有没有办法在本机客户端中使用 boost 线程和 asio？

Question

我正在尝试将一些使用 boost 的现有代码移植到本机客户端。

我根据此处的说明编译了 boost：https://code.google.com/p/naclports/wiki/InstallingSDL（使用 boost 而不是 sdl），并尝试将一些 boost 代码注入其中一个示例。

通过编辑examples/api/socket/socket.cc，包括标题并添加一个简单的测试方法，我成功地使用了boost::shared_ptr：

#include <boost/shared_ptr.hpp>

测试方法：

void ExampleInstance::test_shared_ptr() {
  boost::shared_ptr<std::string> test_ptr(new std::string("hi"));
  PostMessage(test_ptr->c_str());
}

从构造函数调用此方法会导致在加载您可以通过运行“make serve”访问的页面时控制台上出现“hi”。

尽管这么多的工作给我留下了深刻的印象，但我的应用程序使用了 boost::thread 和 boost::asio，我遇到了麻烦。在pepper_34中，如果我添加：

#include <boost/threads.hpp>

我得到这些编译错误，只是包含那个文件：

~/nacl_sdk/pepper_34/examples/api/socket$ make
CHROME_PATH is undefined, and google-chrome not found in PATH, nor /usr/bin/google-chrome.
  CXX  newlib/Release/socket_x86_32.o
In file included from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/thread/thread_only.hpp:17,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/thread/thread.hpp:12,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/thread.hpp:13,
                 from socket.cc:25:
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/thread/pthread/thread_data.hpp: In member function 'size_t boost::thread_attributes::get_stack_size() const':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/thread/pthread/thread_data.hpp:63: error: invalid conversion from 'const pthread_attr_t*' to 'pthread_attr_t*'
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/thread/pthread/thread_data.hpp:63: error:   initializing argument 1 of 'int pthread_attr_getstacksize(pthread_attr_t*, size_t*)'
make: *** [newlib/Release/socket_x86_32.o] Error 1

同样，如果我尝试包含任何基本的 asio 元素，例如：

#include <boost/asio/io_service.hpp>

添加#include 行后，我得到了这些编译错误：

~/nacl_sdk/pepper_34/examples/api/socket$ make
CHROME_PATH is undefined, and google-chrome not found in PATH, nor /usr/bin/google-chrome.
  CXX  newlib/Release/socket_x86_32.o
In file included from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/posix_fd_set_adapter.hpp:26,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/fd_set_adapter.hpp:22,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/select_reactor.hpp:27,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/reactor.hpp:29,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/task_io_service.ipp:24,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/task_io_service.hpp:203,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/impl/io_service.hpp:71,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/io_service.hpp:767,
                 from socket.cc:25:
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/socket_types.hpp:283: error: 'IF_NAMESIZE' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/socket_types.hpp:304: error: 'sockaddr_un' does not name a type
In file included from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/socket_ops.hpp:326,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/select_reactor.ipp:30,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/select_reactor.hpp:212,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/reactor.hpp:29,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/task_io_service.ipp:24,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/task_io_service.hpp:203,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/impl/io_service.hpp:71,
                 from /home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/io_service.hpp:767,
                 from socket.cc:25:
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'int boost::asio::detail::socket_ops::close(boost::asio::detail::socket_type, boost::asio::detail::socket_ops::state_type&, bool, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:342: error: 'FIONBIO' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'bool boost::asio::detail::socket_ops::set_user_non_blocking(boost::asio::detail::socket_type, boost::asio::detail::socket_ops::state_type&, bool, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:384: error: 'FIONBIO' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'bool boost::asio::detail::socket_ops::set_internal_non_blocking(boost::asio::detail::socket_type, boost::asio::detail::socket_ops::state_type&, bool, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:437: error: 'FIONBIO' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'bool boost::asio::detail::socket_ops::sockatmark(boost::asio::detail::socket_type, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:617: error: '::sockatmark' has not been declared
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'size_t boost::asio::detail::socket_ops::available(boost::asio::detail::socket_type, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:637: error: 'FIONREAD' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'void boost::asio::detail::socket_ops::init_buf(boost::asio::detail::socket_ops::buf&, void*, size_t)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:687: error: invalid use of incomplete type 'struct iovec'
/home/jholland/nacl_sdk/pepper_34/include/newlib/sys/socket.h:304: error: forward declaration of 'struct iovec'
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:688: error: invalid use of incomplete type 'struct iovec'
/home/jholland/nacl_sdk/pepper_34/include/newlib/sys/socket.h:304: error: forward declaration of 'struct iovec'
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'void boost::asio::detail::socket_ops::init_buf(boost::asio::detail::socket_ops::buf&, const void*, size_t)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:698: error: invalid use of incomplete type 'struct iovec'
/home/jholland/nacl_sdk/pepper_34/include/newlib/sys/socket.h:304: error: forward declaration of 'struct iovec'
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:699: error: invalid use of incomplete type 'struct iovec'
/home/jholland/nacl_sdk/pepper_34/include/newlib/sys/socket.h:304: error: forward declaration of 'struct iovec'
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'int boost::asio::detail::socket_ops::ioctl(boost::asio::detail::socket_type, boost::asio::detail::socket_ops::state_type&, int, boost::asio::detail::ioctl_arg_type*, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:1689: error: 'FIONBIO' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'const char* boost::asio::detail::socket_ops::inet_ntop(int, const void*, char*, size_t, long unsigned int, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:1974: error: 'IF_NAMESIZE' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:1979: error: 'if_name' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:1979: error: 'if_indextoname' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:1981: error: 'if_name' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'int boost::asio::detail::socket_ops::inet_pton(int, const char*, void*, long unsigned int*, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:2209: error: 'if_nametoindex' was not declared in this scope
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp: In function 'int boost::asio::detail::socket_ops::gethostname(char*, int, boost::system::error_code&)':
/home/jholland/nacl_sdk/pepper_34/toolchain/linux_x86_newlib/i686-nacl/usr/include/boost/asio/detail/impl/socket_ops.ipp:2251: error: '::gethostname' has not been declared
make: *** [newlib/Release/socket_x86_32.o] Error 1

