The NULL pointer segfault you got there is related to using the gtk and
there for X11 version of wx.  See
https://code.ros.org/trac/ros-pkg/ticket/4788#comment:8:

I haven't investigated this thoroughly but I think it's because Ogre is
> expecting an NSView or an OgreView but gets something GTK/X11 related.
> According to the wxWidgets documentation Cocoa is not well supported yet so
> I didn't go further down this path.


He ends up building it i386 and native carbon to make things work, which is
the point at which we went +no_x11 -carbon +cocoa on macports and all i386
in ROS.

https://github.com/wjwwood/ros-osx/wiki

Hope that helps,

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
William Woodall
Graduate Software Engineering
Auburn University
w@auburn.edu
wjwwood@gmail.com
williamjwoodall.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



On Sat, Aug 6, 2011 at 2:27 PM, Mark Moll <mmoll@rice.edu> wrote:

> I followed the instructions to install electric turtle (
> http://www.ros.org/wiki/electric/Installation/OSX) on OS X 10.7. It turns
> out that wxWidgets/wxPython wasn’t really a problem, because the MacPorts
> version defaults to using gtk rather than Carbon. I also tried the 2.9
> development version of wxPython and compile everything with the Cocoa
> backend rather than Carbon or gtk, but that seemed very unstable: many of
> the wxPython sample programs crashed.
>
> I compiled all ports as 64-bit. Below are some more detailed notes. In the
> end rviz compiles, but crashes when I try to run it. I see the start-up
> window and then it dies with this trace:
>
>        [ INFO] [1312658033.261777000]: Loading general config from
> [/Users/mmoll/.rviz/config]
>        [ INFO] [1312658033.261972000]: Loading display config from
> [/Users/mmoll/.rviz/display_config]
>        Reading symbols for shared libraries . done
>        Reading symbols for shared libraries . done
>
>        Program received signal EXC_BAD_ACCESS, Could not access memory.
>        Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
>        0x000000010249e7a7 in Ogre::RenderSystem::attachRenderTarget ()
>
> Maybe there is still something wrong in the way Ogre is
> built/installed/linked?
>
>
>
> * Installed Cg framework from NVIDIA in /Library/Frameworks, used
> install_name_tool to set rpath to /Library/Frameworks/Cg.framework
>
>
> * MacPorts
>
>  Applied patch to gtk2 port: https://trac.macports.org/ticket/30281
>  Added ports for ogre and tinyxml. The ogre port does *not* include libOIS,
> which depends on Carbon.
>  Fixed collada-dom port
>  Removed assimp, eigen3, collada-dom from manifest files and installed
> corresponding ports.
>
>
> * ROS
>  rosconsole:  used g++-4.2 rather than c++ (= llvm-g++-4.2) to avoid
> internal compiler error
>
>  urdf, urdf_parser, rviz:
>  add "add_definitions(-DTIXML_USE_STL)" to CMakeLists.txt
>
>  rviz:
> --- src/rviz/visualizer_app.cpp (revision 37704)
> +++ src/rviz/visualizer_app.cpp (working copy)
> @@ -292,7 +292,7 @@
>       // Wait for any signals
>       sigfillset(&signal_set);
>
> -#if defined(__WXMAC__)
> +#if 1 //defined(__WXMAC__)
>       int sig;
>       sigwait(&signal_set, &sig);
>  #else
>
>
> added this to .bash_profile:
> export
> DYLD_FALLBACK_FRAMEWORK_PATH=$DYLD_FALLBACK_FRAMEWORK_PATH:/opt/local/Library/Frameworks
>
>
> --
> Mark Moll
>
>
>
> _______________________________________________
> ros-users mailing list
> ros-users@code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>