[Buildroot] wanna compile busybox and uclib with self modified code, please help

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Arnout Vandecappelle,

On Thu, 29 Aug 2013 07:24:09 +0200, Arnout Vandecappelle wrote:

>   Perhaps you are using an internal toolchain? In that case buildroot 
> also needs to install kernel headers (as part of the toolchain), and this 
> is handled separately. So you should also add this to you local.mk:
> 
> LINUX_HEADERS_OVERRIDE_SRCDIR = /home/wangk/linux-2.6.39

Originally, William said he wanted to modify Busybox and uClibc. So why
would using LINUX_OVERRIDE_SRCDIR or LINUX_HEADERS_OVERRIDE_SRCDIR be
useful for that?

I'm thinking that William has read the LINUX_OVERRIDE_SRCDIR example in
some slides or documentation, without realizing that it's actually
<pkg>_OVERRIDE_SRCDIR and that therefore if the intent is to make some
modifications to Busybox, BUSYBOX_OVERRIDE_SRCDIR should be used.

Also, note that both linux-headers and uclibc became real packages
*after* the 2013.05 release. So if anyone is using 2013.05 or earlier,
those aren't packages, and the override source directory feature cannot
be used.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com