Filter out if the struct is not defined either

Author: NelsonVides

erts/configure.ac

@@ -1685,6 +1685,15 @@ AC_CHECK_TYPES([struct ip_mreqn], [], [],
                 #include <netinet/in.h>
                ])
 
+AC_CHECK_TYPES([struct scm_timestamping], [], [],
+               [
+                #define _GNU_SOURCE
+                #include <sys/socket.h>
+                #include <linux/types.h>
+                #include <linux/errqueue.h>
+                #include <linux/net_tstamp.h>
+               ])
+
 
 dnl ----------------------------------------------------------------------
 dnl  Check the availability of systemd

erts/emulator/nifs/common/prim_socket_nif.c

@@ -11177,7 +11177,7 @@ static BOOLEAN_T esock_cmsg_decode_timespec(ErlNifEnv *env,
 }
 #endif
 
-#ifdef SCM_TIMESTAMPING
+#if defined(SCM_TIMESTAMPING) && defined(HAVE_STRUCT_SCM_TIMESTAMPING)
 static
 BOOLEAN_T esock_cmsg_encode_scm_timestamping(ErlNifEnv     *env,
                                              unsigned char *data,
@@ -11752,7 +11752,7 @@ static ESockCmsgSpec cmsgLevelSocket[] =
          &esock_atom_timestampns},
 #endif
 
-#if defined(SCM_TIMESTAMPING)
+#if defined(SCM_TIMESTAMPING) && defined(HAVE_STRUCT_SCM_TIMESTAMPING)
         {SCM_TIMESTAMPING,
          &esock_cmsg_encode_scm_timestamping, esock_cmsg_decode_scm_timestamping,
          &esock_atom_timestamping},