Build errors with L4

Adam Lackorzynski adam at
Mon Jul 29 00:14:41 CEST 2013

On Sat Jul 27, 2013 at 16:36:24 -0400, Bob Stewart wrote:
> I pulled down revisions 56 of l4re per the l4re download
> instructions on an x86 platform running Ubuntu 13.04. I'm cross
> compiling for an ARM 8 Beaglebone platform. I created a set of tool
> links pointing to gcc, g++, ar, ld, etc. from the current Genode
> toolchain. I then followed the l4 build instructions. The build
> proceeded normally until is started to link in libc static libraries
> at which point the following errors killed the build:
> ...
>   ==> Linking loader
> /home/bob/fiasco/builds/l4/lib/arm_armv7a/l4f/libuc_c.a(__exit_handler.o):
> In function `__new_exitfn':
> /home/bob/fiasco/builds/l4/pkg/uclibc/lib/uclibc/src/libc/stdlib/_atexit.c:259:
> undefined reference to `__emutls_v.__libc_errno'
> Is there some undocumented compiler flag related to TLS I should be
> setting somewhere to fix these library references?

Not that I know of, it should just work. What do you mean with that you
created links to binutils and gcc? When cross-compiling to ARM the tools
should just be prefixed with arm-linux- and gcc/g++ etc. target the

Adam                 adam at

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