QtCreator - building a Win32 application with cmake [SOLVED]

Gustavo Ribeiro Croscato

I'm trying to use QtCreator to build windows MFC applications using cmake.

Currently I have a simple test application which is

CMakeLists.txt

project(Win32App)

cmake_minimum_required(VERSION 3.0.2 FATAL_ERROR)

set(SRC
    main.cpp
)

set(HDR

)

set(RES)

add_definitions(-DWIN32 -D_WINDOWS -D_UNICODE -DUNICODE)

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /SUBSYSTEM:WINDOWS,5.01")

add_custom_target(${CMAKE_PROJECT}_HEADERS SOURCES ${HDR})

add_executable(${CMAKE_PROJECT_NAME} ${SRC} ${RES})

main.cpp

#include <Windows.h>

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    return 0;
}

it compiles okay in command line with cmake .. && cmake --build .
In QtCreator occurs the following error MSVCRTD.lib(exe_main.obj) : error LNK2019: unresolved external symbol _main referenced in function "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ)

To me it seems that the /SUBSYSTEM:WINDOWS,5.01 is being ignored during the QtCreator compilation process.

Any ideias will be welcome.

Thank you!

Gustavo Ribeiro Croscato

I found a solution. In case anyone has the same problem just add the following to you CMakeLists.txt:

if(WIN32)
  set(GUI_TYPE WIN32)
elseif(APPLE)
  set(GUI_TYPE MACOSX_BUNDLE)
endif()

then add

${GUI_TYPE}

to your target.

My CMakeLists.txt is now

project(Win32App)

cmake_minimum_required(VERSION 3.0.2 FATAL_ERROR)

if(WIN32)
  set(GUI_TYPE WIN32)
elseif(APPLE)
  set(GUI_TYPE MACOSX_BUNDLE)
endif()

set(SRC
    main.cpp
)

set(HDR)

set(RES)

add_definitions(-DWIN32 -D_WINDOWS -D_UNICODE -DUNICODE)

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /SUBSYSTEM:WINDOWS,5.01")

add_custom_target(${PROJECT_NAME}_HEADERS SOURCES ${HDR})

add_executable(${CMAKE_PROJECT_NAME} ${GUI_TYPE} ${SRC} ${RES})