cmake_minimum_required(VERSION 2.8.11) project(test_interface) find_package(Qt5Widgets) set(CMAKE_AUTOMOC ON) set(CMAKE_INCLUDE_CURRENT_DIR ON) add_executable(test_interface_exe WIN32 main.cpp mainwindow.cpp) # No need to specify include directories, compile definitions, the PIC flag, or to # link explicitly to Qt5::WinMain. target_link_libraries(test_interface_exe Qt5::Widgets) file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/try_compile-test.cpp" " #include #include int main(int,char**) { QWidget w; w.show(); return 0; } " ) # The try_compile works because Qt5::Widgets is listed in the LINK_LIBRARIES, # which causes the includes, defines and appropriate PIC flag to be used. try_compile(_TRY_COMPILE_RES "${CMAKE_CURRENT_BINARY_DIR}/try_compile-test" "${CMAKE_CURRENT_BINARY_DIR}/try_compile-test.cpp" LINK_LIBRARIES Qt5::Widgets OUTPUT_VARIABLE TC_OV ) if (NOT _TRY_COMPILE_RES) message(SEND_ERROR "The use of try_compile with Qt5::Widgets failed. The output was :\n${TC_OV}") endif()