grub2/0105-Disable-non-wordsize-allocations-on-arm.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Thu, 2 Aug 2018 10:56:38 -0400
Subject: [PATCH] Disable non-wordsize allocations on arm

Signed-off-by: Peter Jones <pjones@redhat.com>
---
 configure.ac | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/configure.ac b/configure.ac
index dbf97e703b4..96b96973f26 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1288,6 +1288,26 @@ if test "x$target_cpu" = xarm; then
     done
   ])
 
+  AC_CACHE_CHECK([for options to disable movt and movw relocations],
+		 grub_cv_target_cc_mword_relocations,
+		 [grub_cv_target_cc_mword_relocations=no
+		  for cand in "-mword-relocations" ; do
+		    if test x"$grub_cv_target_cc_mword_relocations" != xno ; then
+		      break
+		    fi
+		    CFLAGS="$TARGET_CFLAGS $cand -Werror"
+		    CPPFLAGS="$TARGET_CPPFLAGS"
+		    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+				      [grub_cv_target_cc_mword_relocations="$cand"],
+				      [])
+		  done
+		 ])
+  if test x"$grub_cv_target_cc_mword_relocations" = xno ; then
+    AC_MSG_ERROR(["your compiler doesn't support disabling movw/movt relocations"])
+  else
+    TARGET_CFLAGS="$TARGET_CFLAGS $grub_cv_target_cc_mword_relocations"
+  fi
+
   if test x"$grub_cv_target_cc_mno_movt" != xno ; then
     # A trick so that clang doesn't see it on link stage
     TARGET_CPPFLAGS="$TARGET_CPPFLAGS $grub_cv_target_cc_mno_movt"