Re: RFC - arm-gcc-embedded Toolchain Support

Hugo Vincent

Hi Anas,

Can you please confirm if you want me to progress this RFC (since it's more
convenient to have the VARIANT set, rather than specifying CROSS_COMPILE
each time)? If so, what if any changes would you like? Should I submit it
to gerrit?


On Mon, Feb 29, 2016 at 2:35 PM, Nashif, Anas <anas.nashif(a)> wrote:


Looks good to me. You can also do that by specifying CROSS_COMPILE at the
command line, for example:

CROSS_COMPILE=arm-none-eabi- make BOARD=qemu_cortex_m3

will build using the installed ARM toolchain on my host. You do not need
to specify the VARIANT.


From: Hugo Vincent <hugo.vincent(a)<mailto:hugo.vincent(a)>>
Date: Monday, 29 February 2016 at 09:18
To: "devel(a)<mailto:devel(a)>"
Subject: [devel] RFC - arm-gcc-embedded Toolchain Support


One of the complications of setting up a Zephyr development environment,
especially on OS X, is having to get and build CrossTool-NG. ARM maintains
an official distro and build of gcc and family for Cortex-M and Cortex-R at, which provides pre-built binaries
for Windows, Linux and Mac OS X.

I created a simple, minimal Makefile.toolchain.gcc-arm-embedded that adds
support for this toolchain to Zephyr, see attached patch. If there is
interest in accepting this, I can add qemu and OpenOCD to this, as well as
update the documentation, as well as generalising/parameterising the paths
etc. Please advise how to proceed.

I tested on the frdm_k64f board, with versions 4.9-2015-q2-update and
5.0-2015-q4-major of the toolchain, and with several of the example
applications, and they all functioned correctly.

(There is also another hunk in the patch that adds .DS_Store to gitignore
-- it's a metadata file generated by the OS X Finder, and can be safely


(Disclaimer: I work at ARM, but this is a personal contribution).

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