[omniORB] omniORBpy and visual studio 7

[Luke Deller]

Jan Olderdissen wrote:
> We decided to build a new C++/CORBA project in vs7. I had to compile
> omniORB-4.0.3 against vs7 because the runtime DLL has incompatible memory
> allocators. While it was somewhat tricky to figure out the build process,
> the result seems to work fine.
> 
> The system will be used from a Python client. Running the binary
> distribution of _omnipy.pyd against the omniORB403_rt.dll compiled for vs7
> failed, so I decided to compile omniORBpy-2.3 against vs7 as well. Sadly,
> the result is flaky. Every once in a while the most basic invocations crash
> with "The instruction at '0x77fcda2f' referenced memory at '0x0000002c'. The
> memory could not be 'read'."
> 
> The debugger points to a problem when freeing memory in msvcr71.dll.
> 
> I checked that both the servant and the python client use the same
> omniORB403_rt.dll and omnithread30_rt.dll. 
> 
> The only potential problem that comes to mind is that python23.dll is _not_
> compiled against vs7.

Yes, you will need to rebuild Python 2.3.x using the newer version of 
visual c++.  I got this to work using Visual Studio .NET 2003 (vc7.1). 
I installed the regular Python binary package into C:\Python23, then 
built Python from source using vc7.1, then copied all the binaries 
(*.dll *.pyd *.lib) from the source build into the relevant subfolder of 
C:\Python23

Happily, I believe that the upcoming binary releases of Python 2.4 will 
be compiled with vc7.x so you should be able to use these without 
recompiling Python.

Regards,
Luke.