Dear Monks,

I have two C++ library files that do the same thing in 32bit and 64bit. Libconf.so for 32 bit executable file and libconf64.so for 64 bit executable file. I tried to load the library file dynamically by using of 'DynaLoader' module.

While I tried the load the libconf64.so file to perl 5.8.8 64bit in linux RedHat 64 bit machine. It ran successfully and able to call some function in the libconf64.so file. I tried the same script in to load the libconf.so file to perl 5.8.8 32bit in linux RedHat 32bit machine. It able load the libconf.so file, but while I call some function in the library file, it gives the 'Segmentation fault' error. Below i place the sample code what i tried the 64 bit macine and 32bit machine. Please suggest me how to rectify the error.

Sample code

use DynaLoader;

# declare the library functions
@exconfig_syms = ('XS_ExConfig_fnGetLocalIPAddresses');

# declare the library files
$ExConfigLibFile='libconf.so';

# load the library file
$exconfig_libref = load_shared_lib($ExConfigLibFile);

unless (import_shared_lib_syms($exconfig_libref, \@exconfig_syms)) {
    print ("\n*** ERROR: failed to import symbols from library '$ExCon
+figLibFile'!");
    exit;
}

{
    my @locals = split(/\|/, hostIP());
    print ("Local address". ((@locals > 1) ? "es" : '').":\n\t" . join
+ ("\n\t", @locals));
}



sub load_shared_lib {
    my $lib_file = shift; 
    my $lib_ref = undef;

    $lib_ref = DynaLoader::dl_load_file($lib_file,1);
     return $lib_ref;
}

sub import_shared_lib_syms {
    my $lib_ref = shift;
    my $lib_syms = shift;

    # Load functions from shared library
    foreach my $key (@{$lib_syms}) {#Load function from shared library
    my $sym_ref = DynaLoader::dl_find_symbol($lib_ref, $key);
    unless ($sym_ref) {
        print("\nCan't load symbol '$key' from shared library $lib_fil
+e:\n\t". DynaLoader::dl_error());
            return 0;
    }
    # Install XSub function
    (my $func = $key) =~ s/XS_//;
    my $func_ref = DynaLoader::dl_install_xsub($func, $sym_ref);
    unless ($func_ref) {
        print("\nUnable to install '$key' function from shared library
+ $lib_file:\n\t". DynaLoader::dl_error());
            return 0;
    }
    }
    return 1; # $lib_ref;
}
sub hostIP {
    my $IPs;
    # the below functon return the value in 64bit perl
    # and it returns the 'Segmentation fault' error in 32bit perl
    ExConfig_fnGetLocalIPAddresses($IPs);
    return $IPs;
}
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