[vlc-devel] Mingw32 build problems: Dash, Skins2 and libstdc++

[Rafaël Carré]

Hello,

Le 2012-06-26 02:29, Chris Smowton a écrit :
> Hey all,
> 
> Has anyone seen this problem before: when building with the latest 
> mingw64 targeting i686 (because trunk VLC seems to require a very recent 
> mingw64 version), when compiling Skins2 or DASH I get lots of errors like:
> 
> /home/chris/mingw64/install/i686-w64-mingw32/include/c++/4.8.0/istream:609: 
> undefined reference to `construction vtable for 
> std::istream-in-std::basic_stringstream<char, std::char_traits<char>, 
> std::allocator<char> >
> 
> A quick look at the libtool output indicates this is because it's trying 
> to link against 
> /home/chris/mingw64/install/i686-w64-mingw32/lib/../lib/libstdc++.dll.a
> 
> However this file does not export any vtable symbols 
> (i686-w64-mingw32-objdump -C -t 
> /home/chris/mingw64/install/i686-w64-mingw32/lib/../lib/libstdc++.dll.a 
> | grep -i vtable yields nothing)
> 
> By comparison, both 
> /home/chris/mingw64/install/i686-w64-mingw32/lib/libstdc++-6.dll and 
> libstdc++.a do export vtable symbols, including an exact match for the 
> symbol required.
> 
> I guess now I have to figure out how the hell libtool works,

Yep, libtool is hell.

> and how to 
> hack it to statically link just libstdc++, but perhaps someone has 
> encountered and solved the same problem?

Try to build gcc with --disable-shared