is_trivially_copyable/constructible etc support of clang++ and g++ - gcc

Question

iso 20.9.4.3 Type Properties [meta.unary.prop] are not fully supported by g++'s libstdc++-v3 ; e.g.:
wget -O - https://gcc.gnu.org/svn/gcc/trunk/libstdc++-v3/include/std/type_traits 2>/dev/null | grep "still unimplemented"
// is_trivially_copyable (still unimplemented)
/// is_trivially_constructible (still unimplemented)
/// is_trivially_default_constructible (still unimplemented)
/// is_trivially_copy_constructible (still unimplemented)
/// is_trivially_move_constructible (still unimplemented)
/// is_trivially_assignable (still unimplemented)
/// is_trivially_copy_assignable (still unimplemented)
/// is_trivially_move_assignable (still unimplemented
and thus, at least as far as I understand it, clang builds based on gcc installations will inherit this lack of implementation; at least the
clang version 3.5.0 (212792)
I built just some hours ago with
g++ (Debian 4.8.3-3) 4.8.3
(but which somehow uses gcc-4.9 includes nevertheless) does not support those type traits mentioned.
But somehow Coliru
http://coliru.stacked-crooked.com/
has a clang installation, which, if invoked with
clang++ -std=c++11 -stdlib=libc++ -O2 -Wall -Wextra -pedantic -pthread -pedantic-errors main.cpp -lm -lsupc++ && ./a.out
compiles e.g. this
http://en.cppreference.com/w/cpp/types/is_constructible
example without complaints.
So there must be method to compile or setup clang, at least on Linux with headers which support also those type traits yet unimplemented by libstdc++.
In addition, llvm has this
http://libcxx.llvm.org/type_traits_design.html
summary compiled, but I have no clue how to use those "__" intrinsics; they apparently do neither live in std:: nor ::;
--
So - how to setup or configure recent llvm/clang on Linux so that clang++ has the most of those set of type traits available?
Addendum in respose to a comment
clang++ -std=c++11 -stdlib=libc++ -O2 -Wall -Wextra -pedantic -pthread -pedantic-errors test_type_traits.cxx -lm -lsupc++
test_type_traits.cxx:1:10:
fatal error: 'iostream' file not found
#include
^
1 error generated.

Answer 1

One simply has to install libc++ completely
Here it is
http://libcxx.llvm.org/
That built and installed like a charm and now clang indeed has those type traits when invoked like
clang++ -std=c++11 -stdlib=libc++ <other arguments>