Makefile Variables

A summary of the automatic variables. See Automatic Variables, for full information (taken from GNU Make Manual).

$@

The file name of the target.

$%

The target member name, when the target is an archive member.

$<

The name of the first prerequisite.

$?

The names of all the prerequisites that are newer than the target, with spaces between them. For prerequisites which are archive members, only the member named is used (see Archives).

$^

$+

The names of all the prerequisites, with spaces between them. For prerequisites which are archive members, only the member named is used (see Archives). The value of $^ omits duplicate prerequisites, while $+ retains them and preserves their order.

$*

The stem with which an implicit rule matches (see How Patterns Match).