How to check libmongoc (mongodb c driver) version?

I'm building mongodb cxx driver (c++11) in CentOS 6.5. Following this page, I have to install libmongoc first. But after I built and make installed the newest libmongoc(version:1.3.5), I still receive fews error while installing mongodb cxx driver such as "Checking for module 'libmongoc-1.0>=1.3.4' ".

So I'm afraid I've not installed libmongoc correctly, and I wanna know how to get the libmongoc version, Thanks.