Fix sim build

NDK does not support sim build.

Change-Id: If3164399d72786c9445cd308376497b8ba76011c
diff --git a/native/Android.mk b/native/Android.mk
index b294469..6bad9d6 100644
--- a/native/Android.mk
+++ b/native/Android.mk
@@ -8,8 +8,13 @@
 	src/dictionary.cpp \
 	src/char_utils.cpp
 
-LOCAL_NDK_VERSION := 4
-LOCAL_SDK_VERSION := 8
+# NDK does not support sim build.
+ifneq ($(TARGET_SIMULATOR),true)
+  LOCAL_NDK_VERSION := 4
+  LOCAL_SDK_VERSION := 8
+else
+  LOCAL_C_INCLUDES += $(JNI_H_INCLUDE)
+endif
 
 LOCAL_MODULE := libjni_latinime