boost :: process не работает в Cygwin

Попытка выполнить следующий код в среде Cygwin:

#include <boost/process.hpp>

int main() { }

И получите следующую ошибку:

In file included from /usr/include/boost/process/detail/child_decl.hpp:31:0,
from /usr/include/boost/process/child.hpp:21,
from /usr/include/boost/process/async_system.hpp:22,
from /usr/include/boost/process.hpp:24,
from bp.cpp:2:
/usr/include/boost/process/detail/posix/is_running.hpp:18:1: error: non-constant condition for static assertion
static_assert(!WIFEXITED(still_active), "Internal Error");
^~~~~~~~~~~~~
In file included from /usr/include/cygwin/stdlib.h:13:0,
from /usr/include/stdlib.h:26,
from /usr/lib/gcc/x86_64-pc-cygwin/7.3.0/include/c++/cstdlib:75,
from /usr/lib/gcc/x86_64-pc-cygwin/7.3.0/include/c++/ext/string_conversions.h:41,
from /usr/lib/gcc/x86_64-pc-cygwin/7.3.0/include/c++/bits/basic_string.h:6349,
from /usr/lib/gcc/x86_64-pc-cygwin/7.3.0/include/c++/string:52,
from /usr/lib/gcc/x86_64-pc-cygwin/7.3.0/include/c++/stdexcept:39,
from /usr/lib/gcc/x86_64-pc-cygwin/7.3.0/include/c++/system_error:41,
from /usr/include/boost/process/detail/config.hpp:21,
from /usr/include/boost/process/detail/basic_cmd.hpp:10,
from /usr/include/boost/process/args.hpp:33,
from /usr/include/boost/process.hpp:22,
from bp.cpp:2:
/usr/include/boost/process/detail/posix/is_running.hpp:18:16: error: call to non-constexpr function 'int __wait_status_to_int(int)'
static_assert(!WIFEXITED(still_active), "Internal Error");
^

Не могли бы вы подсказать, как это исправить?

Я использую Boost 1.66.