diff --git a/meta-arm/recipes-devtools/gator-daemon/gator-daemon/0001-daemon-mxml-Define-_GNU_SOURCE.patch b/meta-arm/recipes-devtools/gator-daemon/gator-daemon/0001-daemon-mxml-Define-_GNU_SOURCE.patch
new file mode 100644
index 00000000..d2460434
--- /dev/null
+++ b/meta-arm/recipes-devtools/gator-daemon/gator-daemon/0001-daemon-mxml-Define-_GNU_SOURCE.patch
@@ -0,0 +1,31 @@
+From 04e2e924c3ab8da41343277746804dbcd7bf520d Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 13 Aug 2022 16:49:52 -0700
+Subject: [PATCH] daemon/mxml: Define _GNU_SOURCE
+
+This file uses vasprintf() which is defined only with _GNU_SOURCE
+feature macro is on.
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ daemon/mxml/mxml-string.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/daemon/mxml/mxml-string.c b/daemon/mxml/mxml-string.c
+index 678aeb9..c9cd153 100644
+--- a/daemon/mxml/mxml-string.c
++++ b/daemon/mxml/mxml-string.c
+@@ -13,6 +13,8 @@
+  * Include necessary headers...
+  */
+ 
++#define _GNU_SOURCE
++
+ #include "config.h"
+ 
+ 
+-- 
+2.37.2
+
diff --git a/meta-arm/recipes-devtools/gator-daemon/gator-daemon_7.7.0.bb b/meta-arm/recipes-devtools/gator-daemon/gator-daemon_7.7.0.bb
index 492d321d..07b8abbf 100644
--- a/meta-arm/recipes-devtools/gator-daemon/gator-daemon_7.7.0.bb
+++ b/meta-arm/recipes-devtools/gator-daemon/gator-daemon_7.7.0.bb
@@ -18,6 +18,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263 \
 SRCREV = "9d8d75fa08352470c51abc23fe3b314879bd8b78"
 SRC_URI = "git://github.com/ARM-software/gator.git;protocol=http;branch=main;protocol=https \
            file://0001-Sources.mk-Remove-xml-PmuXMLParser.h-header-from-GAT.patch;striplevel=2 \
+           file://0001-daemon-mxml-Define-_GNU_SOURCE.patch;striplevel=2 \
           "
 
 S = "${WORKDIR}/git/daemon"