轉換gcc的一個命令向CMake的Android NDK

我需要添加可與gcc編譯交流項目如下轉換gcc的一個命令向CMake的Android NDK

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

我提出code.c文件內容，以我的Android NDK .cpp文件中（src /主/ CPP /原生lib.cpp）和還遷內smproject目錄src/main/cpp/smproject/目錄

這裏是我的CMakeList.txt內容的所有文件

# 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 
         )

我試圖按照Android NDK, CMake with other libraries但它開始嘔吐gradle這個錯誤

這並沒有爲我工作試過

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' 
}

錯誤

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

來源

2017-04-26 Mr. A

你會得到什麼樣的錯誤？請至少發佈錯誤消息。 – jpo38

我添加了錯誤信息 –

在某些時候，您可能需要告訴gradle哪裏可以找到庫（epic5.1）。 – jpo38

你只需要添加一些以下的build.gradle文件到你的模塊build.gradle，像這樣

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

並將源文件放在main/jni。也許，您需要將cFlags更改爲cppFlags，但我建議您搜索關於此的更多信息，建議基於這樣一個事實，即您有用於C++的-fnoexceptions標誌。

您當然需要libepic5.1.so二進制文件來使用它進行編譯，如果您可以添加它的源代碼，它將起作用。

來源

2017-05-09 11:23:42

轉換gcc的一個命令向CMake的Android NDK

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