Add BOOST_COROSIO_DECL to service classes for symbol visibility

The old per-backend service classes had BOOST_COROSIO_DECL which
ensures RTTI typeinfo symbols are exported with correct visibility.
Without it, find_service<>() fails on FreeBSD (clang) because
typeid comparisons across translation units don't match.

Author: mvandeberg

include/boost/corosio/native/detail/epoll/epoll_types.hpp

@@ -21,6 +21,7 @@
    so the concrete layer never pulls in platform headers.
 */
 
+#include <boost/corosio/detail/config.hpp>
 #include <boost/corosio/native/detail/epoll/epoll_traits.hpp>
 #include <boost/corosio/native/detail/epoll/epoll_scheduler.hpp>
 #include <boost/corosio/native/detail/reactor/reactor_backend.hpp>
@@ -170,7 +171,7 @@ class epoll_local_stream_acceptor final
 
 // --- Services ---
 
-class epoll_tcp_service final
+class BOOST_COROSIO_DECL epoll_tcp_service final
     : public reactor_tcp_service_impl<
           epoll_tcp_service, epoll_traits, epoll_tcp_socket>
 {
@@ -181,7 +182,7 @@ class epoll_tcp_service final
         : base_type(ctx) {}
 };
 
-class epoll_local_stream_service final
+class BOOST_COROSIO_DECL epoll_local_stream_service final
     : public reactor_local_stream_service_impl<
           epoll_local_stream_service, epoll_traits,
           epoll_local_stream_socket>
@@ -194,7 +195,7 @@ class epoll_local_stream_service final
         : base_type(ctx) {}
 };
 
-class epoll_udp_service final
+class BOOST_COROSIO_DECL epoll_udp_service final
     : public reactor_udp_service_impl<
           epoll_udp_service, epoll_traits, epoll_udp_socket>
 {
@@ -205,7 +206,7 @@ class epoll_udp_service final
         : base_type(ctx) {}
 };
 
-class epoll_local_datagram_service final
+class BOOST_COROSIO_DECL epoll_local_datagram_service final
     : public reactor_local_dgram_service_impl<
           epoll_local_datagram_service, epoll_traits,
           epoll_local_datagram_socket>
@@ -218,7 +219,7 @@ class epoll_local_datagram_service final
         : base_type(ctx) {}
 };
 
-class epoll_tcp_acceptor_service final
+class BOOST_COROSIO_DECL epoll_tcp_acceptor_service final
     : public reactor_acceptor_service_impl<
           epoll_tcp_acceptor_service, epoll_traits,
           tcp_acceptor_service, epoll_tcp_acceptor,
@@ -233,7 +234,7 @@ class epoll_tcp_acceptor_service final
         : base_type(ctx) {}
 };
 
-class epoll_local_stream_acceptor_service final
+class BOOST_COROSIO_DECL epoll_local_stream_acceptor_service final
     : public reactor_acceptor_service_impl<
           epoll_local_stream_acceptor_service, epoll_traits,
           local_stream_acceptor_service,

include/boost/corosio/native/detail/kqueue/kqueue_types.hpp

@@ -21,6 +21,7 @@
    so the concrete layer never pulls in platform headers.
 */
 
+#include <boost/corosio/detail/config.hpp>
 #include <boost/corosio/native/detail/kqueue/kqueue_traits.hpp>
 #include <boost/corosio/native/detail/kqueue/kqueue_scheduler.hpp>
 #include <boost/corosio/native/detail/reactor/reactor_backend.hpp>
@@ -170,7 +171,7 @@ class kqueue_local_stream_acceptor final
 
 // --- Services ---
 
-class kqueue_tcp_service final
+class BOOST_COROSIO_DECL kqueue_tcp_service final
     : public reactor_tcp_service_impl<
           kqueue_tcp_service, kqueue_traits, kqueue_tcp_socket>
 {
@@ -181,7 +182,7 @@ class kqueue_tcp_service final
         : base_type(ctx) {}
 };
 
