grub2/0054-Don-t-attempt-to-backtrace-on-grub_abort-for-grub-em.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Tue, 6 Feb 2018 11:16:28 +0100
Subject: [PATCH] Don't attempt to backtrace on grub_abort() for grub-emu

The emu platform doesn't have a grub_backtrace() implementation, so this
causes a build error. Don't attempt to call this when building grub-emu.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---
 grub-core/kern/misc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/grub-core/kern/misc.c b/grub-core/kern/misc.c
index 465a8e74ea7..b1d399d37d7 100644
--- a/grub-core/kern/misc.c
+++ b/grub-core/kern/misc.c
@@ -1303,7 +1303,7 @@ void __attribute__ ((noreturn))
 grub_abort (void)
 {
 #ifndef GRUB_UTIL
-#if defined(__i386__) || defined(__x86_64__)
+#if (defined(__i386__) || defined(__x86_64__)) && !defined(GRUB_MACHINE_EMU)
   grub_backtrace();
 #endif
 #endif