loadLib.cpp

// Example to load symbols from a dynamic library.
// This executable loads a DLL/SO file whose name can be be unknown until run-time.
// See the dynamicLib.cpp example for how to define symbols in a library.
 
#include <iostream>
#include <z/file/execdir.hpp>
#include <z/file/library.hpp>
 
int main() {
    z::file::library lib;
 
    // Assume library is in same dir as executable, not necessarily the working dir.
    // Note that you do not have to specify the file extension of the library;
    // by default, the correct extension will be appended based on your OS.
    auto libName = z::file::execdir() + "/dynamicLib";
    if (!lib.load(libName)) {
        std::cout << "Unable to load lib!" << std::endl;
        return -1;
    }
 
    // Load a symbol, assuming it to be a function that returns void and has no parameters.
    auto func = lib.function<void()>("test");
    if (!func) {
        std::cout << "Unable to load symbol \"test\"." << std::endl;
        return -1;
    }
 
    std::cout << "Loaded symbol \"test\" as function. Result:" << std::endl;
    func();
 
    // It's a good habit to unload the library when we no longer need it.
    lib.unload();
 
    return 0;
}