Here are a few question-style titles based on your article, emphasizing the problem and solution: * Qt on Ubuntu: Why Can\'t I Find -lGL and How to Fix It? * Missing OpenGL Libraries: Resolving the \

Resolving the "can't find -lGL" Error in Qt on Ubuntu

When compiling a Qt project, you may encounter the error message "cannot find -lGL." This error typically indicates that a required library for OpenGL support is missing.

Solution:

To resolve this issue, you need to install the "libgl1-mesa-dev" package, which contains the necessary OpenGL development libraries:

sudo apt install libgl1-mesa-dev

Explanation:

The "-lGL" flag is a linker option that instructs the linker to include the OpenGL library in the executable. The error occurs because the "libGL" library is not available on your system. By installing the "libgl1-mesa-dev" package, you ensure that the required OpenGL libraries are accessible to the linker during compilation.

Additional Notes:

• The empty project indicates that there is no issue with your code.
• Qt Creator 2.7.2 and Qt 5.1.0 are both compatible with Ubuntu 13.04.
• If you experience any further issues after installing the package, please consult the Qt documentation or seek assistance from the Qt community.

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