我正在尝试编译在使用Ubuntu 18.04和Windows 10编译时没有问题的程序。但是，当我尝试在OSX High Sierra上编译时，出现错误，它们仅与boost相关。
这是一个例子：
#include <boost/process.hpp>
#include <iostream>
int main()
{
std::cout << "This is a test." << std::endl;
}
然后我试图与这两个编译程序g++和clang这样的：
g++ -std=c++11 test.cpp -lpthread
然后，我得到了这个巨大的错误：
In file included from test.cpp:1:
In file included from /usr/local/include/boost/process.hpp:24:
In file included from /usr/local/include/boost/process/async_system.hpp:22:
In file included from /usr/local/include/boost/process/child.hpp:21:
In file included from /usr/local/include/boost/process/detail/child_decl.hpp:30:
/usr/local/include/boost/process/detail/posix/wait_for_exit.hpp:60:7: error: expected unqualified-id
::sigemptyset(&sigset);
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/signal.h:125:26: note: expanded from macro 'sigemptyset'
#define sigemptyset(set) (*(set) = 0, 0)
^
In file included from test.cpp:1:
In file included from /usr/local/include/boost/process.hpp:24:
In file included from /usr/local/include/boost/process/async_system.hpp:22:
In file included from /usr/local/include/boost/process/child.hpp:21:
In file included from /usr/local/include/boost/process/detail/child_decl.hpp:30:
/usr/local/include/boost/process/detail/posix/wait_for_exit.hpp:61:7: error: expected unqualified-id
::sigaddset(&sigset, SIGCHLD);
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/signal.h:122:31: note: expanded from macro 'sigaddset'
#define sigaddset(set, signo) (*(set) |= __sigbits(signo), 0)
^
In file included from test.cpp:1:
In file included from /usr/local/include/boost/process.hpp:24:
In file included from /usr/local/include/boost/process/async_system.hpp:22:
In file included from /usr/local/include/boost/process/child.hpp:21:
In file included from /usr/local/include/boost/process/detail/child_decl.hpp:30:
/usr/local/include/boost/process/detail/posix/wait_for_exit.hpp:87:26: error: no member named 'sigtimedwait' in the global namespace
auto ret_sig = ::sigtimedwait(&sigset, nullptr, &ts);
~~^
In file included from test.cpp:1:
In file included from /usr/local/include/boost/process.hpp:25:
In file included from /usr/local/include/boost/process/group.hpp:32:
/usr/local/include/boost/process/detail/posix/wait_group.hpp:64:7: error: expected unqualified-id
::sigemptyset(&sigset);
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/signal.h:125:26: note: expanded from macro 'sigemptyset'
#define sigemptyset(set) (*(set) = 0, 0)
^
In file included from test.cpp:1:
In file included from /usr/local/include/boost/process.hpp:25:
In file included from /usr/local/include/boost/process/group.hpp:32:
/usr/local/include/boost/process/detail/posix/wait_group.hpp:65:7: error: expected unqualified-id
::sigaddset(&sigset, SIGCHLD);
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/signal.h:122:31: note: expanded from macro 'sigaddset'
#define sigaddset(set, signo) (*(set) |= __sigbits(signo), 0)
^
In file included from test.cpp:1:
In file included from /usr/local/include/boost/process.hpp:25:
In file included from /usr/local/include/boost/process/group.hpp:32:
/usr/local/include/boost/process/detail/posix/wait_group.hpp:90:17: error: no member named 'sigtimedwait' in the global namespace
ret = ::sigtimedwait(&sigset, nullptr, &ts);
~~^
6 errors generated.
我可能尝试过丢失编译器标志，-lboost_system但是给出了相同的确切错误。如果该特定的库与OSX不兼容，那么我将尝试查找解决方法，但是该库已经嵌入在我当前使用的代码中。
是否有任何已知的修复程序？
你是对的。自 1.69.0 起，Boost.Process 在 MacOS 上已损坏。有关详细信息，请点击错误报告的链接。
错误报告中给出了一个解决方法，可以使其在 MacOS 上编译：
事实证明，MacOS 并不是定义 , 的唯一平台
sigemptyset。sigaddset这是一个简单的修复，因为您所需要做的就是删除限定符::。至于sigtimedwait，这在所有平台上也并不常见。奇怪的是，::从该限定符中剥离限定符即可编译代码。我猜测模板永远不会被实例化，因此该方法不退出的事实不会给我们带来问题。我可以提供一个补丁，但它只不过是
::从这 3 个标识符中剥离出来。
Flint 项目中包含一个全面的补丁。请注意，如果您选择在代码中包含 Flint 的补丁，则 Flint 已获得 MIT 许可