package/diffutils: fix build on microblazeel

Fix the following build failure raised since bump to version 3.8 in
commit 1f89c80417ad03127650b22c41ec4e30d42c549f:

sigsegv.c: In function 'sigsegv_handler':
sigsegv.c:979:28: error: 'struct vma_struct' has no member named 'is_near_this'
  979 |                       : vma.is_near_this (addr, &vma))
      |                            ^

Fixes:
 - http://autobuild.buildroot.org/results/5ecd55b7c72f9630a7acc72341ccb60e94ddb574

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/diffutils/0001-m4-stack-direction.m4-fix-build-on-microblazeel.patch

@@ -0,0 +1,39 @@
+From 7fd9de7f12718db0ace575c15c3a0e061ef6c542 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Thu, 11 Nov 2021 09:46:41 +0100
+Subject: [PATCH] m4/stack-direction.m4: fix build on microblazeel
+
+Fix the following build failure on microblazeel with diffutils raised
+since version 3.8 and
+https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=e54aa6196947ed22ff66bcd714e4fc7bd0c5c3b4
+
+sigsegv.c: In function 'sigsegv_handler':
+sigsegv.c:979:28: error: 'struct vma_struct' has no member named 'is_near_this'
+  979 |                       : vma.is_near_this (addr, &vma))
+      |                            ^
+
+Fixes:
+ - http://autobuild.buildroot.org/results/5ecd55b7c72f9630a7acc72341ccb60e94ddb574
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Upstream status: sent to bug-gnulib@gnu.org]
+---
+ m4/stack-direction.m4 | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/m4/stack-direction.m4 b/m4/stack-direction.m4
+index c90d69733..70286c8f5 100644
+--- a/m4/stack-direction.m4
++++ b/m4/stack-direction.m4
+@@ -37,7 +37,7 @@ AC_DEFUN([SV_STACK_DIRECTION],
+       m68* | \
+       m88k | \
+       mcore | \
+-      microblaze | \
++      microblaze* | \
+       mips* | \
+       mmix | \
+       mn10200 | \
+-- 
+2.33.0
+

package/diffutils/diffutils.mk

@@ -10,6 +10,8 @@ DIFFUTILS_SITE = $(BR2_GNU_MIRROR)/diffutils
 DIFFUTILS_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)
 DIFFUTILS_LICENSE = GPL-3.0+
 DIFFUTILS_LICENSE_FILES = COPYING
+# We're patching m4/stack-direction.m4
+DIFFUTILS_AUTORECONF = YES
 
 # Since glibc >= 2.26, don't try to use getopt_long replacement bundled
 # with diffutils. It will conflict with the one from glibc.