Best method to ask input or check existence of a variable

[zamek42]

Hi All,

I would like to make a target to create a new project.
I cannot solve to ask the name of the project in a recipe?

Another possible method, to set the name with a variable, but I cannot 
check the existence of
the variable because it will be part of all target:

create_project:
ifndef PROJECT_NAME
    $(error No project name, please call make with 
PROJECT_NAME=<projectname>)
endif

all of other target prints this error.

--
thx in advance
Zoltan (Zamek) Zidarics
programmer
email:address@hidden