From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthew Hall <mhall@mhcomputing.net>
Subject: Re: [PATCH] rte.extvars.mk: allow overriding RTE_SDK_BIN
 from the environment
Date: Wed, 20 Jan 2016 21:15:22 -0800
Message-ID: <56A0696A.8090506@mhcomputing.net>
References: <1453267824-2880-1-git-send-email-mhall@mhcomputing.net>
 <2864842.XzLbtfflbQ@xps13>
Mime-Version: 1.0
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
Cc: dev@dpdk.org
To: Thomas Monjalon <thomas.monjalon@6wind.com>
Return-path: <dev-bounces@dpdk.org>
Received: from mail.mhcomputing.net (master.mhcomputing.net [74.208.228.170])
 by dpdk.org (Postfix) with ESMTP id 79DFA8E64
 for <dev@dpdk.org>; Thu, 21 Jan 2016 06:15:24 +0100 (CET)
In-Reply-To: <2864842.XzLbtfflbQ@xps13>
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

On 1/20/16 7:27 AM, Thomas Monjalon wrote:
> Hi Matthew,
>
> RTE_SDK_BIN is an internal variable and should not be overriden.
 >
> Have you installed DPDK somewhere? Example:
> 	make install O=mybuild DESTDIR=mylocalinstall
>
> Then you should build your app like this:
> 	make RTE_SDK=$(readlink -e ../dpdk/mylocalinstall/usr/local/share/dpdk)

Hello Thomas,

Is the way the make install target really works documented somewhere?

This target did not exist when I first used DPDK in 2011, and since then 
I saw various documentation on building DPDK in various places, but not 
that much explanation what make install actually does. I recall various 
list threads about changing its behavior as well.

For example, if I look at this apparently most official document:

http://dpdk.org/doc/guides/linux_gsg/build_dpdk.html

It has build examples such as:

make install T=x86_64-native-linuxapp-gcc

But it does not discuss "O=" or "DESTDIR=" or any other additional 
options. From some experiments on my machine, it looks like maybe I 
could do this:

make install "T=${RTE_TARGET}" "O=build" "DESTDIR=build"

Is that a valid possibility, to keep it all in one easy directory?

Thanks,
Matthew.