cmake_minimum_required(VERSION 2.8.11)
project(aVeryNiceProject)

set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_MACOSX_RPATH 1)

set(WITH_QT true CACHE BOOL "Enable Qt")

if(WITH_QT)
    add_definitions(-DQT_FRAMEWORK)
    find_package(Qt5Core REQUIRED)
    message(STATUS "using Qt framework")
else()
    add_definitions(-DWITHOUT_QT_FRAMEWORK)
endif()

if(MSVC)
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -W3")
else()
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g -ggdb")
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
endif()

add_executable(foo main.cpp)