parse level

[Noel Yap]

I want to be able to execute some code at most once.  But due to reparsing of 
the makefile, the code is executing more than once.

Here's the code if it matters:

ifeq ($(wildcard $(build.DIR)),)
  ifndef $(build.DIR).warning
  $(build.DIR).warning := 1
    $(warning $(build.DIR) does not exist.)
    $(warning You probably want to create a symlink for it.)
    $(warning If you continue, a directory, not a symlink,  will be created for 
you.)
    $(warning Hit any key to continue or Ctrl-C to break.)
    $(shell read)
  endif
endif


I know there's a macro MAKELEVEL that signifies the number of times make calls 
have recursed.  Is there something similar that signifies the number of times a 
makefile is being parsed?  Is there some other way to do what I want (without 
having to create
marker files)?

Thanks,
Noel