Re: run blcr on simics virtutech

From: Andrea Autiero S143785 (
Date: Tue Feb 10 2009 - 01:45:21 PST

  • Next message: Paul H. Hargrove: "Re: run blcr on simics virtutech"
    i've tryed it again but this is the answer:
    andrea@chisone:~/Desktop/materiale_tesi> gcc -o new_static matrix.c -static
    -L/usr/local/lib/ -lcr_run -u cr_run_link_me
    /usr/local/lib//libcr_run.a(libcr_run_la-cr_run.o): In function `cri_init':
    undefined reference to `dlopen'
    undefined reference to `dlsym'
    undefined reference to `dlclose'
    collect2: ld returned 1 exit status
    is a problem of my system??i'm not very skilled on linux..
    thank you
    On Mon, 09 Feb 2009 14:23:34 -0800, "Paul H. Hargrove" <PHHargrove_at_lbl_dot_gov>
    > Andrea,
    >   Please reread the "Cautionary Linker Notes" in the BLCR User's Guide.  
    > I beleive you need a "-u cr_link_me" argument when building your 
    > application "static_2" with libcr.a.  Note also that "-u cr_run_link_me 
    > -lcr_run" may be better than "-u cr_link_me -lcr" because libcr_run.a 
    > contains only the code that the cr_run utility would insert into a 
    > dynamically linked executable, while libcr.a contains additional code 
    > that is unnecessary for this basic usage.
    >   Continue to let us know if you need assistance.
    > -Paul
    > Andrea Autiero S143785 wrote:
    >> all right..
    >> i've compiled blcr with the following options:
    >> sudo ../configure --host=ppc-linux --prefix=/ppc_blcr/builddir/
    >> --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 
    >>> ).  You 
    >>> probably want option #2 in that section, and should read the
    >>> 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
    >>>> <> 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
    >>>>> 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

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