Fix building with clang and c++ headers from gcc-4.9

[azat]

See http://reviews.llvm.org/rL201729

[ogoffart]

Hi, I don't really understand the problem. I have no problem compiling with gcc 4.9 headers. (with clang 3.4.1)

What is the error you are getting?

[azat]

On Fri, Jun 13, 2014 at 05:31:39AM -0700, Olivier Goffart wrote:

Hi, I don't really understand the problem. I have no problem compiling with gcc 4.9 headers. (with clang 3.4.1)

What is the error you are getting?

Hi Olivier,

Here is an example:
Scanning dependencies of target codebrowser_generator
Scanning dependencies of target codebrowser_generator
[ 12%] Building CXX object generator/CMakeFiles/codebrowser_generator.dir/annotator.cpp.o
[ 25%] Building CXX object generator/CMakeFiles/codebrowser_generator.dir/generator.cpp.o
In file included from /src/oss/woboq_codebrowser/generator/generator.cpp:22:
In file included from /src/oss/woboq_codebrowser/generator/generator.h:27:
In file included from /usr/lib/llvm-3.4/include/llvm/ADT/SmallString.h:17:
In file included from /usr/lib/llvm-3.4/include/llvm/ADT/SmallVector.h:17:
In file included from /usr/lib/llvm-3.4/include/llvm/Support/AlignOf.h:19:
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/c++/4.9/cstddef:51:11: error: no member named 'max_align_t' in the global namespace
using ::max_align_t;

$ clang --version
Debian clang version 3.3-16 (branches/release_33) (based on LLVM 3.3)
Target: x86_64-pc-linux-gnu
Thread model: posix
$ g++ --version
g++ (Debian 4.8.3-2) 4.8.3
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

As you can see I have g++ 4.8, while headers from 4.9
(Partially my bad, I must write "with libstdc++ 4.9" not "gcc 4.9")

$ apt-file search 4.9/cstddef
libstdc++-4.9-dev: /usr/include/c++/4.9/cstddef

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#11 (comment)

Respectfully
Azat Khuzhin

[azat]

Seems that github are quote some part of new message, so be aware.

[azat]

I guess that this could be closed.