first build on Linux: OpenSSL issue

[JoeCFD]

@mzimmers show
ldd your app | grep libssl

[mzimmers]

@JoeCFD nothing.

[JoeCFD]

@mzimmers ldd your app

[mzimmers]

@JoeCFD I did:

mzimmers@LinuxBoxZimmers:~/QtProjects/build-NgaIcdFw-Desktop_Qt_6_5_3_GCC_64bit-Debug$ ldd appNgaIcdFw | grep libssl
mzimmers@LinuxBoxZimmers:~/QtProjects/build-NgaIcdFw-Desktop_Qt_6_5_3_GCC_64bit-Debug$ 

[JoeCFD]

@mzimmers no need. The Qt plugin has issue. Not your code.

[mzimmers]

@JoeCFD which plugin are you referring to?

[JoeCFD]

@mzimmers
Qt has a plugin libqopensslbackend.so in under gcc_64/plugins/tls. But I can see the direct link to libssl.

Anyway, libssl.so -> libssl.so.1.1 softlink always points to libssl.so.1.1.
I guess if you softlink libssl.so to libssl3.so, the problem may be gone. However, other packages in your system may be affected if they use 1.1.

[mzimmers]

@JoeCFD said in first build on Linux: OpenSSL issue:

Qt has a plugin libqopensslbackend.so in under gcc_64/plugins/tls. But I can see the direct link to libssl.

And this plugin links to version 1.1 of OpenSSL? Or is this because of the link in my /usr/lib/x86_64-linux-gnu folder?

I'd prefer to eliminate the error message, but not at the expense of breaking other applications in the system.

[JoeCFD]

@mzimmers Which Qt modules are you using? I ran a few Qt 6.6 network examples and could not see your issue.

[mzimmers]

@JoeCFD

Qt 6.5.3
Desktop gcc 64-bit
WebAssembly (single-threaded)
Android
Sources
Qt HTTP Server (TP)
Qt Virtual Keyboard
Qt WebSockets

Thanks...

[SGaist]

How come you have both OpenSSL 3 and 1.1 ?

How did you install them ?

[JoeCFD]

@mzimmers I have two in my computer as well. But my libssl points to libssl.so.3 and openssl version shows OpenSSL 3.0.2.

Maybe you can try to reinstall it.
sudo apt-get reinstall openssl
and then run
openssl version
to see if you have the right version

[mzimmers]

@JoeCFD still points to 1.1. shrug

I suppose I could manually relink it, but I'm not sure about the side effects.

[mzimmers]

@SGaist I have no idea - this is how the system came to me. The only real change my IT department made was to install some anti-virus application; maybe that used the older version of openssl?

[JoeCFD]

@mzimmers anti-virus application in Linux? I do not have any. But I know Linux viruses indeed exist.

I have libssl.so.3. You seem not having it.
run
sudo synaptic
Search for libssl
to see if you have installed libssl-dev
If not, install it. This one has version 3.0.2.

[mzimmers]

@JoeCFD I believe I do have it:

mzimmers@LinuxBoxZimmers:~/Downloads$ whereis libssl
libssl: /usr/lib/x86_64-linux-gnu/libssl.so /usr/lib/x86_64-linux-gnu/libssl3.so /usr/lib/x86_64-linux-gnu/libssl.a
mzimmers@LinuxBoxZimmers:~/Downloads$ cd /usr/lib/x86_64-linux-gnu/
mzimmers@LinuxBoxZimmers:/usr/lib/x86_64-linux-gnu$ ls -l libssl*
-rw-r--r-- 1 root root  382024 Feb 17  2023 libssl3.so
-rw-r--r-- 1 root root 1016494 Oct 10 02:03 libssl.a
lrwxrwxrwx 1 root root      13 Oct 10 02:03 libssl.so -> libssl.so.1.1
-rw-r--r-- 1 root root  598104 Oct 10 02:03 libssl.so.1.1
mzimmers@LinuxBoxZimmers:/usr/lib/x86_64-linux-gnu$ 

The link just happens to be pointing to my older version. I don't know why.

[JoeCFD]

@mzimmers you do not have libssl.so.3 while you have libssl3.so.

[mzimmers]

@JoeCFD oops...good catch.

[JoeCFD]

@mzimmers
the latest ssl version is 3.0.2 in Jammy 22.04
https://launchpad.net/ubuntu/jammy/+source/openssl
I guess you need to upgrade your Ubuntu.

[mzimmers]

@JoeCFD what output do you get when you run this command:

ls -l /usr/lib/x86_64-linux-gnu/libssl*

And, since it appears that I have an older version of openssl, how do I go about removing the old version without disrupting the rest of my system?