https://github.com/lizhangqu/dlfcn_compat

兼容Android 7.0 dlfcn(dlopen、dlsym、dlclose、dlerror)
https://github.com/lizhangqu/dlfcn_compat

dlfcn dlopen dlsym nougat

Last synced: about 2 months ago
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兼容Android 7.0 dlfcn(dlopen、dlsym、dlclose、dlerror)

• Host: GitHub
• URL: https://github.com/lizhangqu/dlfcn_compat
• Owner: lizhangqu
• Created: 2019-01-31T06:29:21.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-12-23T07:47:37.000Z (about 5 years ago)
• Last Synced: 2024-04-16T11:21:22.429Z (9 months ago)
• Topics: dlfcn, dlopen, dlsym, nougat
• Language: C++
• Size: 71.3 KB
• Stars: 160
• Watchers: 6
• Forks: 38
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
### Thanks

Android N的实现来自 https://github.com/avs333/Nougat_dlfunctions

做了一点优化处理

 - 支持除arm之外的CPU架构以支持模拟器，x86，x86_64经过验证没问题，mips和mips64可编译但没经过验证。

 - 支持传递文件名而非绝对路径

 - 不需要进行版本特判，统一使用compat函数，内部进行逻辑分发

    

### 技术原理

见美团的《Android远程调试的探索与实现》相关文章中"符号化"和"突破7.0动态链接的限制"两部分

[Android远程调试的探索与实现](https://tech.meituan.com/2017/07/20/android-remote-debug.html)

### 使用方式

引入cmake

```

set(dlfcn_compat_root_dir /path/to/dlfcn)

add_subdirectory(${dlfcn_compat_root_dir} dlfcn)

include_directories(

         ${dlfcn_compat_root_dir}/include/

)

```

链接静态库

```

target_link_libraries(yourSharedLibrary

        dlfcn_compat_static

)

```

引入头文件

```

#include "dlfcn_compat.h"

```

相关函数

```

extern "C" {

void *dlopen_compat(const char *filename, int flags);

void *dlsym_compat(void *handle, const char *symbol);

int dlclose_compat(void *handle);

const char *dlerror_compat();

int get_sdk_level();

}

```

sample 见 app/src/main/cpp/sample.cpp