Question

在构建库并链接它们时，我总是遇到问题，所以我希望有人可以帮我。

我从here下载了libtorrent，我已按照building with autotools部分中的here解释（跳过步骤1）。我认为构建过程是成功的，但当我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
============================================================================

也许应该说：总X？

我做了一个小程序，我添加了#include <libtorrent/session.hpp>，当我使用g++ file.cpp -o file进行编译时，它显示libtorrent/session.hpp: No such file or directory。

我是否应该为g ++添加一些标记，例如-lpthread用于其他项目并且这样想？

由于

更新在没有使用sudo apt-get install libtorrent-rasterbar-dev进行构建的情况下进行安装并编译我的main.cpp文件时出现此错误：

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文件以在libtorrent #include指令上面添加以下内容：

#ifndef BOOST_ASIO_DYN_LINK
#define BOOST_ASIO_DYN_LINK
#endif

但后来我遇到了这个问题：

$ 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进行编译，结果相同。

更新3：

我能够解决问题。我必须编译使用： g++ -I /usr/include/ -L /usr/local/lib -lboost_system -lpthread -lboost_thread main.cpp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libtorrent标头位于构建库的目录中的某个位置。您需要将库文件安装到系统目录中，或者为编译器指定一个指向libtorrent构建目录的-I选项。（出于同样的原因，您在链接时可能还需要-L选项。）

构建库libtorrent debian并将其链接到程序c ++

1 个答案: