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[Qemu-devel] [BUG] [low severity] a strange appearance of message involving slirp while doing "empty" make

Folks,

If qemu tree is already fully built, and "make" is attempted, for 3.1, the 
outcome is:

$ make
        CHK version_gen.h
$

For 4.0-rc0, the outcome seems to be different:

$ make
make[1]: Entering directory '/home/build/malta-mips64r6/qemu-4.0/slirp'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/build/malta-mips64r6/qemu-4.0/slirp'
        CHK version_gen.h
$

Not sure how significant is that, but I report it just in case.

Yours,
Aleksandar

On 20/03/2019 22.08, Aleksandar Markovic wrote:
>
Folks,
>
>
If qemu tree is already fully built, and "make" is attempted, for 3.1, the
>
outcome is:
>
>
$ make
>
CHK version_gen.h
>
$
>
>
For 4.0-rc0, the outcome seems to be different:
>
>
$ make
>
make[1]: Entering directory '/home/build/malta-mips64r6/qemu-4.0/slirp'
>
make[1]: Nothing to be done for 'all'.
>
make[1]: Leaving directory '/home/build/malta-mips64r6/qemu-4.0/slirp'
>
CHK version_gen.h
>
$
>
>
Not sure how significant is that, but I report it just in case.
It's likely because slirp is currently being reworked to become a
separate project, so the makefiles have been changed a little bit. I
guess the message will go away again once slirp has become a stand-alone
library.

 Thomas

On Fri, 22 Mar 2019 at 04:59, Thomas Huth <address@hidden> wrote:
>
On 20/03/2019 22.08, Aleksandar Markovic wrote:
>
> $ make
>
> make[1]: Entering directory '/home/build/malta-mips64r6/qemu-4.0/slirp'
>
> make[1]: Nothing to be done for 'all'.
>
> make[1]: Leaving directory '/home/build/malta-mips64r6/qemu-4.0/slirp'
>
>       CHK version_gen.h
>
> $
>
>
>
> Not sure how significant is that, but I report it just in case.
>
>
It's likely because slirp is currently being reworked to become a
>
separate project, so the makefiles have been changed a little bit. I
>
guess the message will go away again once slirp has become a stand-alone
>
library.
Well, we'll still need to ship slirp for the foreseeable future...

I think the cause of this is that the rule in Makefile for
calling the slirp Makefile is not passing it $(SUBDIR_MAKEFLAGS)
like all the other recursive make invocations. If we do that
then we'll suppress the entering/leaving messages for
non-verbose builds. (Some tweaking will be needed as
it looks like the slirp makefile has picked an incompatible
meaning for $BUILD_DIR, which the SUBDIR_MAKEFLAGS will
also be passing to it.)

thanks
-- PMM