
# For more information about using CMake with Android Studio, read the
# documentation: https://d.android.com/studio/projects/add-native-code.html

# Sets the minimum version of CMake required to build the native library.

cmake_minimum_required(VERSION 3.22.1)

# Declares and names the project.

project("cpp_native")

#定义一个全局变量包含了所有要编译的C文件
file(GLOB BZIP bzip/*.c)
message("----------start------")
message("${BZIP}")
message("${CMAKE_CURRENT_SOURCE_DIR}")
message("----------end------")
#导入头文件
include_directories(bzip/)
include_directories(logcat/)
# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds them for you.
# Gradle automatically packages shared libraries with your APK.

add_library( # Sets the name of the library.
        cpp_native

        # Sets the library as a shared library.
        SHARED
        #将bzip下的.c文件添加到library
        #        ${BZIP}
        #        bspatch.c
        # Provides a relative path to your source file(s).
        cpp_native.cpp)

# 将 bspatch 的源码编译为共享库
add_library(
        bspatch_tool
        SHARED
        bspatch.c)

# Searches for a specified prebuilt library and stores the path as a
# variable. Because CMake includes system libraries in the search path by
# default, you only need to specify the name of the public NDK library
# you want to add. CMake verifies that the library exists before
# completing its build.

find_library( # Sets the name of the path variable.
        log-lib

        # Specifies the name of the NDK library that
        # you want CMake to locate.
        log)

## 定义 distributionDir 变量,声明所依赖的 so 库存放的位置，这个不是必须的，只是为了灵活方便
set(distributionDir ${CMAKE_CURRENT_SOURCE_DIR}/third-lib)
## 所依赖的三方库定义名称，STATIC IMPORTED 表示是导入的
add_library(lib_bspatch STATIC IMPORTED)
## 定义导入的 so 库的路径
set_target_properties(lib_bspatch PROPERTIES IMPORTED_LOCATION ${distributionDir}/${ANDROID_ABI}/libbspatch_tool.so)

# Specifies libraries CMake should link to your target library. You
# can link multiple libraries, such as libraries you define in this
# build script, prebuilt third-party libraries, or system libraries.

target_link_libraries( # Specifies the target library.
        cpp_native
        lib_bspatch
        # Links the target library to the log library
        # included in the NDK.
        ${log-lib})
