How do you call dynamic libraries in Linux?

In Linux, the method of dynamic library calling involves using a dynamic linker to load and link the dynamic library, which can be done through the following steps:

1. Compile dynamic library: Use a compiler to compile the source code into a dynamic library file (.so file), for example, use the “-shared” option of the gcc compiler.
2. Linking dynamic libraries: In an application, use the “-l” option and “-L” option of the compiler to link the dynamic library to the application. The “-l” option specifies the name of the dynamic library to link, while the “-L” option specifies the directory where the dynamic library is located.
3. Running an application involves executing the compiled application. During runtime, the dynamic linker will load and link dynamic libraries based on their names and paths.
4. Dynamic linking: at runtime, the dynamic linker resolves symbols (functions, variables, etc.) in the application and maps them to corresponding symbols in the dynamic library, allowing the application to call functions from the dynamic library and use variables from the dynamic library.

In summary, the method for calling dynamic libraries involves compiling and linking the dynamic library with the application, and having the dynamic linker load and link the dynamic library at runtime.