On Wed, 2010-08-18 at 13:00 +0200, Gilles Chanteperdrix wrote:
> Krzysztof Błaszkowski wrote:
> > On Wed, 2010-08-18 at 00:59 +0200, Gilles Chanteperdrix wrote:
> >> - I have not really checked your user-space compilation flags, I am
> >> using xeno-config to get the correct ones.
> > xeno-config --skin=native --cflags gives:
> > -I/usr/xenomai/include -D_GNU_SOURCE -D_REENTRANT -Wall -pipe -D__XENO__
> > note that there is no xenomai installed on my r&d server
> > in /usr/xenomai/
> > i build xenomai per kernel and install it in kernel's INSTALL sub-dir
> > (DESTDIR=) as well as kernel's modules and other related stuff for this
> > particular kernel.
> > (otherwise i would go mad soon due to various versions ..)
> xeno-config handles the DESTDIR environment variable (failing to do this
> would be kind of silly, because a lot of people, including the
> maintainers, use Xenomai mostly in cross-compiled environment).
no, it does not.
--xeno-cflags="-I/usr/xenomai/include -D_GNU_SOURCE -D_REENTRANT
-Wall -pipe -D__XENO__"
--xeno-ldflags="-L/usr/xenomai/lib -lxenomai -lpthread "
POSIX support is not available
Usage xeno-config --skin=skinname OPTIONS
while it was built like this:
make DESTDIR=/root/... install
> > xeno-config --skin=native --ldflags gives:
> > -lnative -L/usr/xenomai/lib -lxenomai -lpthread
> > and indeed i missed libpthread but otoh userland without pthread even
> > does not depend directly on pthreads:
> > ldd xeno-shmem-fork
> > linux-gate.so.1 => (0xffffe000)
> > libnative.so.3 => not found
> > libxenomai.so.0 => not found
> > libc.so.6 => /lib/libc.so.6 (0xf7da5000)
> > /lib/ld-linux.so.2 (0xf7f10000)
> > when compiled without pthreads.
> libnative depends on pthread, if ldd had been able to find libnative, it
> would have found the dependency on libpthread.
but there is still a difference in xeno-shmem-fork behavior when linked
with pthread or not from command line.
> >> - your user-space code was missing #include <unistd.h>
> > i added. it changed nothing.
> Ok, with all other changes I assume?
i added them and tried incrementally but final source/makefile have all
> >> - some subtle difference in the glibc
> > hmm, i'd say that is rather out my control. i use by default opensuse
> > for r&d.
> > does this mean that this distro is broken ?
> > (otoh many things are - especially gnome)
> What version of opensuse?
11.1 - 32. i do not crosscompile on x86_64 to x86 because i have
encountered various strange mismatches in the past.
rather i use native clean x86 environment (on e.g. x86_64)
> If several toolchains are available, which one
> are you using?
i use default only. (and i think there is only one)
gcc -v gives:
Using built-in specs.
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib --libexecdir=/usr/lib
--enable-ssp --disable-libssp --with-bugurl=http://bugs.opensuse.org/
--with-pkgversion='SUSE Linux' --disable-libgcj --disable-libmudflap
--with-slibdir=/lib --with-system-zlib --enable-__cxa_atexit
--enable-linux-futex --without-system-libunwind --with-cpu=generic
Thread model: posix
gcc version 4.3.2 [gcc-4_3-branch revision 141291] (SUSE Linux)
> I do not mean to say that the glibc is broken, only that
> xenomai could use it in a way that breaks with the version you are using.
maybe, let's investigate this further.
> >> In any case, without further information, it is hard for me to dig any
> >> further tonight. Regards.
> > i see. want you me to send .config file ? anything else ?
> Run cat /proc/ipipe/version /proc/xenomai/version, uname and "getconf
> GNU_LIBPTHREAD_VERSION" on the target, in order to get sure that you run
> the versions you think you are running. Then please send your .config.
> Please also send a full kernel log, from the boot, up to the bug.
atest:~/xeno-test-254 # cat /proc/xenomai/version
atest:~/xeno-test-254 # getconf
bash: getconf: command not found
atest:~/xeno-test-254 # getconf GNU_LIBPTHREAD_VERSION
atest:~/xeno-test-254 # uname -a
Linux atest 184.108.40.206-xeno254 #1 Tue Aug 17 17:48:32 CEST 2010 i686 i686
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