Re: argument 'v=x' does not appear to work as in the manual ?

[Paul Smith]

On Thu, 2010-11-25 at 20:13 -0800, Mark Galeck (CW) wrote:
> C:\Temp>make CFLAGS+=bar
> foo
> make: *** No targets.  Stop.
> 
> In fact, what is happening, make CFLAGS+=bar, behaves exactly like
> make CFLAGS=bar.

Make is interpreting this as "CFLAGS += bar" since += is a valid
assignment operator, just like it would if you wrote "CFLAGS+=bar"
inside a makefile.

> Please explain?  In any case, how to work around this if I want to
> have a variable name with "+" overridden on command line, can I?

Just as you did inside the makefile: add whitespace.  Not sure exactly
how to do this in Windows, but on UNIX systems this gives the right
result:

        make 'CFLAGS+ = bar'

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