You should use a different completion plugin then. YCM is the only one that needs to be compiled. If you use regular vim, check out neocomplete, and if you use neovim, well, you should know about deoplete (it's kickass). Both of these pretty much work out of the box; they have accompanying clang sources (vim-clang or deoplete-clang) that feed the suggestions to neocomplete/deoplete.

Frankly, I would use neovim + deoplete. Modern, async, and a big user community right now (almost everyone with neovim runs deoplete).