diff -Nru julia-1.0.1/debian/changelog julia-1.0.1/debian/changelog
--- julia-1.0.1/debian/changelog	2018-10-02 08:35:36.000000000 +0000
+++ julia-1.0.1/debian/changelog	2018-10-15 07:57:30.000000000 +0000
@@ -1,3 +1,11 @@
+julia (1.0.1-0ubuntu2) cosmic; urgency=medium
+
+  [ Mo Zhou ]
+  * Extend JULIA_CPU_TARGET to include optimized targets as well,
+    apart from the generic target. (Closes: #910784)
+
+ -- Graham Inggs <ginggs@ubuntu.com>  Mon, 15 Oct 2018 07:57:30 +0000
+
 julia (1.0.1-0ubuntu1) cosmic; urgency=medium
 
   [ Graham Inggs ]
diff -Nru julia-1.0.1/debian/rules julia-1.0.1/debian/rules
--- julia-1.0.1/debian/rules	2018-10-01 13:04:00.000000000 +0000
+++ julia-1.0.1/debian/rules	2018-10-13 16:31:05.000000000 +0000
@@ -63,11 +63,24 @@
 	LIBLAPACKNAME=liblapack \
 	VERBOSE=1
 
+# Set architecture specific CPU targets. See: #910784
+ifneq (,$(filter $(DEB_HOST_ARCH),amd64 kfreebsd-amd64 x32))
+COMMON_FLAGS += MARCH=x86-64 \
+	JULIA_CPU_TARGET="generic;sandybridge,-xsaveopt,clone_all;haswell,-rdrnd,base(1)"
+else ifneq (,$(filter $(DEB_HOST_ARCH),i386 hurd-i386 kfreebsd-i386))
+COMMON_FLAGS += MARCH=pentium4 \
+	JULIA_CPU_TARGET="pentium4;sandybridge,-xsaveopt,clone_all"
+else ifneq (,$(filter $(DEB_HOST_ARCH),armhf))
+COMMON_FLAGS += JULIA_CPU_TARGET="armv7-a;armv7-a,neon;armv7-a,neon,vfp4"
+else
+COMMON_FLAGS += JULIA_CPU_TARGET="generic"
+endif
+
 # Use libopenlibm on architectures that have it
 ifneq (,$(filter $(DEB_HOST_ARCH),amd64 kfreebsd-amd64 x32))
-COMMON_FLAGS += MARCH=x86-64 USE_SYSTEM_OPENLIBM=1 USE_SYSTEM_LIBM=0
+COMMON_FLAGS += USE_SYSTEM_OPENLIBM=1 USE_SYSTEM_LIBM=0
 else ifneq (,$(filter $(DEB_HOST_ARCH),i386 hurd-i386 kfreebsd-i386))
-COMMON_FLAGS += MARCH=pentium4 USE_SYSTEM_OPENLIBM=1 USE_SYSTEM_LIBM=0
+COMMON_FLAGS += USE_SYSTEM_OPENLIBM=1 USE_SYSTEM_LIBM=0
 else ifneq (,$(filter $(DEB_HOST_ARCH),arm64 armhf mips mips64el mipsel powerpc ppc64 ppc64el))
 COMMON_FLAGS += USE_SYSTEM_OPENLIBM=1 USE_SYSTEM_LIBM=0
 else