[dpdk-dev] [PATCH] rte.extvars.mk: allow overriding RTE_SDK_BIN from the environment

[Matthew Hall]

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.