Clever Geek Handbook

Replacing RPATH when deploying shared Qt libraries

Setting up

  • I have a local Qt installation located in my home directory: /home/user/Qt/...

    (from now on, devdir).

  • The Qt application I am trying to install installs the corresponding shared Qt libraries on /usr/lib/myapplication

    (from now on, installdir).

  • My packaging process is currently set up like this:

    qmake

    > dh_make -s --createorig

    >debuild

Problem

I am trying to set RPATH

in myapplication.pro just to link to libraries in installdir, but currently it links to both installdir and devdir.

I think it has to do with qmake

automatically generating dependencies for the installation libraries. To stop it, I followed the build process with with qmake -nodepend

, but that didn't stop communicating with devdir.

How do I force qmake

installdir to link only to libraries?

code

In myapplication.pro:

QMAKE_LFLAGS = -Wl,-rpath,/usr/lib/myapplication

The resulting link flags in the Makefile are:

LFLAGS = -Wl,-rpath,/usr/lib/myapplication -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-rpath,/home/user/Qt/5.3/gcc_64 -Wl,-rpath,/home/user/Qt/5.3/gcc_64/lib
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The path to /home/user/Qt/5.3/gcc_64

can be deleted by overwriting QMAKE_RPATHDIR

. To suppress both paths, the variable QMAKE_LFLAGS_RPATH

must be empty, as in Setting RPATH Order in QMake



# rpath variables for unix
unix: {
    # suppress the default RPATH
    QMAKE_LFLAGS_RPATH =
    # add custom path
    QMAKE_LFLAGS = -Wl,-rpath,/usr/lib/myapplication
}
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