Re: [PATCH] allow CROSS_COMPILE override

[Brian Murphy <brian@murphy.dk>]

Daniel Jacobowitz wrote:

> Silly question: why does this matter if CROSS_COMPILE is on the command
> line?  Command line definitions override anything in the makefile.  Is
> it falling off the command line in a recursive make?
>  
You need ?= to allow the define in the top level makefile to override 
that in
the sub-makefile. You also need it if you want to get the value from an
environment variable and not from something like this:

make CROSS_COMPILE=xxx

which is the only case where it works now.

/Brian