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android - 新建的cmake项目如何链接第三方静态库？

问题描述

我有一个为 arm64-v8a 架构构建的静态库。我需要编写一个包装器来调用静态库的主要函数之一并将结果传递给 java 代码。为此，我在 android studio 中创建了一个新的本地项目，并将 cpp 文件夹中的静态库添加为 mylib.a。我试图在 CMakeLists.txt 中添加这个库，但项目没有编译。下面是我的 CMakeLists.txt：

# 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 3.4.1)

# 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.
        native-lib

        # Sets the library as a shared library.
        SHARED

        # Provides a relative path to your source file(s).
        native-lib.cpp)

add_library( # Sets the name of the library.
        mylib

        # Sets the library as a shared library.
        STATIC

        # Provides a relative path to your source file(s).
        mylib.a)

# 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)

# 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.
        native-lib

        # Links the target library to the log library
        # included in the NDK.
        ${log-lib}
        ${mylib})

我是 CMake 的新手。请帮助我将静态库与我的共享库链接。

标签： androidcmakeandroid-ndk

解决方案

CMake 通过导入的库访问预建库：https ://cmake.org/cmake/help/latest/command/add_library.html#imported-libraries

add_library(mylib
    STATIC
    IMPORTED
    mylib.a)

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