commit 1e9737da4aafb54681203931dfe8f8eea21fcef7
author Richard Henderson <rth@twiddle.net> Tue Oct 23 07:33:00 2012 +1000
committer Aurelien Jarno <aurelien@aurel32.net> Sun Oct 28 14:54:25 2012 +0100
tree b904d37de16955227edb05c43a4449f7a9b49cc3
parent 44b37ace0636cd229e956c5000a1bb6a49e274e7

qemu-timer: Check for usable fields for SIGEV_THREAD_ID

Older glibc (RHEL 5.x, Debian 5.x) does not have the _sigev_un._tid
member in its structure definition, while the accompanying kernel
headers do define SIGEV_THREAD_ID.  We need configure to check for
both before using it.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

qemu-timer.c

diff --git a/qemu-timer.c b/qemu-timer.c
index 908a103..ede84ff 100644
--- a/qemu-timer.c
+++ b/qemu-timer.c
@@ -494,12 +494,12 @@
     memset(&ev, 0, sizeof(ev));
     ev.sigev_value.sival_int = 0;
     ev.sigev_notify = SIGEV_SIGNAL;
-#ifdef SIGEV_THREAD_ID
+#ifdef CONFIG_SIGEV_THREAD_ID
     if (qemu_signalfd_available()) {
         ev.sigev_notify = SIGEV_THREAD_ID;
         ev._sigev_un._tid = qemu_get_thread_id();
     }
-#endif /* SIGEV_THREAD_ID */
+#endif /* CONFIG_SIGEV_THREAD_ID */
     ev.sigev_signo = SIGALRM;
 
     if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) {