我在 Visual Studio 2015 中做了一个简单的项目,以重现我在 Boost 1.60 的更大代码库中遇到的问题
我试图简单地编译并运行此处找到的示例:https ://github.com/boostorg/coroutine2/blob/develop/example/fibonacci.cpp 有 1 个细微的变化 - 使用动态库。
因此,我的完整代码如下:
#include <cstdlib>
#include <iostream>
#define BOOST_ALL_DYN_LINK //This is the only difference
#include <boost/coroutine2/all.hpp>
int main() {
boost::coroutines2::coroutine< int >::pull_type source(
[](boost::coroutines2::coroutine< int >::push_type & sink) {
int first = 1, second = 1;
sink(first);
sink(second);
for (int i = 0; i < 8; ++i) {
int third = first + second;
first = second;
second = third;
sink(third);
}
});
for (auto i : source) {
std::cout << i << " ";
}
std::cout << "\nDone" << std::endl;
return EXIT_SUCCESS;
}
但是,我收到链接器错误:
1>------ Build started: Project: coroutine2-test, Configuration: Debug Win32 ------
1> Source.cpp
1>c:\users\lynden\boost_1_60_0\boost\context\execution_context.ipp(209): warning C4251: 'boost::context::execution_context::ptr_': class 'boost::intrusive_ptr<boost::context::detail::activation_record>' needs to have dll-interface to be used by clients of class 'boost::context::execution_context'
1>Source.obj : error LNK2001: unresolved external symbol "public: static class boost::intrusive_ptr<struct boost::context::detail::activation_record> boost::context::detail::activation_record::current_rec" (?current_rec@activation_record@detail@context@boost@@2V?$intrusive_ptr@Uactivation_record@detail@context@boost@@@4@A)
1>D:\random projects\coroutine2-test\Debug\coroutine2-test.exe : fatal error LNK1120: 1 unresolved externals
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
我当然将包含目录设置为我的 boost 目录,并将我的链接器附加目录设置为 boost/stage/lib 目录。