Pres Build step with QtCreator and cmake

[AurelPns]

Hi,

I have a CMakeList project (works correctly with VS) and I want to open it with QtCreator, the problem is with the "add_custom_command"

add_custom_command(TARGET ${target}
PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E make_directory "toto"
WORKING_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}")

I know that the "PRE_BUILD" option works only with VS but I would find a similar thing for QtCreator.
My project is a big one with many sub project so I don't want to add manualy build step and I find nothing about that atm....

Any idea ?