clang3 -v -x c++ /dev/null -fsyntax-only

gistfile1.txt

$ clang3 -v -x c++ /dev/null -fsyntax-only
clang version 3.1 (trunk 152121)
Target: i386-pc-linux-gnu
Thread model: posix
 "/home/cosmo/llvm/bin/clang" -cc1 -triple i386-pc-linux-gnu -fsyntax-only -disable-free -main-file-name null -mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases -target-cpu pentium4 -momit-leaf-frame-pointer -v -resource-dir /home/cosmo/llvm/bin/../lib/clang/3.1 -fmodule-cache-path /var/tmp/clang-module-cache -I /opt/intel/composerxe-2011.5.220/mkl/include -I /opt/intel/composerxe-2011.5.220/tbb/include -internal-isystem /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6 -internal-isystem /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6/i686-linux-gnu -internal-isystem /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6/backward -internal-isystem /usr/local/include -internal-isystem /home/cosmo/llvm/bin/../lib/clang/3.1/include -internal-externc-isystem /usr/include/i386-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -fdebug-compilation-dir /home/cosmo -ferror-limit 19 -fmessage-length 80 -mstackrealign -fgnu-runtime -fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-fragile-abi -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -x c++ /dev/null
clang -cc1 version 3.1 based upon LLVM 3.1svn default target i386-pc-linux-gnu
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
 /opt/intel/composerxe-2011.5.220/mkl/include
 /opt/intel/composerxe-2011.5.220/tbb/include
 /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6
 /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6/i686-linux-gnu
 /usr/lib/gcc/i686-linux-gnu/4.6/../../../../include/c++/4.6/backward
 /usr/local/include
 /home/cosmo/llvm/bin/../lib/clang/3.1/include
 /usr/include/i386-linux-gnu
 /usr/include
End of search list.