Static library; including (sub) H files problem

  • Apologees if this is a basic question, but I'm having beef with Qt (or C++ in general probably). I made a small static (Linux) library in Qt, where the H file I would include in other projects, roughly looks like this:
    // file MyLibrary.h
    #include <subDir/myStruct.h>

    class MyLibrary {
    MyStruct createStruct( int x );

    The library compiles fine, but now I'm trying to use it in another project. In the PRO file, I added the library so it would generate a couple of lines like this:
    INCLUDEPATH += $$PWD/../myLibrary
    DEPENDPATH += $$PWD/../myLibrary
    LIBS += -L$$PWD/../myLibrary/ReleaseX86/ -myLibrary
    PRE_TARGETDEPS += $$PWD/../myLibrary/ReleaseX86/myLibrary.a

    Then in my program that uses the library, I include the file:
    #include <MyLibrary.h>

    I can create the "MyLibrary" class and use it without problems. But when I try to use the "myStruct", problems start. It seems that the other H files included within the library - #include <subDir/myStruct.h>- doesn't get included. The Compiler simply won't recognize MyStruct, even though I can actually look into it. When pressing F4 on it in my code, it nicely moves to the right H file, so the struct seems to be known while coding in Qt. But compiling fails:
    "'MyStruct' does not name a type"

    I can fool the compiler by making a forward declaration of MyStruct within the MyLibrary.h file, so it compiles again. But as soon as I try to do something with MyStruct, it obviously complains that the type is incomplete.

    I guess the include paths are wrong within my context, though it doesn't say it can't find file X, as it does when I make a typo in the "#include <subDir/TYPOmyStruct.h".

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