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'
--
-------------------------------------------------------------------------------
Paul D. Smith <[email protected]> Find some GNU make tips at:
http://www.gnu.org http://make.mad-scientist.net
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist
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