Deploying on linux, executable cannot find shared library at runtime?

[AaronKelsey]

I have developed an application that works on Windows and I am working on getting it working on Linux. I have been able to link the libraries during compilation but I am unable to get them to work at runtime.

I have looked everyone on the internet and I have implemented what I believe is the correct approach but unfortunately it does not seem to work no matter what I try.

when running ldd on the binary It shows that it cannot find the libraries despite changing the location for which it should be looking.

linux-vdso.so.1 => (0x00007fff757f5000)
libopensslwrap.so.1 => not found
libQt5Widgets.so.5 => /usr/lib64/libQt5Widgets.so.5 (0x00000038b8e00000)
libQt5Network.so.5 => /usr/lib64/libQt5Network.so.5 (0x00000038b4e00000)
libQt5Xml.so.5 => /usr/lib64/libQt5Xml.so.5 (0x00007f76a89ee000)
libQt5Gui.so.5 => /usr/lib64/libQt5Gui.so.5 (0x00000038b7600000)
libQt5Core.so.5 => /usr/lib64/libQt5Core.so.5 (0x00000038b6e00000)
libicudata.so.52 => not found
libicui18n.so.52 => not found
libicuio.so.52 => not found
libicule.so.52 => not found
libiculx.so.52 => not found
libicutest.so.52 => not found
libicutu.so.52 => not found
libicuuc.so.52 => not found
libcrypto-1_0_2.so.1.0.2 => not found
libssl-1_0_2.so.1.0.2 => not found
libGL.so.1 => /usr/lib64/libGL.so.1 (0x00000038c0200000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00000038b2a00000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00000038bd200000)

I have implemented this in my project file but unfortunately It does not do anything.

path/to/project/bin <- where the binary is.
path/to/project/lib <- where the library files are.

linux {
QMAKE_LFLAGS_RPATH =
QMAKE_LFLAGS += '-Wl,-rpath,\'\$$ORIGIN/../lib\''
}

Can anyone work out what I have done wrong?

[jsulm]

@AaronKelsey Take a look at https://doc.qt.io/Qt-5/linux-deployment.html

[SGaist]

Hi,

You can use a qt.conf file to say where the libraries are.

For testing purpose, another way is to set the LD_LIBRARY_PATH environment variable to the path where the .libraries can be found.

[Gianluca]

Did you tried to use QMAKE_RPATHDIR that doesn't need to explicitly set compiler flags ??
https://doc.qt.io/qt-5/qmake-variable-reference.html#qmake-rpathdir

Also, did you try to run "readelf -d <binary>" to see if the RPATH has been correctly configured into the application binary ??