There is no completion with C/C++ standard header files

[shixiazuike]

Sorry for poor English.
My system is Ubuntu-12.04-i386, and YCM is compiled with libclang.so (There is no pre-build clang-3.6.0 for my system so I do it myself). I found completion cannot work with C/C++ standard header files.
With suggestion in #303, call echo | clang -v -E -x c++ - , got

include "..." search starts here:

include <...> search starts here:

/usr/lib/gcc/i686-linux-gnu/4.8/../../../../include/c++/4.8
/usr/lib/gcc/i686-linux-gnu/4.8/../../../../include/i386-linux-gnu/c++/4.8
/usr/lib/gcc/i686-linux-gnu/4.8/../../../../include/c++/4.8/backward
/usr/local/include
/usr/local/bin/../lib/clang/3.6.0/include
/usr/include/i386-linux-gnu

after adding above dirs to global '.ycm_extra_conf.py' prepending '-isystem' but it still cannot work! Only "standart.h" can be found when I typing 'std'.

Using

'-I'
'/usr/include/c++/4.8/tr1'

is same as '-isystem'

[darlingm]

Are you compiling with -stdlib=libc++? If so, call echo | clang -stdlib=libc++ -v -E -x c++ - instead. The top 3 directories listed here are for GCC's stdlibc++, which is likely what you need if you aren't compiling with -stdlib=libc++. Not sure if that is going to fix your issue, but wanted to mention it.

[Valloric]

Please see CONTRIBUTING.md.