春山眉黛~第一次寫.mk文件的學習筆記

.o、.a、.so文件都是Linux下的程序函數庫，【即編譯好的可以供其他程序使用的代碼和數據】。
優點：程序模塊化，容易重新編譯，方便升級。

分類:
.o文件
動態加載函數庫（對應.o文件，一個.c或.cpp文件對應一個.o文件  相當於Windows裏的.obj文件)

.a文件靜態函數庫（對應.a文件 好多個.o合在一起,用於靜態連接 多個.a可以鏈接生成一個out可執行文件 對應windows的exe可執行文件）

.so共享函數庫（對應.so文件，類似於Windows的dll文件）


---------------------------1.c↓------------------------------
#include <stdio.h>
#include<limits.h>
void main(){
printf("\n%d", sizeof(int));
printf("\n%d", sizeof(short));
printf("\n%d", sizeof(double));

signed  short num = SHRT_MAX;
unsigned short  numm = USHRT_MAX;
printf("%d,%d", sizeof(signed short), sizeof(unsigned short));
printf("\n%d,%d", num, numm);

unsigned short x = 65535 + 1 + 1;
printf("%d", x);
printf("\n..............", x);
}
-----------------------------1.c↑-------------------------


---------------------------Android.mk↓---------------------------
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_SRC_FILES += 1.c
LOCAL_MODULE := zzjtestA
include $(BUILD_HOST_STATIC_LIBRARY)
-----------------------------Android.mk↑---------------------------
BUILD_HOST_STATIC_LIBRARY
BUILD_HOST_SHARED_LIBRARY
BUILD_STATIC_LIBRARY
BUILD_SHARED_LIBRARY
BUILD_EXECUTABLE
BUILD_HOST_EXECUTABLE
BUILD_PACKAGE
BUILD_PREBUILT
BUILD_MULTI_PREBUILT
BUILD_HOST_PREBUILT
BUILD_JAVA_LIBRARY
BUILD_STATIC_JAVA_LIBRARY
BUILD_HOST_JAVA_LIBRARY

通過把  include $(XXXX)  改爲不同選項

// 編譯Linux平臺的靜態庫  因爲是在PC上編譯安卓系統通過交叉編譯  所以能生成Linux電腦可運行的動態靜態庫(不能在手機端運行)
1.include $(BUILD_HOST_STATIC_LIBRARY)
   host StaticLib: zzjtestA_32 (out/host/linux-x86/obj32/STATIC_LIBRARIES/zzjtestA_intermediates/zzjtestA.a)

2.include $(BUILD_HOST_SHARED_LIBRARY)
   host SharedLib: zzjtestA_32 (out/host/linux-x86/obj32/lib/zzjtestA.so)

3.include $(BUILD_STATIC_LIBRARY)
   target StaticLib: zzjtestA_32 (out/target/product/hq6737t_66_1ha_m0/obj_arm/STATIC_LIBRARIES/zzjtestA_intermediates/zzjtestA.a)

4.include $(BUILD_SHARED_LIBRARY)
   target Symbolic: zzjtestA_32 (out/target/product/hq6737t_66_1ha_m0/symbols/system/lib/zzjtestA.so)

5.include $(BUILD_EXECUTABLE)  //手機可執行文件
   target Symbolic: zzjtestA (out/target/product/hq6737t_66_1ha_m0/symbols/system/bin/zzjtestA)

6.include $(BUILD_HOST_EXECUTABLE)  //PC Linux可執行文件
host Executable: zzjtestA (out/host/linux-x86/obj/EXECUTABLES/zzjtestA_intermediates/zzjtestA)
Install: out/host/linux-x86/bin/zzjtestA


BUILD_PACKAGE
BUILD_PREBUILT
BUILD_MULTI_PREBUILT
BUILD_HOST_PREBUILT
BUILD_JAVA_LIBRARY
BUILD_STATIC_JAVA_LIBRARY
BUILD_HOST_JAVA_LIBRARY
// 這七個選項 1.c 文件編譯報錯  需要其他 java文件或者 其他文件  待續........

BUILD_PACKAGE  用於生成APK文件
在packages\apps中的所有APP 都是通過 include $(BUILD_PACKAGE) 生成 .apk 文件
include $(CLEAR_VARS)
LOCAL_MODULE_TAGS := optional
LOCAL_SRC_FILES := $(call all-java-files-under, src)
LOCAL_PACKAGE_NAME := Gallery
include $(BUILD_PACKAGE)



BUILD_PREBUILT 用於生成預編譯文件 配置文件  /system/etc下的 爲後續文件提供支持?
LOCAL_MODULE := tzdata-host
include $(BUILD_PREBUILT)