<div dir="ltr">I joined the other mailing list (for new people: the discussion started here <a href="http://lists.freedesktop.org/archives/dbus/2008-August/010287.html">http://lists.freedesktop.org/archives/dbus/2008-August/010287.html</a>) I tried to add the macros and to compile with -pthread as you suggest, but I get the same result :( also tried to download dbus-cplusplus but it fail while compiling the example echo-client: echo_client_mt-echo-client.o: In function `main':                                                    echo-client.cpp:(.text+0xa3): undefined reference to `pthread_create'                                echo-client.cpp:(.text+0xc2): undefined reference to `pthread_create'                                echo-client.cpp:(.text+0xe1): undefined reference to `pthread_create'                                echo-client.cpp:(.text+0x128): undefined reference to `pthread_join'                                 echo-client.cpp:(.text+0x13b): undefined reference to `pthread_join'                                 echo-client.cpp:(.text+0x14e): undefined reference to `pthread_join'                                 collect2: ld returned 1 exit status I have installed libpthread of course! so I substitute echo-client.cpp (and echo-server.cpp too) with a "do nothing" int main() {return 0;} and now I can compile dbus-cplusplus successfully. however I get again a segmentation fault running my simple example (compiled both with and without -pthread option), can you reproduce this behavior too? regards, Claudio Contino <div class="gmail_quote"> On Mon, Aug 18, 2008 at 10:16 PM, Andreas Volz <<a href="mailto:lists@brachttal.net">lists@brachttal.net</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Am Mon, 18 Aug 2008 14:45:02 +0200 schrieb Claudio Contino: <div><div></div><div class="Wj3C7c"> > Hello, > > I'm a computer science student and I need an IPC API written in C++ > for a project I'm working at. I thought DBUS was the best choice, but > I have some problems with C++ bindings. > I have written this very very simple piece of code: > > #include <dbus-c++-1/dbus-c++/dbus.h> > > DBus::BusDispatcher dispatcher; > > int main() > { >     DBus::default_dispatcher = &dispatcher; >     DBus::Connection bus = DBus::Connection::SessionBus(); >     return 0; > } > > but I get a segmentation fault on DBus::Connection::SessionBus(); > this is the backtrace stack: > > #0 0xb7edbfb7    std::_List_node_base::hook() > (/usr/lib/libstdc++.so.6:??) #1 0xb7f9d340 > DBus::Dispatcher::queue_connection() (/usr/lib/libdbus-c++-1.so.0:??) > #2 0xb7f99089    DBus::Connection::setup() > (/usr/lib/libdbus-c++-1.so.0:??) #3 0xb7f9a943 > DBus::Connection::Connection() (/usr/lib/libdbus-c++-1.so.0:??) > #4 0xb7f9b1d7    DBus::Connection::SessionBus() > (/usr/lib/libdbus-c++-1.so.0:??) > #5 0x804b2fb    main() > (/home/claudio/Documents/progetti/codeblocks/dbus_prova/main.cpp:8) > > I'm using dbus-c++ compiled today from GIT and dbus daemon 1.2.3 > should I move to another API or I am doing something incorrect? </div></div>I've an ideas what the problem could be. Try to insert this at the start of your app: #define DBUS_HAS_THREADS_INIT_DEFAULT #define DBUS_HAS_RECURSIVE_MUTEX #define HAVE_PTHREAD 1 #define HAVE_PTHREAD_H 1 Then compile your demo application with -pthread option. Alternative try my the unofficial GIT repo here: <a href="http://gitorious.org/projects/dbus-cplusplus" target="_blank">http://gitorious.org/projects/dbus-cplusplus</a> Would be interesting if you get the same crash. I assume it's a problem with pthread runtime dependency. If it works then I'll add some more words about that topic. BTW: You may discuss that topic on the list <<a href="mailto:dbus-cplusplus-devel-owner@lists.sourceforge.net">dbus-cplusplus-devel-owner@lists.sourceforge.net</a>> if you like. Join here: <a href="https://lists.sourceforge.net/lists/listinfo/dbus-cplusplus-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/dbus-cplusplus-devel</a> regards Andreas - _______________________________________________ dbus mailing list <a href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/dbus" target="_blank">http://lists.freedesktop.org/mailman/listinfo/dbus</a> </blockquote></div> </div>