how to define install target of lib in the .pro file

[thgis]

Hi.

I cant seem to find information on how to define an install target through the .pro file
I thought I could do something like:

unix{
    message(inside unix scope)
    target.path = /usr/local/lib
    target.files = *.so
    INSTALLS += target
    #QMAKE_EXTRA_TARGETS += target
    #PRE_TARGETDEPS += target
}

unix{
    message(inside unix scope)
    target.path = /usr/local/lib
    target.files = *.so
    INSTALLS += target
    #QMAKE_EXTRA_TARGETS += target
    #PRE_TARGETDEPS += target
}

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The last two lines was also tested but no difference

My question. How do I specify the install target through the pro file. I would like the install to move *.so to /usr/local/lib and *.h to /usr/local/include/myLib
I did not find enough information in the qmake manual.

Can anybody help me?