在Cygwin上编译Boost asio会发生很多错误

Question

I train official Boost asio example( timer.cpp ) on cygwin. And I want to compile it without creating any .lib or .dll and minimize dependencies for distributing by open-source. But when I copy only asio and config directories and asio.hpp and config.hpp files into libs directory(According the official manual, Boost asio requires only Boost config. Refer to Boost asio dependencies ), and compile the example with g++ timer.cpp -Ilibs -o timer , An error that there's no boost/version.hpp occurs.

And I copy the omitted header and compile it... Similar error occurs again. And copy... occurs... copy... occurs... It's no end. So I copy all Boost libraries into libs , and compile it. But I confused many and many errors and warnings occurs. Despite I declare #define __USE_W32_SOCKETS and #define _WIN32_WINNT 0x0603 (I'm working on Windows 8.1) before #include <boost/asio.hpp> . Following is final compile outputs. I'm getting tired.

In file included from /usr/include/w32api/winsock2.h:56:0,
                 from libs/boost/asio/detail/socket_types.hpp:38,
                 from libs/boost/asio/detail/impl/winsock_init.ipp:22,
                 from libs/boost/asio/detail/winsock_init.hpp:125,
                 from libs/boost/asio/io_service.hpp:28,
                 from libs/boost/asio/basic_io_object.hpp:19,
                 from libs/boost/asio/basic_socket.hpp:20,
                 from libs/boost/asio/basic_datagram_socket.hpp:20,
                 from libs/boost/asio.hpp:21,
                 from src/main.cpp:4:
/usr/include/w32api/psdk_inc/_fd_types.h:100:2: warning: #warning "fd_set and     associated macros have been defined in sys/types.      This can cause runtime     problems with W32 sockets" [-Wcpp]
 #warning "fd_set and associated macros have been defined in sys/types.  \
  ^
In file included from libs/boost/asio/detail/impl/posix_tss_ptr.ipp:24:0,
                 from libs/boost/asio/detail/posix_tss_ptr.hpp:76,
                 from libs/boost/asio/detail/tss_ptr.hpp:27,
                 from libs/boost/asio/detail/call_stack.hpp:20,
                 from libs/boost/asio/impl/handler_alloc_hook.ipp:19,
                 from libs/boost/asio/handler_alloc_hook.hpp:80,
                 from libs/boost/asio/detail/handler_alloc_helpers.hpp:21,
                 from libs/boost/asio/detail/bind_handler.hpp:19,
                 from libs/boost/asio/detail/wrapped_handler.hpp:18,
                 from libs/boost/asio/io_service.hpp:24,
                 from libs/boost/asio/basic_io_object.hpp:19,
                 from libs/boost/asio/basic_socket.hpp:20,
                 from libs/boost/asio/basic_datagram_socket.hpp:20,
                 from libs/boost/asio.hpp:21,
                 from src/main.cpp:4:
libs/boost/asio/error.hpp:87:31: error: a function call cannot appear in     a constant-expression
           BOOST_ASIO_NATIVE_ERROR(ERROR_BROKEN_PIPE),

Summary:

Q1. Boost asio requires some other Boost libraries not only Boost config, but not all (I guess). How to check library dependencies of Boost asio?

Q2. On cygwin, Compiling timer example of Boost asio with g++ occurs many and many errors and warnings. But I'm according to official manual. How can I fix it?

Thanks.

Answer 1

According to the Boost Getting Started guide, Boost.Timer must be built, and users fecthing your code will need to install boost as well (your code or project mustn't worry about how boost is installed, juste indicate that it is needed).

You can use the static version to reduce external dependencies. I've never done it with Cygwin but with MinGW, it should be equivalent.

Go into boost root directory, open a cmd.exe.

Your bin/ folder containing the compiler executables must be in your path. If it is not, type this first:

SET PATH=%PATH%;<path to your cygwin bin folder here>

Now type:

bootstrap gcc

Then, when bootstrap has finished:

b2 toolset=gcc variant=debug,release link=static threading=multi