From: Andrea Autiero S143785 (andrea.autiero_at_studenti.polito.it)
Date: Mon Feb 09 2009 - 00:56:52 PST
all right..
i've compiled blcr with the following options:
sudo ../configure --host=ppc-linux --prefix=/ppc_blcr/builddir/
--with-system-map=/home/andrea/Desktop/programmi_per_tesi/linux-2.6.18/System.map
--with-linux=/home/andrea/Desktop/programmi_per_tesi/linux-2.6.18/
--enable-all-static --enable-static cross_signum=64
cross_stack_direction=-1
make
make install DESTDIR=/ppc_blcr/builddir
then i've compiled my application:
source /home/andrea/Desktop/programmi_per_tesi/eldk/eldk_init 4xx
${CROSS_COMPILE}gcc -o static_2 matrix.c -static -L/ppc/blcr_builddir/lib/
-lcr
after that i've put file in ppc_blcr/builddir and my application in the
filesystem of my virtual ppc on simics
it start and i initalize the library (trying launch cr_checkpoint --help
works!!)
then i launch
./static_2 &
ps
cr_checkpoint pid_of_static_2
and i see on the screen:
blcr: retry request on -CR_ENOSUPPORT
Checkpoint failed: support missing from application
now what can i do??is it possible to make it work??
thank you
andrea autiero
On Thu, 29 Jan 2009 10:57:56 -0800, "Paul H. Hargrove" <PHHargrove_at_lbl_dot_gov>
wrote:
> Andrea,
>
> As Karthik says, you will at least need to configure BLCR
> --enable-static to ensure static libraries are built (by default only
> shared libs are built). However, that alone is not sufficient because
> the "cr_run" utility only operates on dynamically linked executables.
> So, if "my_app" was compiled -static, "cr_run my_app" will not load the
> BLCR support into the application regardless of whether the static
> libraries have been built. For the case of a statically linked
> executable, one needs to link in BLCR support when the application is
> built, rather than at run time via "cr_run". Please see section "4.2
> Making an application checkpointable" in the BLCR Users Guide (in the
> doc/html directory of the BLCR distribution, or online at
> http://mantis.lbl.gov/blcr/doc/html/BLCR_Users_Guide.html ). You
> probably want option #2 in that section, and should read the "Cautionary
> linker notes" at the end of that section. If you still have problems,
> please let us know and we'll try to help.
>
> -Paul
>
> Karthik Gopalakrishnan wrote:
>> Did you configure BLCR with "--enable-static"?
>>
>> On Thu, Jan 29, 2009 at 5:40 AM, Andrea Autiero S143785
>> <[email protected]> wrote:
>>
>>> goodmorning
>>> i'm an italian student trying to run your library in one embedded
system
>>> (by now is just virtual)
>>> i'm simuling one ebony board (ppc-4xx) whith 2.6.18 linux kernel on it
>>> i've cross-compiled the library and it seems to work on the target
>>> system,
>>> but i cant launch any application
>>> linked with the lib
>>> i must compile the executable with gcc -static and i think i need
>>> libcr.a
>>> how i could have it??could you help me?
>>> running cr_run myapp & and then cr_checpoint doesn't work
>>> it says to me "missing support from application"
>>> hope to have one answer and thnak you
>>> Andrea Autiero
>>> Politecnico di Torino
>>>
>>>