Re: [dpdk-dev] [PATCH v3 3/3] doc: add cross compile part for sample applications

[Jerin Jacob <jerin.jacob@caviumnetworks.com>]

-----Original Message-----
> Date: Mon, 17 Sep 2018 10:28:57 +0000
> From: "Gavin Hu (Arm Technology China)" <Gavin.Hu@arm.com>
> To: Jerin Jacob <jerin.jacob@caviumnetworks.com>
> CC: "dev@dpdk.org" <dev@dpdk.org>, Honnappa Nagarahalli
>  <Honnappa.Nagarahalli@arm.com>, Steve Capper <Steve.Capper@arm.com>, Ola
>  Liljedahl <Ola.Liljedahl@arm.com>, nd <nd@arm.com>, "stable@dpdk.org"
>  <stable@dpdk.org>
> Subject: RE: [PATCH v3 3/3] doc: add cross compile part for sample
>  applications
> 
> > -----Original Message-----
> > From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
> > Sent: Monday, September 17, 2018 5:48 PM
> > To: Gavin Hu (Arm Technology China) <Gavin.Hu@arm.com>
> > Cc: dev@dpdk.org; Honnappa Nagarahalli
> > <Honnappa.Nagarahalli@arm.com>; Steve Capper
> > <Steve.Capper@arm.com>; Ola Liljedahl <Ola.Liljedahl@arm.com>; nd
> > <nd@arm.com>; stable@dpdk.org
> > Subject: Re: [PATCH v3 3/3] doc: add cross compile part for sample
> > applications
> >
> > -----Original Message-----
> > > Date: Mon, 17 Sep 2018 15:47:35 +0800
> > > From: Gavin Hu <gavin.hu@arm.com>
> > > To: dev@dpdk.org
> > > CC: gavin.hu@arm.com, Honnappa.Nagarahalli@arm.com,
> > > steve.capper@arm.com,  Ola.Liljedahl@arm.com,
> > > jerin.jacob@caviumnetworks.com, nd@arm.com,  stable@dpdk.org
> > > Subject: [PATCH v3 3/3] doc: add cross compile part for sample
> > > applications
> > > X-Mailer: git-send-email 2.11.0
> > >
> > > External Email
> > >
> > > Fixes: 7cacb05655 ("doc: add generic build instructions for sample
> > > apps")
> > > Cc: stable@dpdk.org
> > >
> > > Signed-off-by: Gavin Hu <gavin.hu@arm.com>
> > > Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
> > > ---
> > >  doc/guides/sample_app_ug/compiling.rst | 15 ++++++++++++++-
> > >  1 file changed, 14 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/doc/guides/sample_app_ug/compiling.rst
> > > b/doc/guides/sample_app_ug/compiling.rst
> > > index a2d75ed22..6f04743c8 100644
> > > --- a/doc/guides/sample_app_ug/compiling.rst
> > > +++ b/doc/guides/sample_app_ug/compiling.rst
> > > @@ -9,7 +9,6 @@ This section explains how to compile the DPDK sample
> > applications.
> > >  To compile all the sample applications
> > >  --------------------------------------
> > >
> > > -
> > >  Set the path to DPDK source code if its not set:
> > >
> > >      .. code-block:: console
> > > @@ -93,3 +92,17 @@ Build the application:
> > >
> > >          export RTE_TARGET=build
> > >          make
> > > +
> > > +To cross compile the sample application(s)
> > > +------------------------------------------
> > > +
> > > +For cross compiling the sample application(s), please append
> > 'CROSS=$(CROSS_COMPILER_PREFIX)' to the 'make' command.
> > > +In example of AARCH64 cross compiling:
> > > +
> > > +    .. code-block:: console
> > > +
> > > +        export RTE_TARGET=build
> > > +        export RTE_SDK=/path/to/rte_sdk
> > > +        make -C examples CROSS=aarch64-linux-gnu-
> > > +               or
> > > +        make CROSS=aarch64-linux-gnu-
> >
> > It should be make -C examples/l3fwd CROSS=aarch64-linux-gnu-, Right? as
> > without giving directory it builds the SDK only.
> 
> -C examples/l3fwd can be ignored if the $(pwd) is already in there.

Yes. Since it mentioned as "or" it better to explicitly mentioned in it.

i.e

make -C examples CROSS=aarch64-linux-gnu-

or

cd $(pwd)/examples/<example_app>
make CROSS=aarch64-linux-gnu-

or

make -C examples/<example_app> CROSS=aarch64-linux-gnu-

> 
> >
> > > --
> > > 2.11.0
> > >