[U-Boot] [RFC PATCH] kbuild: use "cc-cross-prefix" to choose CROSS_COMPILE

[Gerhard Sittig]

On Wed, Mar 05, 2014 at 19:27 +0900, Masahiro Yamada wrote:
> 
> If you like, you can still pass CROSS_COMPILE from the command line
> or by the environment variable.
> 
>   ifeq ($(CROSS_COMPILE),)
>   CROSS_COMPILE := $(call cc-cross-prefix, arm-linux- arm-linux-gnueabi-)
>   endif
> 
> $(call cc-cross-prefix, ...) is invoked only when $(CROSS_COMPILE) is empty,
> that is CROSS_COMPILE is not explicitely specified.

Ouch!  Please don't do this.  You may call it "not explicitely
specified", while I call it "explicitly NOT specified".

What I did in the past is to specifically pass 'CROSS_COMPILE='
on the command line, explicitly voiding any potentially set
value.  If the computer takes this as an invitation to come up
with its own idea of what I might have meant, this is bad.

I agree with Detlev, and strongly so.  Computers should strictly
do what they were told to do, and not try guess (they are awful
at that), or even to outsmart the user (this is counter
productive, and causes a lot of heat).


virtually yours
Gerhard Sittig
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