How to determine the Boost version on a system?

Question

Boost Informational Macros. You need: BOOST_VERSION

Include #include <boost/version.hpp>

std::cout << "Using Boost "     
          << BOOST_VERSION / 100000     << "."  // major version
          << BOOST_VERSION / 100 % 1000 << "."  // minor version
          << BOOST_VERSION % 100                // patch level
          << std::endl;

Possible output: Using Boost 1.75.0

Tested with Boost 1.51.0 to 1.63, 1.71.0, 1.76.0 and 1.77.0:

If you only need to know for your own information, just look in /usr/include/boost/version.hpp (Ubuntu 13.10) and read the information directly

#include <boost/version.hpp>
#include <iostream>
#include <iomanip>

int main()
{
    std::cout << "Boost version: " 
          << BOOST_VERSION / 100000
          << "."
          << BOOST_VERSION / 100 % 1000
          << "."
          << BOOST_VERSION % 100 
          << std::endl;
    return 0;
}

Update: the answer has been fixed.

Depending on how you have installed boost and what OS you are running you could also try the following:

dpkg -s libboost-dev | grep 'Version'

Boost installed on OS X using homebrew has desired version.hpp file in /usr/local/Cellar/boost/<version>/include/boost/version.hpp (note, that the version is already mentioned in path).

I guess the fastest way to determine version on any UNIX-like system will be to search for boost in /usr:

find /usr -name "boost"