Description: apparently libc++ from LLVM isn't packaged, it's not part of either llvm or clang and I can't find any separate package for it either.


Additional info:
* package version(s) llvm 6.0.0-4, clang 6.0.0-1

Steps to reproduce:

$ cat test.cpp
#include <cmath>
int main() { return 0; }
$ clang++ -stdlib=libc++ test.cpp
test.cpp:1:10: fatal error: 'cmath' file not found
#include <cmath>
^~~~~~~
1 error generated.