NDK项目构建多个cmakefiles.txt

发布于 2025-01-18 16:53:29 字数 976 浏览 2 评论 0原文

我的目的是将libprebuilt.so和libmylib.So内置在APK中。构造

    |-mylib_prebuilts
    |  |-libprebuilt.so
    |  |-include_dir
    |  '-CMakeFiles.txt
    |-mylib
    |  |-src
    |  '-CMakeFiles.txt
    '-build.gradle

我的项目在cmakefiles.txt中为mylib_prebuilts

add_library(prebuiltlib SHARED IMPORTED)
target_include_directories(prebuiltlib INTERFACE include_dir)
set_property(TARGET prebuiltlib PROPERTY IMPORTED_LOCATION libprebuilt.so)

，我有以下内容。在lib的cmakefiles.txt中，我有以下

add_subdirectory(../mylib_prebuilts mylib_prebuilts)
add_library(mylib SHARED ${srcs})
target_link_libraries(mylib PUBLIC prebuiltlib)

root gradle.build具有以下内容，

externalNativeBuild {
    cmake {
        version '3.18.1'
        path 'mylib/CMakeLists.txt'
    }
}

我无法从Mylib到达预构建的标题或库。我会收到“找不到标题”错误，或者使用include_directories（../ mylib_prebuilts/include_dir）手动添加标题路径，则构建在链接时找不到符号。

原文

My intent is to have prebuilt libprebuilt.so and libmylib.so built into the apk. My project is structured like this

    |-mylib_prebuilts
    |  |-libprebuilt.so
    |  |-include_dir
    |  '-CMakeFiles.txt
    |-mylib
    |  |-src
    |  '-CMakeFiles.txt
    '-build.gradle

In the CMakeFiles.txt for mylib_prebuilts, I have the following.

add_library(prebuiltlib SHARED IMPORTED)
target_include_directories(prebuiltlib INTERFACE include_dir)
set_property(TARGET prebuiltlib PROPERTY IMPORTED_LOCATION libprebuilt.so)

In the CMakeFiles.txt for lib, I have the following

add_subdirectory(../mylib_prebuilts mylib_prebuilts)
add_library(mylib SHARED ${srcs})
target_link_libraries(mylib PUBLIC prebuiltlib)

The root gradle.build has the following

externalNativeBuild {
    cmake {
        version '3.18.1'
        path 'mylib/CMakeLists.txt'
    }
}

I cannot reach the prebuilt headers or library from mylib. I get "headers not found" error, or if I manually add the header path using include_directories(../mylib_prebuilts/include_dir), build cannot find symbols when linking.

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魔法唧唧 2025-01-25 16:53:29

用我偶然发现的解决方案回答我自己的问题。

mylib_prebuilts/cmakelists.txt必须包含以下更改。

将全局关键字添加到add_library调用。
改用绝对路径
使用$ {make_current_source_dir} set_property调用的相对呼叫
多变的

add_library(prebuiltlib SHARED IMPORTED GLOBAL)
target_include_directories(prebuiltlib INTERFACE include_dir)
set_property(TARGET prebuiltlib PROPERTY IMPORTED_LOCATION ${MAKE_CURRENT_SOURCE_DIR}/libprebuilt.so)

Answering my own question with a solution I stumbled upon.

mylib_prebuilts/CMakeLists.txt has to contain the following changes.

Add GLOBAL keyword to add_library call.
Use absolute path instead
of relative for set_property call using ${MAKE_CURRENT_SOURCE_DIR}
variable

add_library(prebuiltlib SHARED IMPORTED GLOBAL)
target_include_directories(prebuiltlib INTERFACE include_dir)
set_property(TARGET prebuiltlib PROPERTY IMPORTED_LOCATION ${MAKE_CURRENT_SOURCE_DIR}/libprebuilt.so)

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