<![CDATA["cannot find -lGL" error]]>Hi,
I am trying to build QT weatherinfo example in my ubuntu machine but i got this error:

error: cannot find -lGL

What is the reason of this?

]]>https://forum.qt.io/topic/62828/cannot-find-lgl-errorRSS for NodeMon, 15 Jun 2026 18:05:13 GMTMon, 18 Jan 2016 11:09:18 GMT60<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 12:04:42 GMT]]>@Ratzz @mrjj

The instructions have solved my problem :

https://askubuntu.com/questions/711863/installing-qt-5-5-1-on-ubuntu-14-04-throws-qt-network-ssl-error-on-terminal

But when i run it , it holds the "Loading weather data" screen and it does not show anything

]]>https://forum.qt.io/post/307920https://forum.qt.io/post/307920Mon, 18 Jan 2016 12:04:42 GMT<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 11:48:04 GMT]]>@rapid84
what is your Qt and OpenSSL version?

]]>https://forum.qt.io/post/307916https://forum.qt.io/post/307916Mon, 18 Jan 2016 11:48:04 GMT<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 11:47:59 GMT]]>but do u use SSL?

]]>https://forum.qt.io/post/307915https://forum.qt.io/post/307915Mon, 18 Jan 2016 11:47:59 GMT<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 11:47:27 GMT]]>@mrjj said:

sudo apt-get install libssl-dev

I have already done , but still getting error.

]]>https://forum.qt.io/post/307914https://forum.qt.io/post/307914Mon, 18 Jan 2016 11:47:27 GMT<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 11:45:29 GMT]]>Hi
I think you need to install SSL in ubuntu if not already install
maybe
sudo apt-get install libssl-dev

]]>https://forum.qt.io/post/307912https://forum.qt.io/post/307912Mon, 18 Jan 2016 11:45:29 GMT<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 11:40:10 GMT]]>@Ratzz said:

sudo apt-get install build-essential

I have already upgraded my machine but still get the error:

qt.network.ssl: QSslSocket: cannot resolve SSLv2_client_method
qt.network.ssl: QSslSocket: cannot resolve SSLv2_server_method
]]>https://forum.qt.io/post/307910https://forum.qt.io/post/307910Mon, 18 Jan 2016 11:40:10 GMT<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 11:32:55 GMT]]>@rapid84
I think you should upgrade the build machines using

sudo apt-get install build-essential
]]>https://forum.qt.io/post/307908https://forum.qt.io/post/307908Mon, 18 Jan 2016 11:32:55 GMT<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 11:24:52 GMT]]>@Ratzz
Thanks, but now i got this error :

QSslSocket: cannot resolve SSLv2_client_method
]]>https://forum.qt.io/post/307906https://forum.qt.io/post/307906Mon, 18 Jan 2016 11:24:52 GMT<![CDATA[Reply to "cannot find -lGL" error on Mon, 18 Jan 2016 11:16:16 GMT]]>@rapid84
You should nstall package "libgl1-mesa-dev" using:

sudo apt-get install libgl1-mesa-dev

Sometimes this helps

sudo apt-get install libglu1-mesa-dev -y
]]>https://forum.qt.io/post/307901https://forum.qt.io/post/307901Mon, 18 Jan 2016 11:16:16 GMT