and accepts an
arbitrary number of conditions as nested elements. This condition is true if at
least one of its contained conditions is, conditions will be evaluated in the order
they have been specified in the build file.
The <or>
condition has the same shortcut semantics as the
||
operator in some programming languages, as soon as one of
the nested conditions is true, no other condition will be evaluated.