Comments on: How-To: Build libtorrent DLL for Windows in C++

By: softz

softz — Wed, 28 Mar 2012 13:38:04 +0000

Great to know you’ve got it running

By: tim

tim — Wed, 28 Mar 2012 12:23:54 +0000

I find it, sorry. I run it from cmd and it works..
Thanks for the support

By: tim

tim — Wed, 28 Mar 2012 09:47:46 +0000

Thanks, it works finally.
I also build the simple_client project.. but when i try to run it, it
says :
‘simple_client.exe’: Loaded ‘C:\libtorrent\Build\bin\Debug\simple_client.exe’, Symbols loaded.
‘simple_client.exe’: Loaded ‘C:\Windows\SysWOW64\ntdll.dll’, Symbols loaded (source information stripped).
‘simple_client.exe’: Loaded ‘C:\Windows\SysWOW64\kernel32.dll’, Symbols loaded (source information stripped).
‘simple_client.exe’: Loaded ‘C:\Windows\SysWOW64\KernelBase.dll’, Symbols loaded (source information stripped).
‘simple_client.exe’: Loaded ‘C:\libtorrent\Build\bin\Debug\libtorrent.dll’, Symbols loaded.
‘simple_client.exe’: Loaded ‘C:\Windows\SysWOW64\ws2_32.dll’, Symbols loaded (source information stripped).
The program ‘[4124] simple_client.exe: Native’ has exited with code 1 (0×1).

By: softz

softz — Wed, 28 Mar 2012 03:00:32 +0000

I see… You’re getting this error because you’re using boost_1_49_0 instead of the one I listed boost_1_40_0.

Ok, if you want to use boost_1_49_0, you need to remove BOOST_NO_EXCEPTIONS from the Preprocessor Definition.

Also, you need to add BOOST_FILESYSTEM_VERSION=2 to the Preprocessor Definition in all the sample client projects in the solution.

These should solve your issues. Also, all the projects use UNICODE.

I’ll try to update this page to use the latest Boost when time permits.

By: tim

tim — Tue, 27 Mar 2012 16:06:01 +0000

I tried to compline your solution, it runs forn about 2 minutes but then tells build failed..

c:\libtorrent\libtorrent-rasterbar-0.15.8\include\libtorrent\entry.hpp(81): warning C4275: non dll-interface class ‘std::runtime_error’ used as base for dll-interface struct ‘libtorrent::type_error’
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\stdexcept(158) : see declaration of ‘std::runtime_error’
1> c:\libtorrent\libtorrent-rasterbar-0.15.8\include\libtorrent\entry.hpp(80) : see declaration of ‘libtorrent::type_error’
1>c:\libtorrent\boost_1_49_0\boost\exception\detail\exception_ptr.hpp(17): fatal error C1189: #error : This header requires exception handling to be enabled.
1> Generating Code…
1>
1>Build FAILED.
1>
1>Time Elapsed 00:02:00.64
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

By: softz

softz — Tue, 27 Mar 2012 15:33:22 +0000

You can refer to the client code to understand how to use libtorrent. You can also run the simple_client.exe with a torrent file as an argument and see the torrent library in action.

You can download my solution and project files listed above. It will build the library and sample clients showing how the libtorrent is used. It’s a VS2008 solution and it pretty straight forward.

Do let me know if you encounter any issues.

By: tim

tim — Tue, 27 Mar 2012 15:17:40 +0000

Thanks for answer, is there any other way to use libtorrent? If you send me .lib and .dll file it will works?

By: softz

softz — Tue, 27 Mar 2012 15:14:41 +0000

Try “Clean Solution” to delete all the object files.
If problem still persists, you can try closing VS and delete the build folder manually.

By: tim

tim — Tue, 27 Mar 2012 10:08:10 +0000

ok ,thanks for answer. It works but i have now another problem. I build my project with VS2008 and it starts compile the files but finally it show me an error
(c:\libtorrent\libtorrent-rasterbar-0.15.8\src\ut_pex.cpp : error C2471: cannot update program database ‘c:\libtorrent\build\obj\debug\libtorrent\vc90.pdb’
c:\libtorrent\libtorrent-rasterbar-0.15.8\src\ut_pex.cpp : fatal error C1083: Cannot open program database file: ‘c:\libtorrent\build\obj\debug\libtorrent\vc90.pdb’: No such file or directory),
i went into debug\libtorrent folder and i saw that vc90.pdb exists. What is going wrong?

By: softz

softz — Tue, 27 Mar 2012 01:51:10 +0000

Hi Tim, my bad… I realized that I’ve missed out a step. Just updated it. You need not create an empty .cpp, you’d need to add the libtorrent source files to your project and set the properties. You can refer to the updated steps. Thanks for alerting.