NDK 与 CMake，没有编译文件

Question

我使用的CMakeLists.txt如下，我知道就是这个，因为如果我输入错误，就会打印错误。

cmake_minimum_required(VERSION 3.27)


set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -u ANativeActivity_onCreate")


set(COMMON_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../common/src")
set(COMMON_HEADERS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../common/include")
set(GAME_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../game/src")
set(GAME_HEADERS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../game/include")


#All files that are compiled
file(
  GLOB_RECURSE COMMON_SRCS
  ${COMMON_SOURCE_DIR}/*.cc
  ${COMMON_SOURCE_DIR}/*.cpp
)
file(
  GLOB_RECURSE GAME_SRCS
  ${GAME_SOURCE_DIR}/*.cc
  ${GAME_SOURCE_DIR}/*.cpp
)


add_library(
  fc
  ${COMMON_SRCS}
  ${GAME_SRCS}
)
  
target_include_directories(
  fc PUBLIC
  ${COMMON_HEADERS_DIR}
  ${GAME_HEADERS_DIR}
)

target_compile_features(fc PUBLIC cxx_std_20)

target_link_libraries(fc PUBLIC
    log
    android
)

在cmd中：

#./gradlew assembleDebug

Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

For more on this, please refer to https://docs.gradle.org/8.5/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.

BUILD SUCCESSFUL in 2s
34 actionable tasks: 34 executed

我有一个 apk，但我的文件没有被编译，尽管在 生成的 cmake 文件夹的compile_commands.json，我可以读取所有命令来编译我的文件。我手动检查过，有些命令有效。 所以在生成的cmake文件夹中，我找不到我的任何构建文件。

构建.gradle：

plugins {
    id 'com.android.application'
}

android {
    defaultConfig {
        applicationId "com.you.fc"
        versionCode 1
        versionName "1.0"

        externalNativeBuild {
            cmake {
                cppFlags "-fexceptions -frtti -std=c++20"
                arguments "-DANDROID_STL=c++_shared"
                abiFilters 'arm64-v8a'
            }
        }
        targetSdk 33
        minSdk 22
    }

    splits {
        abi {
            enable true
            reset()
            include "arm64-v8a"
            universalApk true
        }
    }
    externalNativeBuild {
        cmake {
            version "3.27.4"
            path file('CMakeLists.txt')
        }
    }
    buildToolsVersion '33.0.0'
    ndkPath "/home/me/Desktop/dev/android/android-ndk-r25c/"
    compileSdk 33
    namespace 'com.you.fc'
}

dependencies {
    implementation 'androidx.appcompat:appcompat:1.5.1'
}

你知道发生什么事吗？

Ndk：使用 r26b 和 r25c 进行测试
Gradle：使用 7.5.1 和 8.5 进行测试
CMake：使用 3.18 和 3.27 进行测试
操作系统：Ubuntu 23

Answer 1

我的错，我忘记了 add_library() 中的“共享”
看 https://developer.android.com/studio/projects/configure-cmake