[riot-users] RIOT on stm32f4discovery

Oleg Hahm oleg at riot-os.org
Mon Mar 25 14:10:22 CET 2013

Hi Aleksander,

> I downloaded and tried to compile hello-world project for this board, but
> got a bunch of errors. After fixing some path 
could you please tell us, what kind of path fixing was necessary for you? That
would be really interesting.

> i am a bit stuck with
> following errors:
> > /home/mfa/sat/lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/thumb/cortex-m4/libg.a(lib_a-sbrkr.o):
> > In function `_sbrk_r':
> > /home/mfa/Desktop/compiler/summon-arm-toolchain/build/arm-none-eabi/thumb/cortex-m4/newlib/libc/reent/../../../../../../../gcc-linaro-4.7-2013.01/newlib/libc/reent/sbrkr.c:58:
> > undefined reference to `_sbrk'
Seems that some libraries (particularly stm32f4xxstdperi and syscalls) are
> May be there are something wrong with my toolchain, which one do you use to
> build the project for stm32?
> That`s the log i got with modifed makefiles:
> http://pastebin.com/5gjhn87F
> And that`s log from raw sources from git(downloaded and no any modification
> made with them):
> http://pastebin.com/G28j1xtR
Have you run a git-pull on the main RIOT repository before? At a first glance,
it seems to me that the fixes in e6177e811a [1] are missing. (Probably fixing
both of your problems.)


[1] https://github.com/RIOT-OS/RIOT/commit/e6177e811a611200696d75c5f1f4c06fde03117e
panic("Tell me what a watchpoint trap is, and I'll then 
deal with such a beast...");

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