Linking static library project in QtCreator

[remy_david]

Hello,

I am trying to use a static library project across several application projects in Qt Creator (with Nokia Qt SDK).
My Qt Creator workspace is as follow:

/mylib > .pro + source + headers
/mylib-build-simulator/release > libmylib.a
/mylib-build-simulator/debug > libmylib.a
/myapp1 > .pro + source + headers
/myapp2 > .pro + source + headers
...

My lib project is compiling fine and creates libmylib.a in different folders depending on the build configuration.
So far, in my applications .pro I have:

TEMPLATE = app
DEPENDPATH += ../mylib > this is to resolve the library headers, seems to work fine

simulator:debug {
    POST_TARGETDEPS += ../mylib-build-simulator/debug/libmylib.a
    LIBS += -L../mylib-build-simulator/debug/ -lmylib
}

simulator:release {
    POST_TARGETDEPS += ../mylib-build-simulator/release/libmylib.a
    LIBS += -L../mylib-build-simulator/release/ -lmylib
}

But I have :
error: No rule to make target `../mylib-build-simulator/debug/libmylib.a', needed by `debug\app1.exe'. Stop.

How can I make my app project to build the lib project?

Thanks