```
❯ python -c "import xdress.clang.libclang"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: ./xdress/clang/libclang.cpython-33m.so: undefined symbol: _ZN5clang8cxcursor16getDeclCursorUSREPKNS_4DeclERN4llvm15SmallVectorImplIcEE
```

For me with clang 3.4, that is in libclang:
```
$  nm --print-file-name /usr/lib/libclang.a | grep getDeclCursor
/usr/lib/libclang.a:CIndexUSRs.o:0000000000000000 T _ZN5clang8cxcursor16getDeclCursorUSREPKNS_4DeclERN4llvm15SmallVectorImplIcEE
```