Bug#694595: gcc-4.7: Starting with 4.7.2-10 breaks building LLVM/Clang Trunk

[Matthias Klose <doko@debian.org>]

Am 28.11.2012 08:08, schrieb Marc J. Driftmeyer:
> Package: gcc-4.7
> Version: 4.7.2-12
> Severity: normal
> 
> Dear Maintainer,
> 
> Starting with 4.7.2-10 breaks building LLVM/Clang Trunk.
> 
> Building LLVM/Clang whether with a previous trunk build clang or using gcc to build clang now stands broken for the simple fact:
> 
> In file included from /home/mdriftmeyer/DeveloperProjects/LLVMProject/trunk/llvm/projects/compiler-rt/lib/asan/tests/asan_benchmarks_test.cc:15:
> In file included from /home/mdriftmeyer/DeveloperProjects/LLVMProject/trunk/llvm/projects/compiler-rt/lib/asan/tests/asan_test_utils.h:19:
> In file included from /home/mdriftmeyer/DeveloperProjects/LLVMProject/trunk/llvm/projects/compiler-rt/lib/asan/tests/asan_test_config.h:20:
> In file included from /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/vector:60:
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/bits/stl_algobase.h:60:10: fatal error: 
>       'bits/c++config.h' file not found
> #include <bits/c++config.h>
>          ^
> In file included from /home/mdriftmeyer/DeveloperProjects/LLVMProject/trunk/llvm/projects/compiler-rt/lib/asan/tests/asan_test.cc:27:
> 
> 
> This has been going on since 4.7.2-10 was introduced into Experimental. This breakage has occasionally occured since LLVM 2.9 trunk and I'm just making everyone aware that they need to make some updates either to both Debian's end and LLVM's reference end to the mappings where the project needs to look in Debian for the c++config.h file.
> 
> Since c++config.h is managed by gccxml-0.9 perhaps an update to this package can fix it?
> 
> /usr/share/gccxml-0.9/GCC/4.7/bits/c++config.h

nothing to do with gccxml, see #693240 for the background.