Add Android NDK complie supported.

Usage: ./ndk_make.sh [clean]

.gitignore

@@ -1,3 +1,6 @@
 build/
 /tags
 /bazel-*
+
+libs/
+obj/

Android.mk

@@ -0,0 +1,14 @@
+LOCAL_PATH := $(call my-dir)
+# --------------------------------------
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := $(wildcard $(LOCAL_PATH)/src/*.cpp)
+
+LOCAL_C_INCLUDES += src/
+LOCAL_C_INCLUDES += include/
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_MODULE := yamlcpp
+include $(BUILD_SHARED_LIBRARY)
+

Application.mk

@@ -0,0 +1,6 @@
+APP_ABI := arm64-v8a x86_64
+APP_PLATFORM := android-26
+APP_STL := c++_shared
+APP_CPPFLAGS := -fexceptions
+APP_CPPFLAGS += -frtti
+#APP_ALLOW_MISSING_DEPS = true

ndk_make.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+if [ $# -gt 1 ];then
+    echo "[Usage]: $0 or $0 clean."
+    exit
+elif [ $# -eq 0 ];then
+    ndk-build NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=Android.mk NDK_APPLICATION_MK=Application.mk
+elif [ $# -eq 1 ];then
+    if [ "$1" = "clean" ];then
+        ndk-build NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=Android.mk NDK_APPLICATION_MK=Application.mk clean
+        exit
+    else
+        echo "[Usage]: $0 or $0 clean."
+        exit
+    fi
+fi