How do you guys cross compile for Zynq (Cortex A9)?

[Randy Westlund]

On Sun, May 22, 2016 at 02:48:40PM -0400, Emb Aud wrote:
> Hi Everyone,
> 
>   I've got FreeBSD compiled and running on my Zybo (Xilinx Zynq CPU).
> 
>   But I can't figure out how to compile programs to run on it.
> 
>   I've gone round and round with teh gcc-arm-embedded-5.2.20151219_1
> package, and also with the arm-none-eabi-gcc* packages.  Nothing seem to
> work and there is almost no documentation on this.
> 
>   It also looks like the Cortex A9 is armv7-a, but the FreeBSD compile
> instructions I've found (and that work) are for armv6.
> 
>   My first problem was not finding the stdio.h header when I tried to
> compile.  I solved that by switching to the gcc-arm-embedded package.  Now
> when I compile it finds the header but it barfs on libc.a... With errors
> like "undefined reference to `_exit'" and other very basic libc functions.
> 
>   Can anyone tell me how you are compiling your Zynq programs?
> 
>   Thank you.

I haven't used that specific board, but for the Beaglebone Black and
Raspberry Pi, I use poudriere.  My writeup is here:

http://www.textplain.net/tutorials/2015/cross-compiling-freebsd-ports-for-the-beaglebone-black/
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