Build errors with L4

[Matthias Lange]

On 29.07.2013, at 14:05, Bob Stewart <robjsstewart at verizon.net> wrote:

> Let me more precise now that I'm on the machine I was trying to build on.
> 
> Following the directions on the L4 Runtime Environment page, I completed steps 1, 2 and 3. On step 4, configuring the build tree, I selected my target architecture and platform and left the Building options as they were. This make failed with the error "no suitable compiler found". This message appeared to come from the script .arm-linux-SCRIPT which looks in various places for an arm gcc compiler. No seeing  instructions on tools to be installed, I decided to create a directory of links to the tools from Genode which I had previously installed. That directory of links was added to PATH. So, for example, the link to arm-linux-gcc points to /usr/local/genode-gcc/bin/genode-arm-gcc. Step 4 now completed and the make in step ran until the error with the static library references occurred.
> 
> What is the corrected set of tools to be using for this?

Mentor Graphic's CodeBench Lite Edition [1] is known to work. Just extract the archive to /usr/local/gcc and adapt the path in the .arm-linux-SCRIPT accordingly.

Best,
Matthias.

[1] http://www.mentor.com/embedded-software/sourcery-tools/sourcery-codebench/editions/lite-edition/request?id=478dff82-62bc-44b2-afe2-4684d83b19b9&downloadlite=scblite2012&fmpath=/embedded-software/sourcery-tools/sourcery-codebench/editions/lite-edition/form

> 
> Thank you
> Bob Stewart
> 
> 
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> 
> On July 29, 2013 6:37:46 AM Bob Stewart <robjsstewart at verizon.net> wrote:
>> Because I was using the genode toolchain whose tools don't have the arm-linux- prefix, I created a directory of links which have that prefix (e.g. arm-linux-gcc) which link to the appropriate tool in the genode tools directory (/usr/local/genode).
>> 
>> Bob Stewart
>> 
>> 
>> On July 28, 2013 6:14:41 PM Adam Lackorzynski <adam at os.inf.tu-dresden.de> wrote:
>> > 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
>> > host.
>> >
>> >
>> > Adam
>> > -- Adam                 adam at os.inf.tu-dresden.de
>> >   Lackorzynski         http://os.inf.tu-dresden.de/~adam/
>> >
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