[Qt-interest] Get parent directory when including .pro files

[Lars Amsel]

Hi,

I use a master.pro to manage tasks that are common to my projects. One is to 
add the resource file to the build flags.

----8<----8<----
win32 {
   QMAKE_LFLAGS_WINDOWS += $${TARGET}.res
}
----8<----8<----

There are a few projects that do not have such a resource. So I want to do a 
test whether the resource file exists before added it the the make flags. 
Unfortunately

win32 {
   exists($${TARGET}.res) {
     QMAKE_LFLAGS_WINDOWS += $${TARGET}.res
   }
}

does not work as exists do the test in the directory of the master.pro instead 
of the project.pro. Is there a variable that holds this information or some 
other trick?

regards

Lars