diff -Nru emacs25-25.1+1/debian/changelog emacs25-25.1+1/debian/changelog
--- emacs25-25.1+1/debian/changelog	2017-03-02 16:43:06.000000000 +0000
+++ emacs25-25.1+1/debian/changelog	2017-03-28 22:58:12.000000000 +0000
@@ -1,3 +1,10 @@
+emacs25 (25.1+1-3ubuntu4) zesty; urgency=medium
+
+  * debian/rules: Add -O0 to CFLAGS on arm64 to prevent FTBFS due to
+    segfaults. (LP: #1656474)
+
+ -- Barry Warsaw <barry@ubuntu.com>  Tue, 28 Mar 2017 18:58:12 -0400
+
 emacs25 (25.1+1-3ubuntu3) zesty; urgency=medium
 
   * debian/control.in:
diff -Nru emacs25-25.1+1/debian/rules emacs25-25.1+1/debian/rules
--- emacs25-25.1+1/debian/rules	2017-03-02 16:43:06.000000000 +0000
+++ emacs25-25.1+1/debian/rules	2017-03-28 22:58:12.000000000 +0000
@@ -115,6 +115,7 @@
 
 ifeq ($(DEB_HOST_ARCH),arm64)
   joblimit := 1
+  CFLAGS += -O0
 endif
 
 target := $(DEB_HOST_GNU_TYPE)