llvm dev - Jan 2013 - [LLVMdev] Failure building llvm/clang from source using binary clang package on Fedora 17

On Fedora 17 I have installed a the binary clang package clang3.0-14. 
When I tried to build the latest llvm/clang from source using this 
binary clang I get essentially two different errors:

1) In file included from 
/home/fceldiener/vcs/llvm/include/llvm/Support/SwapByteOrder.h:20:
/usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/limits:1404:27:
error: use of undeclared identifier
       '__int128'; did you mean '__int128_t'?
     struct numeric_limits<__int128>
                           ^
/usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/limits:1478:36:
error: expected '>'
     struct numeric_limits<unsigned __int128>
                                    ^
/usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/limits:1478:5:
error: cannot combine with previous
       '(error)' declaration specifier
     struct numeric_limits<unsigned __int128>
     ^
/usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/limits:1478:44:
error: expected unqualified-id
     struct numeric_limits<unsigned __int128>
                                            ^
In file included from In file included from 
/home/fceldiener/vcs/llvm/lib/Support/CrashRecoveryContext.cpp:10:
/home/fceldiener/vcs/llvm/lib/Support/DataStream.cpp:In file included 
from 18:

2) In file included from 
/home/fceldiener/vcs/llvm/include/llvm/Support/DataStream.h:/home/fceldiener/vcs/llvm/include/llvm/Support/CrashRecoveryContext.h20:
In file included from 
/usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/string::53:
In file included from 
/usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/bits/basic_string.h:4013:
/usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/ext/atomicity.h:48::
45:In file included from  error: use 
of/usr/bin/../lib/gcc/x86_64-redhat-linux/4.7.2/../../../../include/c++/4.7.2/string
undeclared identifier
       '__ATOMIC_ACQ_REL'
   { return __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); }:

If I build with gcc, there are no problems.

The 3.0-4 distribution of clang says that it was updated for gcc 4.7.2.