C++ cpp-net lib not found - c++

Question

Here is a piece of code which is an example from cpp-netlib
#include <boost/network/protocol/http/server.hpp>
#include <string>
#include <iostream>
namespace http = boost::network::http;
struct hello_world;
typedef http::server<hello_world> server;
struct hello_world {
void operator() (server::request const &request,
server::response &response) {
std::string ip = source(request);
response = server::response::stock_reply(
server::response::ok, std::string("Hello, ") + ip + "!");
}
};
int
main(int argc, char * argv[]) {
if (argc != 3) {
std::cerr << "Usage: " << argv[0] << " address port" << std::endl;
return 1;
}
try {
hello_world handler;
server server_(argv[1], argv[2], handler);
server_.run();
}
catch (std::exception &e) {
std::cerr << e.what() << std::endl;
return 1;
}
return 0;
}
But on compiling that is g++ main.cpp -o socke.exe -lboost_system I get the following errors
main.cpp:1:50: error: boost/network/protocol/http/server.hpp: No such file or directory
main.cpp:5: error: âboostâ has not been declared
I have installed the cpnet-lib libraries and cmake for build them. I cant get to understand why couldnt the compiler find the libraries.

Answer 1

You didn't specify include path where Boost and cpp-netlib headers are located. The first error line tells which header is missing. Assuming your Boost headers are installed under /a/my_boost (i.e. there is a /a/my_boost/boost subdirectory with headers) and cpp-netlib under /a/my_cpp-netlib, you need to add -I command line options for your compiler:
g++ main.cpp -o socke.exe -I/a/my_boost -I/a/my_cpp-netlib -lboost_system
If you're using a graphical IDE or a build system, there should be an option in the project settings to add include directories.