On Wed, Jun 13 2018, James Simmons wrote:

>> We don't need to set subdir-ccflags-y in every Makefile.
>> The whole point of the "subdir-" bit is that the setting
>> can go once in the top-level Makefile.
>> 
>
> Nak: When attempting to build individual components I get:
>
> ~/lustre-upstream$ make SUBDIRS=drivers/staging/lustre/lustre/lmv modules 
> -j 16
>
>   WARNING: Symbol version dump ./Module.symvers
>            is missing; modules will have no dependencies and modversions.
>
>   CC [M]  drivers/staging/lustre/lustre/lmv/lmv_obd.o
>   CC [M]  drivers/staging/lustre/lustre/lmv/lmv_intent.o
>   CC [M]  drivers/staging/lustre/lustre/lmv/lmv_fld.o
>   CC [M]  drivers/staging/lustre/lustre/lmv/lproc_lmv.o
> drivers/staging/lustre/lustre/lmv/lproc_lmv.c:38:28: fatal error: 
> lprocfs_status.h: No such file or directory
>  #include <lprocfs_status.h>
>                             ^
> compilation terminated.

Yes, I noticed that too.  Thanks.
It seems to suggest that subdir-ccflags-y isn't really a useful macro.
Maybe we should stick with cc-flags-y.  It is much more widely used.

Thanks,
NeilBrown