[Buildroot] [PATCH 1/1] package/xen: fix build with -DNDEBUG

[Fabrice Fontaine]

Fix build failure with -DNDEBUG raised since commit
5a8c50fe05afacc3cbe8e7347e238da9f242fab0

Fixes:
 - http://autobuild.buildroot.org/results/66573ad0abc4244c0dfeac8b684a7bfcc31c0d4d

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 .../xen/0002-xen-Makefile-drop-Werror.patch   | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 package/xen/0002-xen-Makefile-drop-Werror.patch

diff --git a/package/xen/0002-xen-Makefile-drop-Werror.patch b/package/xen/0002-xen-Makefile-drop-Werror.patch
new file mode 100644
index 0000000000..f3f13dae8f
--- /dev/null
+++ b/package/xen/0002-xen-Makefile-drop-Werror.patch
@@ -0,0 +1,38 @@
+From e87870cf2645a4dafeea6afce290c6e6574c37ea Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice at gmail.com>
+Date: Fri, 2 Jul 2021 19:00:30 +0200
+Subject: [PATCH] xen/Makefile: drop -Werror
+
+Drop -Werror to avoid the following build failure with -DNDEBUG:
+
+In file included from <command-line>:0:0:
+/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-0/output-1/build/xen-4.14.2/xen/include/xen/config.h:94:0: error: "NDEBUG" redefined [-Werror]
+ #define NDEBUG
+
+<command-line>:0:0: note: this is the location of the previous definition
+
+Fixes:
+ - http://autobuild.buildroot.org/results/66573ad0abc4244c0dfeac8b684a7bfcc31c0d4d
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
+[Upstream status: sent to xen-devel at lists.xenproject.org]
+---
+ xen/Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/xen/Makefile b/xen/Makefile
+index 89879fad4c..cf9f83b1fb 100644
+--- a/xen/Makefile
++++ b/xen/Makefile
+@@ -210,7 +210,7 @@ CFLAGS += -fomit-frame-pointer
+ endif
+ 
+ CFLAGS += -nostdinc -fno-builtin -fno-common
+-CFLAGS += -Werror -Wredundant-decls -Wno-pointer-arith
++CFLAGS += -Wredundant-decls -Wno-pointer-arith
+ $(call cc-option-add,CFLAGS,CC,-Wvla)
+ CFLAGS += -pipe -D__XEN__ -include $(BASEDIR)/include/xen/config.h
+ CFLAGS-$(CONFIG_DEBUG_INFO) += -g
+-- 
+2.30.2
+
-- 
2.30.2