Hi all,

Recently i switched from IAR to GNU environment, so a kind of new world opened up to me. There is one last issue i cannot clear, although i do not seem to be the only one having this very same issue.

When compiling, following errors acure:

c:/programme/yagarto/bin/../lib/gcc/arm-none-eabi/4.6.0/../../../../arm-none-eabi/lib\libg.a(lib_a-writer.o): In function `_write_r':
C:\msys\1.0\home\yagarto\newlib-build\arm-none-eabi\newlib\libc\reent/../../../../../newlib-1.19.0/newlib/libc/reent/writer.c:58: undefined reference to `_write'
c:/programme/yagarto/bin/../lib/gcc/arm-none-eabi/4.6.0/../../../../arm-none-eabi/lib\libg.a(lib_a-closer.o): In function `_close_r':
C:\msys\1.0\home\yagarto\newlib-build\arm-none-eabi\newlib\libc\reent/../../../../../newlib-1.19.0/newlib/libc/reent/closer.c:53: undefined reference to `_close'
c:/programme/yagarto/bin/../lib/gcc/arm-none-eabi/4.6.0/../../../../arm-none-eabi/lib\libg.a(lib_a-lseekr.o): In function `_lseek_r':
C:\msys\1.0\home\yagarto\newlib-build\arm-none-eabi\newlib\libc\reent/../../../../../newlib-1.19.0/newlib/libc/reent/lseekr.c:58: undefined reference to `_lseek'
c:/programme/yagarto/bin/../lib/gcc/arm-none-eabi/4.6.0/../../../../arm-none-eabi/lib\libg.a(lib_a-readr.o): In function `_read_r':
C:\msys\1.0\home\yagarto\newlib-build\arm-none-eabi\newlib\libc\reent/../../../../../newlib-1.19.0/newlib/libc/reent/readr.c:58: undefined reference to `_read'
c:/programme/yagarto/bin/../lib/gcc/arm-none-eabi/4.6.0/../../../../arm-none-eabi/lib\libg.a(lib_a-sbrkr.o): In function `_sbrk_r':
C:\msys\1.0\home\yagarto\newlib-build\arm-none-eabi\newlib\libc\reent/../../../../../newlib-1.19.0/newlib/libc/reent/sbrkr.c:60: undefined reference to `_sbrk'

Seems to me that there are some library problems, but a lot of googling did not get me any further on this.

I attached the makefile, maybe this helps. I am new to writing/editing my own makefile, so there could be an error there.

Can somebody give me a hint on what to do in order to compile?

Thanks in advance!

Hello -

I believe that these library functions are stubs and require implementation in your code.

See libc manual (have a look at "System Calls" chapter)
ftp://sources.redhat.com/pub/newlib/libc.pdf

Here is a link to the Lib source code:
ftp://sources.redhat.com/pub/newlib/new ... 9.0.tar.gz

Regards,

Hi, you can check the software packages for both sam3s and sam3n. They are provided with the syscalls needed by the newlib and with the according linker scripts.