-class kqueue_local_stream_service final
+class BOOST_COROSIO_DECL kqueue_local_stream_service final
     : public reactor_local_stream_service_impl<
           kqueue_local_stream_service, kqueue_traits,
           kqueue_local_stream_socket>
@@ -194,7 +195,7 @@ class kqueue_local_stream_service final
         : base_type(ctx) {}
 };
 
-class kqueue_udp_service final
+class BOOST_COROSIO_DECL kqueue_udp_service final
     : public reactor_udp_service_impl<
           kqueue_udp_service, kqueue_traits, kqueue_udp_socket>
 {
@@ -205,7 +206,7 @@ class kqueue_udp_service final
         : base_type(ctx) {}
 };
 
-class kqueue_local_datagram_service final
+class BOOST_COROSIO_DECL kqueue_local_datagram_service final
     : public reactor_local_dgram_service_impl<
           kqueue_local_datagram_service, kqueue_traits,
           kqueue_local_datagram_socket>
@@ -218,7 +219,7 @@ class kqueue_local_datagram_service final
         : base_type(ctx) {}
 };
 
-class kqueue_tcp_acceptor_service final
+class BOOST_COROSIO_DECL kqueue_tcp_acceptor_service final
     : public reactor_acceptor_service_impl<
           kqueue_tcp_acceptor_service, kqueue_traits,
           tcp_acceptor_service, kqueue_tcp_acceptor,
@@ -233,7 +234,7 @@ class kqueue_tcp_acceptor_service final
         : base_type(ctx) {}
 };
 
-class kqueue_local_stream_acceptor_service final
+class BOOST_COROSIO_DECL kqueue_local_stream_acceptor_service final
     : public reactor_acceptor_service_impl<
           kqueue_local_stream_acceptor_service, kqueue_traits,
           local_stream_acceptor_service,

include/boost/corosio/native/detail/select/select_types.hpp

@@ -21,6 +21,7 @@
    so the concrete layer never pulls in platform headers.
 */
 
+#include <boost/corosio/detail/config.hpp>
 #include <boost/corosio/native/detail/select/select_traits.hpp>
 #include <boost/corosio/native/detail/select/select_scheduler.hpp>
 #include <boost/corosio/native/detail/reactor/reactor_backend.hpp>
@@ -170,7 +171,7 @@ class select_local_stream_acceptor final
 
 // --- Services ---
 
-class select_tcp_service final
+class BOOST_COROSIO_DECL select_tcp_service final
     : public reactor_tcp_service_impl<
           select_tcp_service, select_traits, select_tcp_socket>
 {
@@ -181,7 +182,7 @@ class select_tcp_service final
         : base_type(ctx) {}
 };
 
-class select_local_stream_service final
+class BOOST_COROSIO_DECL select_local_stream_service final
     : public reactor_local_stream_service_impl<
           select_local_stream_service, select_traits,
           select_local_stream_socket>
@@ -194,7 +195,7 @@ class select_local_stream_service final
         : base_type(ctx) {}
 };
 
-class select_udp_service final
+class BOOST_COROSIO_DECL select_udp_service final
     : public reactor_udp_service_impl<
           select_udp_service, select_traits, select_udp_socket>
 {
@@ -205,7 +206,7 @@ class select_udp_service final
         : base_type(ctx) {}
 };
 
-class select_local_datagram_service final
+class BOOST_COROSIO_DECL select_local_datagram_service final
     : public reactor_local_dgram_service_impl<
           select_local_datagram_service, select_traits,
           select_local_datagram_socket>
@@ -218,7 +219,7 @@ class select_local_datagram_service final
         : base_type(ctx) {}
 };
 
-class select_tcp_acceptor_service final
+class BOOST_COROSIO_DECL select_tcp_acceptor_service final
     : public reactor_acceptor_service_impl<
           select_tcp_acceptor_service, select_traits,
           tcp_acceptor_service, select_tcp_acceptor,
@@ -233,7 +234,7 @@ class select_tcp_acceptor_service final
         : base_type(ctx) {}
 };
 
-class select_local_stream_acceptor_service final
+class BOOST_COROSIO_DECL select_local_stream_acceptor_service final
     : public reactor_acceptor_service_impl<
           select_local_stream_acceptor_service, select_traits,
           local_stream_acceptor_service,