CODEWITHSUNDEEP
qtubuntu
Arseniy Spiridonov
Arseniy Spiridonov

Reputation: 337

Qt cannot find GL library

Kubuntu 19.10, Qt Creator 4.10.2 Based on Qt 5.13.2 (GCC 5.3.1 20160406 (Red Hat 5.3.1-6), 64 bit)

Qt doesn't see the GL library:

/usr/bin/ld: cannot find -lGL
collect2: error: ld returned 1 exit status
make: *** [Makefile:417: AircraftAlgorithmPack] Error 1
17:05:25: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project AircraftAlgorithmPack (kit: Desktop Qt 5.12.6 GCC 64bit)    When executing step "Make"

Suggested answers from google don't work. All packets with mesa are installed. All needed packets from Qt are installed too.

Upvotes: 1

Views: 1899

Answers (2)

Desty
Desty

Reputation: 1650

I already had libgl-dev installed, but it appeared to have "lost" the symbolic link from libGL.so to libGL.so.1 (which is another symlink), perhaps in one of many rolling upgrades.

It could have been fixed with ln -s, but it sufficed to do:

sudo apt install --reinstall libgl-dev

Upvotes: 2

ΦXocę 웃 Пepeúpa ツ
ΦXocę 웃 Пepeúpa ツ

Reputation: 48297

you usually need:

GLU: (The OpenGL Utility Library (GLU) is a computer graphics library for OpenGL)

Mesa (also called Mesa3D and The Mesa 3D Graphics Library, is an open source software implementation of OpenGL)

FreeGLUT (open-source alternative to the OpenGL Utility Toolkit (GLUT) )

so just do:

$ sudo apt-get update
$ sudo apt-get install libglu1-mesa-dev freeglut3-dev mesa-common-dev

and everything will be fine-

Upvotes: 3

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