构建库libtorrent debian并将其链接到程序c++

Question

在建立和连接图书馆时，我总是遇到一些问题，所以我希望有人能帮我一把。

我从这里下载了libtorrent，构建它就像他们在building with autotools部分解释这里一样(跳过步骤1)。我认为构建过程是成功的，但是当我完成make check时，输出是：

============================================================================
Testsuite summary for libtorrent-rasterbar 1.0.5
============================================================================
# TOTAL: 0
# PASS:  0
# SKIP:  0
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0
============================================================================

也许它应该说:总X？

我做了一个小程序，其中我添加了#include <libtorrent/session.hpp>，当我用g++ file.cpp -o file编译时，它说是libtorrent/session.hpp: No such file or directory。

我是否应该在g++中添加一些标志，比如其他项目的-lpthread，然后这样想呢？

谢谢

更新:在不使用sudo apt-get install libtorrent-rasterbar-dev进行安装和编译文件的情况下，我得到了以下错误：

g++ main.cpp -o file
In file included from /usr/include/libtorrent/session.hpp:49:0,
                 from main.cpp:2:
/usr/include/libtorrent/config.hpp:46:2: error: #error you must define either BOOST_ASIO_SEPARATE_COMPILATION or BOOST_ASIO_DYN_LINK in your project in order for asio's declarations to be correct. If you're linking dynamically against libtorrent, define BOOST_ASIO_DYN_LINK otherwise BOOST_ASIO_SEPARATE_COMPILATION. You can also use pkg-config or boost build, to automatically apply these defines
#error you must define either BOOST_ASIO_SEPARATE_COMPILATION or BOOST_ASIO_DYN_LINK in your project in \

更新2:

修改main.cpp文件以添加上面的libtorrent #include指令：

#ifndef BOOST_ASIO_DYN_LINK
#define BOOST_ASIO_DYN_LINK
#endif

但我有个问题：

$ g++ main.cpp
/tmp/ccM2ItFb.o: In function `main':
main.cpp:(.text+0x57): undefined reference to  `libtorrent::default_storage_constructor(libtorrent::file_storage const&, libtorrent::file_storage const*, std::string const&, libtorrent::file_pool&, std::vector<unsigned char, std::allocator<unsigned char> > const&)'
main.cpp:(.text+0xb9): undefined reference to `libtorrent::session::~session()'
main.cpp:(.text+0x105): undefined reference to `libtorrent::session::~session()'
/tmp/ccM2ItFb.o: In function `__static_initialization_and_destruction_0(int, int)':
main.cpp:(.text+0x162): undefined reference to `boost::system::generic_category()'
main.cpp:(.text+0x16e): undefined reference to `boost::system::generic_category()'
main.cpp:(.text+0x17a): undefined reference to `boost::system::system_category()'
main.cpp:(.text+0x192): undefined reference to `boost::asio::error::get_netdb_category()'
main.cpp:(.text+0x19e): undefined reference to `boost::asio::error::get_addrinfo_category()'
main.cpp:(.text+0x1aa): undefined reference to `boost::asio::error::get_misc_category()'
/tmp/ccM2ItFb.o: In function `boost::asio::error::get_system_category()':
main.cpp (.text._ZN5boost4asio5error19get_system_categoryEv[_ZN5boost4asio5error19get_system_categoryEv]+0x5): undefined reference to `boost::system::system_category()'
/tmp/ccM2ItFb.o: In function `libtorrent::session::session(libtorrent::fingerprint const&, int, unsigned int)':
main.cpp:(.text._ZN10libtorrent7sessionC2ERKNS_11fingerprintEij[_ZN10libtorrent7sessionC5ERKNS_11fingerprintEij]+0x3c): undefined reference to `libtorrent::rel_clocktime_pools_nolog_resolvecountries_deprecated_dht_ext_()'
main.cpp:(.text._ZN10libtorrent7sessionC2ERKNS_11fingerprintEij[_ZN10libtorrent7sessionC5ERKNS_11fingerprintEij]+0x75): undefined reference to `libtorrent::session::init(std::pair<int, int>, char const*, libtorrent::fingerprint const&, int, unsigned int)'
/tmp/ccM2ItFb.o: In function `void boost::checked_delete<libtorrent::torrent_info const>(libtorrent::torrent_info const*)':
main.cpp:(.text._ZN5boost14checked_deleteIKN10libtorrent12torrent_infoEEEvPT_[_ZN5boost14checked_deleteIKN10libtorrent12torrent_infoEEEvPT_]+0x1a): undefined reference to `libtorrent::torrent_info::~torrent_info()'
collect2: error: ld returned 1 exit status

还尝试使用：g++ -I /usr/include/ -L /usr/local/lib -lboost_system -lpthread -lboost_thread main.cpp编译，结果相同。

更新3:

我解决了这个问题。我必须使用：g++ -I /usr/include/ -L /usr/local/lib -lboost_system -lpthread -lboost_thread main.cpp编译并添加链接库-ltorrent-rasterbar

Answer 1

听起来你已经编译了这个库，但实际上并没有在任何地方安装它。默认情况下，#include指令在/usr/include中查找，但是libtorrent头位于构建库的目录中。您需要将库的文件安装到系统目录中，或者给编译器一个指向libtorrent构建目录的-I选项。(出于同样的原因，链接时可能还需要一个-L选项。)