android -- 编译不同库及编译脚本之区别

我们经常会编译不同库在不同的场合下，而也经常与第三方有合作，对方提供静态库，动态库及配置文件，也有可能需要提供库给对方等等，借此机会将所使用的一些情况作个总结。下面写的android.mk都是一些模板，可能模块可能不需要但加上也无所谓，必要时直接加即可。

1、编译生成动态库

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

# [optional, user, eng]

# eng = required

# optinal = no install on target

LOCAL_MODULE_TAGS := eng

# This is the target being built.

LOCAL_MODULE:= libxxx

# Target install path.

LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)

# All of the source files that we will compile.

LOCAL_SRC_FILES:= \

xxx.c

yyy.cpp

# All of the shared libraries we link against.

LOCAL_SHARED_LIBRARIES := \

libcutils \

libutils \

liblog \

# No static libraries.

LOCAL_STATIC_LIBRARIES := \

# Also need other headers.

LOCAL_C_INCLUDES += \

frameworks/base/include/ \

# No specia compiler flags.

LOCAL_CFLAGS += -D_cplusplus

# Don't prelink this library. For more efficient code, you may want

# to add this library to the prelink map and set this to true.

LOCAL_PRELINK_MODULE := false

include $(BUILD_SHARED_LIBRARY)

2、编译静态库

对上在最后一名：include $(BUILD_SHARED_LIBRARY)

改成：

include $(BUILD_STATIC_LIBRARY)

3、编译生成可执行文件

最后一句修改成

include $(BUILD_EXECUTABLE)

4、编译生成jar包：

LOCAL_PATH := $(call my-dir)

# the library

# ============================================================

include $(CLEAR_VARS)

LOCAL_MODULE:= libandroidtest

LOCAL_MODULE_TAGS := eng

LOCAL_SRC_FILES := \

$(call all-subdir-java-files)

LOCAL_SRC_FILES += \

$(call all-java-files-under, ../gen)

#LOCAL_SRC_FILES += \

android/net/telecast/INetworkServiceManager.aidl \

### 对于aidl文件不加入到framework/base下的android.mk在线无法编译，可以提前生成aidl的java文件放在gen目录下进行编译

include $(BUILD_JAVA_LIBRARY)

5、只需要拷贝某个文件到目录下而不需要使用其中间编译结果

include $(CLEAR_VARS)

LOCAL_MODULE := libandroidtest.xml

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE_CLASS := ETC

# This will install the file in /system/etc/permissions

LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/permissions

LOCAL_SRC_FILES := $(LOCAL_MODULE)

include $(BUILD_PREBUILT)

6、与5条相似，但其它库需要这个中间编译obj，这个对静态库非常重要

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

$(call add-prebuilt-files, STATIC_LIBRARIES, libchfp.a)

或者写成：

LOCAL_PATH:= $(call my-dir)

#include $(CLEAR_VARS)

#LOCAL_MODULE_TAGS := eng

#$(call add-prebuilt-files, STATIC_LIBRARIES, libchfp.a)

include $(CLEAR_VARS)

LOCAL_SRC_FILES := libchfp.a

LOCAL_BUILT_MODULE_STEM := libchfp.a

LOCAL_MODULE_SUFFIX := lib

LOCAL_MODULE := libchfp

LOCAL_MODULE_CLASS := STATIC_LIBRARIES

LOCAL_MODULE_TAGS := optional

include $(BUILD_PREBUILT)

补充：移动开发 , Android ,