（旁注：我不认为顶部的 CHROME_PATH 警告会导致这些错误，因为即使没有我的编辑，我也会收到相同的示例警告，但示例仍然有效。我想这是因为我在没有安装 chrome 的 vm 上构建（或在其中运行它的窗口管理器），因为我必须使用 linux 根据我尝试在 OSX 上构建它时 boost 构建过程给出的错误消息来构建 boost。错误消息表明这会干扰“make run_package”，但否则示例在“make serve”下可以正常运行，并且可以从不同的机器上进行测试，使用 chrome 访问页面。我在等待 chromium-browser 安装时写这个问题，希望我能证实这个理论。）

以防万一，我运行的是 Ubuntu 12.04。

我的问题：

1. 之前有没有人成功使用过 boost::asio 和/或 boost::threads 的辣椒版本？
2. 有没有人遇到过这个问题并找到了解决方法？

Answer 1

尝试构建 glibc 的 boost 而不是 newlib。你可以通过运行来做到这一点：

TOOLCHAIN=glibc make boost

来自 naclports 目录。

newlib build of boost 似乎不支持很多 boost 库：

Component configuration:

- atomic                   : not building
- chrono                   : not building
- context                  : not building
- coroutine                : not building
- date_time                : building
- exception                : not building
- filesystem               : not building
- graph                    : not building
- graph_parallel           : not building
- iostreams                : not building
- locale                   : not building
- log                      : not building
- math                     : not building
- mpi                      : not building
- program_options          : building
- python                   : not building
- random                   : not building
- regex                    : not building
- serialization            : not building
- signals                  : not building
- system                   : not building
- test                     : not building
- thread                   : not building
- timer                    : not building
- wave                     : not building

glibc build 似乎支持更多库：

Component configuration:

- atomic                   : building
- chrono                   : building
- context                  : not building
- coroutine                : not building
- date_time                : building
- exception                : building
- filesystem               : building
- graph                    : building
- graph_parallel           : building
- iostreams                : building
- locale                   : building
- log                      : building
- math                     : building
- mpi                      : not building
- program_options          : building
- python                   : not building
- random                   : building
- regex                    : building
- serialization            : building
- signals                  : not building
- system                   : building
- test                     : building
- thread                   : building
- timer                    : building
- wave                     : building