dynamic-linking

To fix the "cannot open shared object file" error, you must configure dynamic linking search paths by setting RPATH or RUNPATH during compilation, or by using the LD_LIBRARY_PATH environment variable to locate the shared library.

RPATH and RUNPATH are dynamic linker search path configurations that differ in precedence; RPATH is checked before LD_LIBRARY_PATH while RUNPATH is checked after, affecting how shared library dependencies are resolved at runtime.

LD_PRELOAD is an environment variable used for symbol interposition, allowing you to override specific functions in shared libraries by loading your custom library first, which is highly effective for debugging ELF binaries.

Resolving an "undefined symbol" error requires checking symbol visibility controls and ensuring the dynamic linker can locate all dependencies, verifying that exported symbols in the shared library match application expectations.

Yes, you can use dlopen and dlsym to load shared libraries dynamically at runtime, enabling flexible plugin architectures without recompiling your application or linking the libraries at build time.

You need soname versioning when managing shared library updates to ensure ABI compatibility, allowing the dynamic linker to load correct library versions and prevent application crashes from incompatible symbol changes.