$ cmake -G "Ninja" -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang
-DCMAKE_BUILD_TYPE=Release -DLLVM_USE_LINKER=gold CMAKE_INSTALL_PREFIX=/usr/local ../llvm-6.0.1.src/

$ clang++ -v hello.cpp -o hello
clang version 6.0.1 (tags/RELEASE_601/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
Found candidate GCC installation: /usr/lib64/gcc/x86_64-suse-linux/4.8
Selected GCC installation: /usr/lib64/gcc/x86_64-suse-linux/4.8
Candidate multilib: .;@m64
Selected multilib: .;@m64
 "/usr/local/bin/clang-6.0" -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name hello.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -v -resource-dir /usr/local/lib/clang/6.0.1 -internal-isystem /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../include/c++/4.8 -internal-isystem /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../include/c++/4.8/x86_64-suse-linux -internal-isystem /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../include/c++/4.8/backward -internal-isystem /usr/local/include -internal-isystem /usr/local/lib/clang/6.0.1/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -fdebug-compilation-dir /home/darnisee/prac_cpp -ferror-limit 19 -fmessage-length 146 -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/hello-fb0ff3.o -x c++ hello.cpp
clang -cc1 version 6.0.1 based upon LLVM 6.0.1 default target x86_64-unknown-linux-gnu
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../include/c++/4.8
 /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../include/c++/4.8/x86_64-suse-linux
 /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../include/c++/4.8/backward
 /usr/local/include
 /usr/local/lib/clang/6.0.1/include
 /usr/include
End of search list.
 "/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld" -z relro --hash-style=gnu --hash-style=both --enable-new-dtags --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o hello /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../lib64/crt1.o /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../lib64/crti.o /usr/lib64/gcc/x86_64-suse-linux/4.8/crtbegin.o -L/usr/lib64/gcc/x86_64-suse-linux/4.8 -L/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../lib64 -L/usr/local/bin/../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/lib -L/usr/lib64/gcc/x86_64-suse-linux/4.8/../../.. -L/usr/local/bin/../lib -L/lib -L/usr/lib /tmp/hello-fb0ff3.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib64/gcc/x86_64-suse-linux/4.8/crtend.o /usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../lib64/crtn.o