z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

Targets
what happens when recursive calls are made to make. The output correctly
shows line breaks in recipes that are divided into several lines of text using
the \ sequence.
–p Prints the makefile after it has been processed to include macro and target
definitions. This display is in human-readable form useful for debugging, but
you cannot use it as input to make.
–q Checks whether the target is up to date. If it is up to date, make exits with
a status of 0; otherwise, it exits with a status of 1 (typically interpreted as an
error by other software). No commands are run when –q is specified.
–r Does not read the startup file. Various control macros and default rules will
not be defined.
–S Ends make if an error occurs during operations to bring a target up to date
(opposite of –k). This is the default.
–s Specifies that recipe commands, warning messages, or touch messages
(see the –t option) not be displayed. This is equivalent to the .SILENT
attribute or macro.
–t Touches the target to mark them as up-to-date, but only executes
commands to change a target if the target has a plus sign (+) command
prefix. make does not touch up-to-date targets or targets that have
prerequisites but not recipes. make displays a message for each touched
target file indicating the filename.
–u Forces an unconditional update: make behaves as if all the prerequisites of
the given target are out of date.
–V Prints the version number of make and a list of built-in rules.
–v Causes make to display a detailed account of its progress. This includes
what files it reads, the definition and redefinition of each macro, metarule
and suffix rule searches, and other information.
–x Exports all macro definitions to the environment. This happens just before
make begins making targets (but after it has read the entire makefile).
make
A target is normally a file that you want to ensure is up to date with the files on
which it is dependent (the prerequisites). For example, you may want to check to
see if a is based on the most recent version of the corresponding source code. If it
is not, then have the source code recompiled to get an up-to-date version. In this
case, the compiled program file is the target and the corresponding source files are
prerequisites (that is, the files on which a target is dependent).
make updates all targets that are specified on the command line. If you do not
specify any target, make updates the targets in the first rule of the makefile. A
target is out of date if it is older than any of its prerequisites (based on modification
times) or if it does not exist. To update a target, make first recursively ensures that
all the target’s prerequisites are up to date, processing them in the order in which
they appear in the rule. If the target itself is out of date, make then runs the recipe
associated with the target. If the target has no associated recipe, make considers it
up to date.
make also supports another form of targets, known as special targets, described in
“Special Target Directives” on page 404.
Chapter 2. Shell command descriptions 393