[PATCH v3 7/9] util/compatfd.c: Only include <sys/syscall.h> if CONFIG_SIGNALFD

[Peter Maydell]

From: David CARLIER <devnexen@gmail.com>

util/compatfd.c includes <sys/syscall.h> so that the CONFIG_SIGNALFD
code can use SYS_signalfd. Guard the #include with CONFIG_SIGNALFD
to avoid portability issues on hosts like Haiku which do not
provide that header file.

Signed-off-by: David Carlier <devnexen@gmail.com>
[PMM: Expanded commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 util/compatfd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/util/compatfd.c b/util/compatfd.c
index c296f55d148..ee47dd80897 100644
--- a/util/compatfd.c
+++ b/util/compatfd.c
@@ -16,7 +16,9 @@
 #include "qemu/osdep.h"
 #include "qemu/thread.h"
 
+#if defined(CONFIG_SIGNALFD)
 #include <sys/syscall.h>
+#endif
 
 struct sigfd_compat_info
 {
-- 
2.20.1