Re: help: conversion from nmake to gnu make

[Paul Smith]

On Tue, 2009-12-01 at 09:34 -0800, Eric Melski wrote:
> Subramanian Olagappan wrote:
> > 
> > I am trying to convert a nmake Makefile to gnumake Makefile. Can someone 
> > help me to convert this code snipet to gnu compatible one
> > 
> > !if "$(LEVEL)"<"0" || "$(LEVEL)">"2"
> > !       error Level is not valid!
> > !endif
> 
> This looks like Microsoft NMAKE.  In general, MS NMAKE has a much more 
> expressive syntax for expressions like this, so you may have some 
> difficulty converting.  However, in this particular case, I think the 
> following GNU make syntax is equivalent:
> 
> ifneq ("$(LEVEL)","1")
>      $(error Level is not valid!)
> endif

That's not equivalent.  But this would be:

ifeq (,$(filter $(LEVEL), 1 2 3))
  $(error Level is not valid!)
endif

Cheers!