Force exit from a Makefile target without raising an error

Question

I work with a Makefile generated by an external tool (Netbeans), where I can not change the logic of the main target, but I am able to "inject" logic in a target that is executed before the actual build (.build-pre to be specific in Netbeans-generated Makefile)

I would like for that target to conditionally terminate the make execution, but without raising an error. If I do

exit 

inside the "pre" rule, nothing happens (I mean, the rule terminates, but make continues). If I add

exit 1 

make will terminate, but it will return an error status.

Is there a way to force make to exit in a clean way? I searched for make functions, but found only error/warn/info, but nothing like exit.

Thanks in advance!

EDIT: Based on comments it does not seem possible. Pity.

For completeness, a more specific example of what I'd like to achieve:

default: pre   @echo "Doing default"  pre:    @echo "Doing pre" ifeq "$(SOME_VARIABLE)" "yes"   exit 0 fi 

With Makefile like above, I'd like to be able for pre to execute, and conditionally prevent 'default' from executing, but still return 0 to the shell.

Answer 1

You can have the all target do nothing if a variable is not set:

ifeq ($(SOME_VAR),) $(info SOME_VAR not set!) all: else all: target1 target2 targetetc endif