OK, I used LD_PRELAOD env. variable to preload the libstdc++.so when
starting the axis2_http_server, like this:
LD_PRELOAD=/usr/lib/libstdc++.so.6 ./axis2_http_server -r ${AXIS2C_HOME} -l 6 &
and now my test runs successfully: the client sends a request, I see
in the axis log tracing of function calls that I added to every
function in my service, and then the client receives a response.
I'm not sure that a solution with LD_PRELOAD is a good one, does any
one have an opinion?
Anyway, in production all this is going to run as a Apache httpd
module, and we already know how to load libstdc++.so into the httpd,
so I'm going now to build the mod_axis and try to run the test again,
now with httpd :)
> But, amazingly I never got, undefined symbol: __gxx_personality_v0.
>
> Instead my server seg_faulted and crashed.
Senaka, after I did something (I don't remember exactly what, I have
done a lot of experimenting this morning) I also stopped getting
undefined __gxx_personality_v0 and the server just started crashing
(SIGSEGV); and when I run gdb on the core file, I also saw the that
the crash was occurring in the AXIS2_SVC_SKELETON_INIT().
But then, after some more experimenting, I added 'extern "C"' to the
functions axis2_get_instance() and axis2_remove_instance() in my test
service, and the test run successfully. Well, at least this is what I
think fixed this crash :).
So, two things so far: a) preload the libstdc++.so, and b) use 'extern
"C"' on the functions that the Axis calls directly (that is, loads by
name?)
Thank you,
alex.
On Wed, Mar 19, 2008 at 10:44 AM, Senaka Fernando <[EMAIL PROTECTED]> wrote:
> Hi Alex,
>
> I tried Axis2/C with a C++ client and it works fine. However, when it
> comes to server side, the message receiver can't invoke the
> AXIS2_SVC_SKELETON_INIT(), probably because it was built in C instead of
> C++. Thus, I guess that you will have to rebuild axis2/C using g++ in the
> first place.
>
> But, amazingly I never got, undefined symbol: __gxx_personality_v0.
>
> Instead my server seg_faulted and crashed.
>
> Will work on this and let you know if I get through.
>
> Regards,
> Senaka
>
>
>
> > I've tried with two versions: first, I downloaded and compiled latest
> > released Axisc/2 v. 1.3.0 from the http://ws.apache.org/axis2/c; after
> > seeing this error, I downloaded a "WSO2 Web Services Framework for
> > C++" from the http://wso2.org/projects/wsf/cpp, where, I hoped, given
> > that the name includes "for C++", the C++ problems would be solved.
> > This release, as I understand, includes Acis2/C version 1.2. The same
> > error (with the same text returned by dlerror(), after I added
> > logging of this) happens in both cases.
>
> >
> >
> > Thank you,
> >
> > alex.
> >
> >
> > On Tue, Mar 18, 2008 at 10:36 PM, Manjula Peiris <[EMAIL PROTECTED]> wrote:
> >> Hi Bolgarov,
> >>
> >> What is the Axis2/C version you are using?
> >>
> >>
> >>
> >>
> >> On Tue, 2008-03-18 at 17:17 -0400, Alex Bolgarov wrote:
> >> > Hi,
> >> >
> >> > I'm trying to write a SOAP service using Axis2/C framework. I need
> >> the
> >> > service to be written in a C++ language, so as a first step I took an
> >> > 'echo service' example from the Axis distribution, renamed it to .cpp
> >> > file and compiled/linked it with 'g++' compiler. No compile errors
> >> > reported, the resulting .so library I copied to the services
> >> > directory, together with the corresponding services.xml file.
> >> >
> >> > I compiled a sample client that tries to send something to my new
> >> service.
> >> >
> >> > Than I strarted an 'axis2_http_server' application and run the
> >> client,
> >> > which failed with a SOAP error message about failure to load a dll.
> >> >
> >> > I found in the Axis2/C source code the place where it loads the .so
> >> > file (axutil_class_loader_load_lib() in file 'class_loader.c'), and
> >> > added debug log message that reports into the log the exact text of
> >> an
> >> > error as it is returned by dlerror() function, not just a message
> >> that
> >> > if failed to load a library, like this (after line 156 of the file
> >> > 'class_loader.c'):
> >> >
> >> > if (!dl_handler)
> >> > {
> >> > AXIS2_LOG_DEBUG(env->log, AXIS2_LOG_SI,
> >> > "AXIS2_PLATFORM_LOADLIB error: [%s]",
> >> > AXIS2_PLATFORM_LOADLIB_ERROR);
> >> >
> >> > ...
> >> > ...
> >> > ...
> >> >
> >> > after recompiling the Axis and running the test again, I see in the
> >> > log following message:
> >> >
> >> > class_loader.c(159) AXIS2_PLATFORM_LOADLIB error:
> >> > [/home/alexb/wsfcpp-repo/services/my_service/libmy_service.so:
> >> > undefined symbol: __gxx_personality_v0]
> >> >
> >> > I understand that the real problem is that the axis2_http_server
> >> > application is not compiled/linked with the g++ support libraries.
> >> > Several years ago I had similar problem when writing a C++ module for
> >> > Apache's httpd server, but there the solution was to use an httpd's
> >> > directive 'LoadFile' to load the g++ runtime library into the httpd
> >> > environment before loading my C++ module with the LoadModule
> >> > directive.
> >> >
> >> > So the question is, does anyone knows how to make the
> >> > axis2_http_server to load the g++ runtime library before it loads a
> >> > C++ .so service library?
> >> >
> >> > For the record, I'm doing all this on the Ubuntu 7.10, and here is a
> >> > result of running 'g++ --version:
> >> >
> >> > $ g++ --version
> >> > g++ (GCC) 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)
> >> >
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> >>
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