Build: Add support for Android.

Android.mk

@@ -0,0 +1,37 @@
+# Copyright (C) 2022 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+TOP_PATH := $(call my-dir)
+
+ifeq ($(filter $(modules-get-list),hev-task-system),)
+    include $(TOP_PATH)/third-part/hev-task-system/Android.mk
+endif
+
+LOCAL_PATH = $(TOP_PATH)
+SRCDIR := $(LOCAL_PATH)/src
+
+include $(CLEAR_VARS)
+include $(LOCAL_PATH)/build.mk
+LOCAL_MODULE    := natmap
+LOCAL_SRC_FILES := $(patsubst $(SRCDIR)/%,src/%,$(SRCFILES))
+LOCAL_C_INCLUDES := \
+	$(LOCAL_PATH)/third-part/hev-task-system/include \
+	$(LOCAL_PATH)/third-part/hev-task-system/src/lib/rbtree
+LOCAL_CFLAGS += $(VERSION_CFLAGS)
+ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
+LOCAL_CFLAGS += -mfpu=neon
+endif
+LOCAL_STATIC_LIBRARIES := hev-task-system
+include $(BUILD_EXECUTABLE)

Application.mk

@@ -0,0 +1,20 @@
+# Copyright (C) 2022 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+APP_OPTIM := release
+APP_PLATFORM := android-21
+APP_ABI := all
+APP_CFLAGS := -O3
+NDK_TOOLCHAIN_VERSION := clang

README.md

@@ -19,6 +19,12 @@ make ENABLE_STATIC=1
 
 # openwrt
 make CROSS_PREFIX=${openwrt-toolchain}/bin/x86_64-openwrt-linux-
+
+# android
+mkdir natmap
+cd natmap
+git clone --recursive git://github.com/heiher/natmap jni
+ndk-build
 ```
 
 ## How to Use