tools/helpers: fix build of xen-init-dom0 with -Werror

Missing prototype of asprintf() without _GNU_SOURCE.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Henry Wang <Henry.Wang@arm.com>

diff --git a/tools/helpers/xen-init-dom0.c b/tools/helpers/xen-init-dom0.c
index 37eff8868f2545224d8e43430d93fd9235e1e566..764f8378878ebcfdbcd1e11c7a0fb3e391341d65 100644 (file)
--- a/tools/helpers/xen-init-dom0.c
+++ b/tools/helpers/xen-init-dom0.c
@@ -1,3 +1,5 @@
+#define _GNU_SOURCE
+
 #include <stdlib.h>
 #include <stdint.h>
 #include <string.h>