MPE/iX Shell and Utilities Reference Manual, Vol 1

make(1) MPE/iX Shell and Utilities make(1)

$< Subset of $ˆ which prompt the rule’s execution (speciﬁed on the rule line where the

$< appears). In normal rules, this contains the list of all recently changed prerequi-

sites. In inference rules, this contains the single prerequisite associated with the cur-

rent, executing rule.

$> The name of the library if the current target is a library member.

$* The target name with no sufﬁx ($(%:db)) or the value of the stem in a meta-rule.

The constructs $$@, $$%, $$>, and $$* yield meaningful results when placed in a prerequi-

site list as a dynamic prerequisite.

$$@ stands for the target currently being made. The following two examples are equivalent:

fred : $$@.c

fred : fred.c

The construct may be modiﬁed:

fred.o : $$(@:b).c

If you are building a library, $$% stands for the name of the archive member being made. If

you are building a normal target, $$% stands for the name of the target currently being made.

$$* stands for the name of the current target being made, but with no sufﬁx.

If you are building a library, $$> stands for the name of the archive library being made. If

you are not building a library, its use is invalid.

Comments

Comments begin with the number sign (#) character and extend to the end-of-line. make dis-

cards all comment text.

Makeﬁle Contents

Inside makeﬁles, you can split long lines over several lines of text. To do this, put a backslash

(\) at the very end of the line. You can use this technique to extend comments as well as rec-

ipe lines and macro deﬁnitions for example.

If a rule or macro deﬁnition must contain a # character, use \#; otherwise, make mistakes the

# for the beginning of a comment. Also, $$ stands for $.

File names that contain a colon (:) must always be enclosed in quotes (""):

"a:target" : "a:prereq"

Commands and Utilities 1-339