This is example 1 of the Copperspice-Journal at https://journal.copperspice.com/

build.sh

#!/bin/bash

cspath="$1/lib/cmake/CopperSpice"
mkdir -p build
cd build

cmake -G "Ninja" \
   -DCMAKE_PREFIX_PATH="$cspath" \
   -DCMAKE_BUILD_TYPE=Release \
   -DCMAKE_INSTALL_PREFIX=../deploy \
   ..

ninja install

CMakeLists.txt

cmake_minimum_required(VERSION 3.16)
project(example_1)
 
include(CheckCXXCompilerFlag)
include(CheckCXXSourceCompiles)
include(CheckIncludeFile)
include(CheckIncludeFiles)
 
find_package(CopperSpice REQUIRED)
 
# file locations for installing
if (CMAKE_SYSTEM_NAME MATCHES "Darwin")
  include(GNUInstallDirs)
 
  # where libraries are located relative to the executable
  set(CMAKE_INSTALL_RPATH "@executable_path/../Resources")
 
elseif(CMAKE_SYSTEM_NAME MATCHES "(Linux|OpenBSD|FreeBSD)")
  include(GNUInstallDirs)
  set(CMAKE_INSTALL_RPATH "\$ORIGIN")
 
elseif(MSVC)
   # use defaults
 
elseif(CMAKE_SYSTEM_NAME MATCHES "Windows")
   set(CMAKE_INSTALL_SYSTEM_RUNTIME_DESTINATION .)
   include(${CopperSpice_DIR}/InstallMinGW.cmake)
 
endif()
 
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_INCLUDE_DIRECTORIES_BEFORE ON)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_STANDARD 17)
 
# location for building binary files
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 
list(APPEND PROJECT_SOURCES
  ${CMAKE_CURRENT_SOURCE_DIR}/main.cpp
)
 
add_executable(${PROJECT_NAME} ${PROJECT_SOURCES})
 
if(CMAKE_SYSTEM_NAME MATCHES "Windows")
  target_link_libraries(${PROJECT_NAME}
    PRIVATE
    netapi32 
    mpr
   -mwindows
  )
endif()
 
target_link_libraries(${PROJECT_NAME}
  PRIVATE
  CopperSpice::CsCore
  CopperSpice::CsGui
)
 
install(TARGETS ${PROJECT_NAME} DESTINATION .)
cs_copy_library(CsCore)
cs_copy_library(CsGui)
 
# installs the platform Gui plugin
cs_copy_plugins(CsGui)

main.cpp

#include <QtCore>
#include <QtGui>
 
int main(int argc, char *argv[])
{
   QApplication app(argc, argv);
 
   QWidget *mainWindow = new QWidget();
   mainWindow->setMinimumSize(700, 350);
 
   QPushButton *pb = new QPushButton();
   pb->setText("Close");
 
   QHBoxLayout *layout = new QHBoxLayout(mainWindow);
   layout->addWidget(pb);
 
   QObject::connect(pb, &QPushButton::clicked, 
         mainWindow, &QWidget::close);
 
   mainWindow->show();
 
   return app.exec();
}