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SubjectRe: Building a subdirectory ignores parent subdir-ccflags
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Dne 15.8.2016 v 23:29 Joe Perches napsal(a):
> On Mon, 2016-08-15 at 14:14 -0700, Joe Perches wrote:
>> On Mon, 2016-08-15 at 23:04 +0200, Greg Kroah-Hartman wrote:
>>> On Mon, Aug 15, 2016 at 12:33:23PM -0700, Joe Perches wrote:
>>>> Start to rationalize include paths in source code files.
>> []
>>>> diff --git a/drivers/staging/lustre/Makefile b/drivers/staging/lustre/Makefile
>> []
>>>> @@ -1,2 +1,5 @@
>>>> +subdir-ccflags-y += -I$(srctree)/drivers/staging/lustre/include/
>>>> +subdir-ccflags-y += -I$(srctree)/drivers/staging/lustre/lustre/include/
>>>> +
>>>> obj-$(CONFIG_LNET) += lnet/
>>>> obj-$(CONFIG_LUSTRE_FS) += lustre/
>>> This is good, but does this break the subdir make command:
>>> make M=drivers/staging/lustre/foo_dir/
>>> ?
>> hmm, yeah, it does. Oh well, nevermind for awhile.
>>> I remember the last time I tried to clean this up, it took a while...
>> It seems like something the build tools should
>> handle correctly now, but I'll look at it.
>
> Perhaps making a specific directory should also walk up
> any parent directory Makefiles looking for subdir flags.
>
> Is that unreasonable? Any suggestions?

I suggest to do make drivers/staging/lustre/. If building the lustre
subdirectories is going to be a common use case, then you can propagate
the subdir-ccflags-y assignment down to the individual Makefiles.

Michal

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