将gcc命令转换为CMake for android ndk

我需要添加可以用gcc编译的ac工程如下

 gcc -I/usr/include/epic5.1 -I/usr/include/i386-linux-gnu/epic5.1 -I./smproject/ -o code code.c ./smproject/smlib.so -lepic5.1 

我已经将code.c文件内容移动到我的Android NDK .cpp文件(src / main / cpp / native-lib.cpp),并将smproject目录中的所有文件移动到src/main/cpp/smproject/目录

这是我的CMakeList.txt内容

 # 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. include_directories( /usr/include/epic5.1 ) include_directories( /usr/include/i386-linux-gnu/epic5.1 ) include_directories( src/main/cpp ) set_target_properties( delorean PROPERTIES IMPORTED_LOCATION src/main/cpp/smlib.so ) add_library( smlib STATIC IMPORTED ) 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). src/main/cpp/native-lib.cpp ) # 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, pre-built 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} smlib ) 

我试图跟随Android NDK,CMake与其他库,但是这并不适用于我,它开始抛出gradle错误

尝试下面的build.gradle文件

 apply plugin: 'com.android.application' android { compileSdkVersion 25 buildToolsVersion "25.0.2" defaultConfig { applicationId "in.etpg.sampleapp" minSdkVersion 15 targetSdkVersion 25 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" externalNativeBuild { cmake { cppFlags "-I/usr/include/epic5.1 -I/usr/include/i386-linux-gnu/epic5.1 -lepic5.1 -frtti -fexceptions" } } } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } externalNativeBuild { cmake { path "CMakeLists.txt" } } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { exclude group: 'com.android.support', module: 'support-annotations' }) compile 'com.android.support:appcompat-v7:25.3.1' compile 'com.android.support.constraint:constraint-layout:1.0.2' testCompile 'junit:junit:4.12' } 

错误

 Error:cannot find -lepic5.1 Error:error: linker command failed with exit code 1 (use -v to see Warning:warning: -lepic5.1: 'linker' input unused Error:A problem occurred configuring project ':app'. > executing external native build for cmake /Users/laptop.user/AndroidStudioProjects/SampleApp/app/CMakeLists.txt 

Solutions Collecting From Web of "将gcc命令转换为CMake for android ndk"

你只需要添加一些东西到你的模块build.gradle ,就像这样

 ndk { moduleName "code" cFlags "-I/usr/include/epic5.1 -I/usr/include/i386-linux-gnu/epic5.1 -lepic5.1 -frtti -fexceptions" ldLibs "log" } 

并将源文件放在main / jni中

也许,你需要将cFlags改为cppFlags ,但是我build议你search更多的关于这个的信息,这个build议是基于你有-fnoexceptions标志的事实, -fnoexceptions标志是c ++的。

你当然需要libepic5.1.so二进制文件来编译它,如果你可以添加它的源代码,它将起作用。