标签: dynamic-library

我运行PHP脚本并得到此错误:

PHP警告:PHP启动:无法加载动态库'/usr/local/lib/php/extensions/no-debug-non-zts-20090626/ixed.5.2.lin' - /usr/local/lib/php/extensions /no-debug-non-zts-20090626/ixed.5.2.lin:无法打开共享对象文件:第0行的"未知"中没有此类文件或目录

那是什么意思？

在Xcode 6.0.1中使用嵌入式框架(dyld)时,部署目标小于iOS 8,我得到:

• 构建成功
• 运行时库加载错误

错误:

dyld: Library not loaded: @rpath/ObjectiveLyricsTouch2.framework/ObjectiveLyricsTouch2        
Referenced from: /private/var/mobile/Containers/Bundle/Application/DC65ACA9-98E5-46CD-95F8-829D3416F6C0/musiXmatch.app/musiXmatch
Reason: image not found
(lldb) 

我正在尝试为iOS应用程序制作动态框架.感谢新版本的Xcode(6),我们可以在创建新项目时选择Cocoa Touch Framework,不再需要添加聚合目标,运行脚本等等.构建框架时我没有问题.但是当我尝试在iOS应用程序中使用它时,我遇到了一些架构问题.

ld: warning: ignoring file /Library/Frameworks/MyFramework.framework/MyFramework, file was built for x86_64 which is not the architecture being linked (arm64): /Library/Frameworks/MyFramework.framework/MyFramework
Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$_MyFrameworkWebService", referenced from:
      objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

ld: warning: ignoring file /Library/Frameworks/MyFramework.framework/MyFramework, file was built for x86_64 which is not the architecture being linked (armv7): /Library/Frameworks/MyFramework.framework/MyFramework
Undefined symbols for architecture armv7:
  "_OBJC_CLASS_$_MyFrameworkWebService", referenced …

我想控制在CMake中找到/链接我的二进制文件的库的类型.最终目标是,"尽可能静态地"生成二进制文件,以便静态链接每个具有可用静态版本的库.这很重要,因为在测试期间可以在不同系统中实现二进制文件的可移植性.

ATM这似乎很难实现,因为FindXXX.cmake软件包,或者更确切地说,只要静态和动态都可用,find_library命令总是会获取动态库.

有关如何实现此功能的提示 - 最好以优雅的方式 - 非常受欢迎!

我有一个共享库,由我无法控制的另一个应用程序使用,需要*.so对象.我的库使用sqlite3,它需要与它静态链接(我绝对需要一个自包含的二进制文件).

当我尝试编译和链接我的库时:

-fpic -flto -pthread -m64
-flto -static -shared

我最终得到以下错误:

/usr/bin/ld: /usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.6.1/crtbeginT.o: relocation R_X86_64_32 against `__DTOR_END__' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.6.1/crtbeginT.o: could not read symbols: Bad value
collect2: ld returned 1 exit status

什么是与-fPIC相关的重新编译？我的代码还是CRT？

我已经尝试用-fPIC编译我的对象,结果相同.

谢谢.

编辑:

g++ -c -fPIC -o bar.o bar.cpp
g++ -shared -o bar.so bar.o

g++ -c -fPIC -o bar.o bar.cpp
g++ -static -shared -o bar.so bar.o

问题似乎与CRT(crtbeginT.o)有关.我应该重新编译GCC - 用pic还是其他什么？

我正在尝试正常导入 TensorFlow python 包，但出现以下错误：

这是上面终端图像中的文本：

2020-02-23 19:01:06.163940: W tensorflow/stream_executor/platform/default/dso_loader.cc:55] Could not load dynamic library 'libnvinfer.so.6'; dlerror: libnvinfer.so.6: cannot open shared object file: No such file or directory
2020-02-23 19:01:06.164019: W tensorflow/stream_executor/platform/default/dso_loader.cc:55] Could not load dynamic library 'libnvinfer_plugin.so.6'; dlerror: libnvinfer_plugin.so.6: cannot open shared object file: No such file or directory
2020-02-23 19:01:06.164030: W tensorflow/compiler/tf2tensorrt/utils/py_utils.cc:30] Cannot dlopen some TensorRT libraries. If you would like to use Nvidia GPU with TensorRT, please make sure the missing libraries mentioned above are installed properly.
<module …

我最近在GNU ld中发现了链接器选项"-Bsymbolic-functions":

-Bsymbolic
  When creating a shared library, bind references to global symbols to the 
  definition within the shared library, if any. Normally, it is possible 
  for a program linked against a shared library to override the definition 
  within the shared library. 

  This option is only meaningful on ELF platforms which support shared libraries.

-Bsymbolic-functions
  When creating a shared library, bind references to global function symbols 
  to the definition within the shared library, if any.  

  This option is only meaningful …

我想使用函数'dlopen()'在iOS平台上调用动态库,是函数'dlopen()'私有API？

XCode中的静态库和动态库有什么区别？为什么Apple不允许我们在iOS应用程序中使用动态库？

如果您试图了解动态链接,这个问题很可能会引起关注.

该问题的答案之一提供了创建和使用动态库的一个很好的例子.基于它,我有一些简单的文件:

main.c中:

extern void someFunction (int x);

int main (int argc, char** argv ) {
    someFunction(666);
}

mylibrary.c:

#include <stdio.h>

void someFunction (int x) {
    printf ("\nsomeFunction called with x=%d\n", x);
}

生成文件:

main: mylibrary.c main.c
    gcc -c mylibrary.c
    gcc -dynamiclib -current_version 1.0 mylibrary.o -o libmylibrary.dylib
    gcc -c main.c
    gcc -v main.o ./libmylibrary.dylib -o main

clean:
    rm *.o
    rm main
    rm *.dylib

到目前为止,一切都很好.如果我创建然后在命令提示符下输入./main,我会看到预期的输出:

someFunction called with x=666

现在,我想把事情搞混一些.我创建了一个目录hidelib,它是我主目录的子目录.我在makefile中添加了一行:

main: mylibrary.c main.c
    gcc -c mylibrary.c
    gcc -dynamiclib -current_version …