diff --git a/debian/rules b/debian/rules
index c7bc68be..0fd35b24 100755
--- a/debian/rules
+++ b/debian/rules
@@ -177,6 +177,9 @@ ifneq (,$(findstring $(DEB_HOST_ARCH),armel))
 # https://wiki.debian.org/ArmEabiPort
   CFLAGS_EXTRA += -march=armv5t
   CXXFLAGS_EXTRA += -march=armv5t
+# disable compiler-rt builtins (not supported for baseline armel arch: armv5t)
+# See http://lists.llvm.org/pipermail/llvm-dev/2016-May/099761.html
+  STAGE_ALL_CMAKE_EXTRA += -DCOMPILER_RT_BUILD_BUILTINS=OFF
   COMPILER_RT_USE_BUILTINS_LIBRARY := OFF
   LIBCXX_USE_COMPILER_RT := OFF
 # disable scudo standalone (not supported for baseline armel arch: armv5t)