clang ++ (versão 3.3) não possui cabeçalhos

Question

Isso parece estranho. Pegue um programa C ++ simples

#include <cmath>
#include <iostream>

int main(void) {

    std::cout << "Square root of 9 is " << sqrt(9) << std::endl;

}

que passa bem com g++ (4.8), mas não compila com clang++ (3.3).

edd@don:/tmp$ g++ -o cmath cmath.cpp 
edd@don:/tmp$ ./cmath 
Square root of 9 is 3
edd@don:/tmp$ clang++ -o cmath cmath.cpp 
In file included from cmath.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/../../../../include/c++/4.8/cmath:41:10: \
       fatal error: 
      'bits/c++config.h' file not found
#include <bits/c++config.h>
         ^
1 error generated.
edd@don:/tmp$ 

Eu suspeito que estou sentindo falta de algo óbvio.

E eu tenho o pacote -dev relevante:

edd@don:/tmp$ COLUMNS=72 dpkg -l | grep "clang\|llvm"
ii  clang-3.3      1:3.3-5ubunt i386         C, C++ and Objective-C compiler (
ii  libclang-commo 1:3.3-5ubunt i386         clang library - Common developmen
ii  libclang-commo 1:3.2repack- i386         clang library - Common developmen
ii  libclang1      1:3.2repack- i386         clang library
ii  libclang1-3.3  1:3.3-5ubunt i386         clang library
ii  libllvm3.1:i38 3.1-2ubuntu2 i386         Low-Level Virtual Machine (LLVM),
ii  libllvm3.2:i38 1:3.2repack- i386         Low-Level Virtual Machine (LLVM),
ii  libllvm3.3:i38 1:3.3-5ubunt i386         Low-Level Virtual Machine (LLVM),
ii  llvm-3.3       1:3.3-5ubunt i386         Low-Level Virtual Machine (LLVM)
ii  llvm-3.3-dev   1:3.3-5ubunt i386         Low-Level Virtual Machine (LLVM),
ii  llvm-3.3-runti 1:3.3-5ubunt i386         Low-Level Virtual Machine (LLVM),
edd@don:/tmp$ 

Edit: Eu não tinha checado o Bug Tracking System, isso está em de fato conhecido no Launchpad .

Editar 2: No Ubuntu 16.10, finalmente funciona:

edd@max:~/src/progs/C++(master)$ clang++ -o cmath cmath.cpp 
edd@max:~/src/progs/C++(master)$ ./cmath 
Square root of 9 is 3
edd@max:~/src/progs/C++(master)$ 

usando clang++ versão 3.8.1.

    

Answer 1

(finalmente) funciona no Ubuntu 16.10:

edd@max:~/src/progs/C++(master)$ cat cmath.cpp 

#include <cmath>
#include <iostream>

int main(void) {

    std::cout << "Square root of 9 is " << sqrt(9) << std::endl;

}
edd@max:~/src/progs/C++(master)$ clang++ -o cmath cmath.cpp 
edd@max:~/src/progs/C++(master)$ ./cmath 
Square root of 9 is 3
edd@max:~/src/progs/C++(master)$