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Date: Fri, 27 Nov 2015 17:20:43 +0100
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From: David Marchand <david.marchand@6wind.com>
To: Thomas Monjalon <thomas.monjalon@6wind.com>,
 Panu Matilainen <pmatilai@redhat.com>, "dev@dpdk.org" <dev@dpdk.org>
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On Fri, Nov 27, 2015 at 5:01 PM, Ferruh Yigit <ferruh.yigit@intel.com>
wrote:

> As far as I know only "?=" assignment overridden by command line.
>
> Basic experiment:
>
> # cat Makefile
> A ?= a
> B := b
> C = c
>
> all:
>         @echo $(A) $(B) $(C)
>
> -----
>
> # make
> a b c
>
> # A=x B=x C=x make
> x b c
>

Those variables are passed through env, but if you give them to make.

$ make A=x B=x C=x
x x x


-- 
David Marchand