Can anybody help me? I am really stuck. I can't understand why C++ was chosen to write the tool like Shiboken. If it was in Python - it was much more easier to troubleshoot the issues like this one. -- anatoly t.
On Thu, Dec 15, 2011 at 1:55 AM, anatoly techtonik <[email protected]>wrote: > On Wed, Dec 14, 2011 at 11:38 PM, Hugo Parente Lima < > [email protected]> wrote: > >> > > You also need to care care of putting all your includes inside a >> "extern >> > > C", >> > > because shiboken generates C++ code. >> > Could you, please, expand this a bit? Do I need to do this in avbin.h >> file, >> > or in generated .cpp/.h files? >> >> When linking C code using a C++ compiler you must tell the C++ compiler >> that >> the function is a C function, not a C++ function, you do this putting the >> function declaration inside a block like: >> >> extern "C" { >> } >> >> Some C libraries already do that in their headers, but if your library >> doesn't >> do that you need to find a way to have all your C includes inside a >> extern "C" >> block. >> > > I've wrapped code inside avbin.h into extern "C" block following the > excellent explanation from > http://www.parashift.com/c++-faq-lite/mixing-c-and-cpp.html but it still > doesn't help. > > The problem is that Shiboken was meant to be used to wrap C++ code, not C, >> so >> the code generator doesn't write the "extern C" before including the >> library >> headers and you need to find a way to do that. Thinking a bit I don't >> know if >> there's a clean way to do that with the current version of Shiboken. >> > > Do you mean that if I execute `shiboken lib/AVbin/include/avbin.h > typesystem.xml` shiboken can not detect if avbin.h is C or C++ header? > > > > > For example, I want to create binding for avbin_get_version() >> function >> > > > available from >> > > > https://github.com/AVbin/AVbin/blob/master/include/avbin.h >> > > > >> > > > I do: >> > > > $ shiboken lib/AVbin/include/avbin.h typesystem.xml >> > > > >> > > > Where typesystem.xml is the following: >> > > > >> > > > <?xml version="1.0"?> >> > > > >> > > > <!-- the name of the module as it will be imported from Python--> >> > > > <typesystem package='AVbin'> >> > > > >> > > > <function signature='int avbin_get_version()' rename='version'/> >> > > > >> > > > </typesystem> >> > > > >> > > > >> > > > First of all it always complains about "No C++ classes found!" >> > > >> > > You can ignore this message. >> > > >> > > > Then I see the message: >> > > > Global function 'int avbin_get_version()' is specified in >> typesystem, >> > > > but not defined. This could potentially lead to compilation errors. >> > > > >> > > > If I modify the <function> with signature='avbin_get_version()' I >> get >> > > > >> > > > another error: >> > > > skipping function '::avbin_get_version', unmatched return type 'int' >> > > >> > > Probably this function wasn't found in your global header, the header >> > > file read by shiboken to find what classes/function can be bound, look >> > > at the log >> > > files generated by the generator. >> > >> > They are empty. 1032 bytes each. >> > Console output: http://pastebin.com/fU7rzmXi >> > Generated files: >> > - out/AVbin/avbin_module_wrapper.cpp - http://pastebin.com/GUkTiksN >> > - out/AVbin/avbin_python.h - http://pastebin.com/KmGDW8xi >> >> No, I meant the log files created by the generator, something like >> mjb_rejected_functions.log, the log must explain why the functions were >> rejected. > > > All logs look the same: http://paste.kde.org/159104/ > I've specified --debug-level=full but it added only one line to console > output that doesn't explain anything: > DEBUG :: Parsed: 'typesystem.xml', 2 new entries > > > I've uploaded the project to: >> > https://bitbucket.org/techtonik/shiboken-avbin >> >
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