apt-cache search boost

sudo apt-get install libboost-all-dev

 #cd /opt/boost_1_47_0
 #sudo ./bootstrap.sh

 #sudo ./bjam

The Boost C++ Libraries were successfully built!
The following directory should be added to compiler include paths:
 /home/terry/Local/boost_1_47_0
The following directory should be added to linker library paths:
 /home/terry/Local/boost_1_47_0/stage/lib

sudo ldconfig

#cat test.cpp 
#include <boost/lexical_cast.hpp>
#include <iostream>

int main()
{
 using boost::lexical_cast;
 int a= lexical_cast<int>("123456");
 double b = lexical_cast<double>("123.456");
 std::cout << a << std::endl;
 std::cout << b << std::endl;
 return 0;
}

--g++ -o test test.cpp
#ls
test test.cpp
# ./test 
123456
123.456