On Fri, Oct 20, 2023 at 12:59:57PM -0700, Richard Cochran wrote:
> On Fri, Oct 20, 2023 at 07:15:59PM +0200, Erez wrote:
>
> > And we can change CC to
> > CC ?= ...
> >
> > In case CC comes from the build, like in Yocto and Debian.
>
> Nah, build systems that don't want to use gcc can and should dial what
> they want on the command line:
>
> make CC=abcxyz
Or maybe ?= will solve the issue of passing CC into the shell script...
commit d3dd51ba611802d7cbb28631cb943cb882fa4aac
Author: Changqing Li <changqing...@windriver.com>
Date: Wed Nov 23 08:23:46 2022 +0800
makefile: use conditional assignment for KBUILD_OUTPUT
Refer [1],from make 4.4, all variables that are marked as export will
also be passed to the shell started by the shell function. use "=" will
make KBUILD_OUTPUT always empty for shell function, use "?=" to make
"export KBUILD_OUTPUT" in enrironment can work.
[snip of 4.4 NEWS]
* WARNING: Backward-incompatibility!
Previously makefile variables marked as export were not exported to
commands
started by the $(shell ...) function. Now, all exported variables are
exported to $(shell ...).
[snip]
Thanks,
Richard
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