Description - Mks.com

a list, possibly empty, of attributes to apply to the list of targets.
ruleop
an operator token, usually :, that separates the target names from the prerequisite names
and may also affect the processing of the specified targets.
prerequisites
a list of zero or more names the specified targets depend on.
recipe
command to execute to update targets. It may follow on the same line as the prerequisites,
separated from them by a semicolon (;). If such a recipe is present, make takes it as the
first in the list of recipe lines defining how to make the named targets. Additional recipe lines
may follow the first line of the rule. Each subsequent recipe line must begin with a tab
character.
The possible rule operators are described here:
targets : prereqs
simple rule definition. For explicit targets, at most one simple rule may have a recipe, in
contrast with the :: rule operator, whose description follows.
targets :! prereqs
executes the recipe for the associated targets once for each out-of-date prerequisite. In
simple rules, the recipe is executed only once, for all out-of-date prerequisites at the same
time. The $< macro expands to the current prerequisite if it appears in rules with this rule
operator.
targets :^ prereqs
inserts the specified prerequisites before any other prerequisites already associated with the
specified targets.
targets :- prereqs
clears the previous list of prerequisites before adding the new prerequisites.
targets :: prereqs
is used for multiple rules applying to the same target. Each rule can specify a different set of
prerequisites with a different recipe for updating the target. Each rule is treated
independently; the target is remade for each rule with out-of-date prerequisites, using the
corresponding recipe.
targets :| prereqs
can only be used in meta-rules. It tells make to treat each meta-dependency as an
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