How do I use find_package and targets in qmake for C++?

In C++, when using qmake for your projects, you can integrate the CMake-style package management with the help of `find_package` and targets. This allows you to manage dependencies efficiently and use third-party libraries with ease.

Using find_package in qmake

To utilize `find_package` and targets in qmake, you typically start by defining your dependencies in your `.pro` file. Here’s how you can do it:

    # Example of using find_package and targets in qmake
    TEMPLATE = app
    CONFIG += c++11

    # Specify the required package and the target
    find_package(SomeLibrary REQUIRED)
    QT += core
    greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

    # Define your executable
    TARGET = MyApp
    SOURCES += main.cpp

    # Link the target
    LIBS += -lSomeLibrary
    INCLUDEPATH += $$SomeLibrary_INCLUDE_DIRS
    

In this example, you start by defining a basic application template. You use `find_package` to locate the 'SomeLibrary' and make sure it is required for your project. Then, the necessary libraries and include paths are specified to ensure the application can compile successfully using the library.