diff --git a/core/clang/arm.mk b/core/clang/arm.mk
index ceb4a5a..f76a182 100644
--- a/core/clang/arm.mk
+++ b/core/clang/arm.mk
@@ -10,6 +10,11 @@
   CLANG_CONFIG_arm_EXTRA_CFLAGS += -mcpu=krait
 endif
 
+ifeq ($(HOST_OS),darwin)
+  # Darwin is really bad at dealing with idiv/sdiv. Don't use krait on Darwin.
+  CLANG_CONFIG_arm_EXTRA_CFLAGS += -mcpu=cortex-a9
+endif
+
 CLANG_CONFIG_arm_EXTRA_CPPFLAGS :=
 
 CLANG_CONFIG_arm_EXTRA_LDFLAGS :=