How can I configure QT source code if it can't detect default installed OpenGl ES?

UltraBurstXD · wrote on 13 Dec 2020, 19:59

Hi,
I'm trying to install QT from source on Ubuntu 20.10, but I always get:
OpenVG ................................. no
OpenGL:
Desktop OpenGL ....................... no
OpenGL ES 2.0 ........................ no
OpenGL ES 3.0 ........................ no
OpenGL ES 3.1 ........................ no
OpenGL ES 3.2 ........................ no
Vulkan ................................. no

ERROR: The OpenGL functionality tests failed!
You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2],
QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform.

What can I do? I followed the instructions found here: https://wiki.qt.io/Building_Qt_5_from_Git, and https://doc.qt.io/qt-5/configure-options.html

SGaist · 14 Dec 2020, 11:32

Hi and welcome to devnet,

Did you install the corresponding development packages on your system ?

UltraBurstXD · S SGaist 13 Dec 2020, 21:05

@SGaist, yes I did.

SGaist · 14 Dec 2020, 14:21

Since everything related to OpenGL are marked as no, it means that the detection have all failed. You should check the logs to see what exactly happened.

UltraBurstXD · S SGaist 14 Dec 2020, 13:00

@SGaist, Error log:
loaded result for library config.qtbase_gui.libraries.opengl
Trying source 0 (type pkgConfig) of library opengl ...

/usr/bin/pkg-config --exists --silence-errors gl
pkg-config did not find package.
=> source produced no result.
Trying source 1 (type makeSpec) of library opengl ...
header entry 'config.qtbase_gui.libraries.opengl.headers.0' passed condition.
GL/gl.h not found in [] and global paths.
=> source produced no result.
test config.qtbase_gui.libraries.opengl FAILED
loaded result for library config.qtbase_gui.libraries.opengl_es2
Trying source 0 (type pkgConfig) of library opengl_es2 ...
/usr/bin/pkg-config --exists --silence-errors glesv2
pkg-config did not find package.
=> source produced no result.
Trying source 1 (type makeSpec) of library opengl_es2 ...
header entry 'config.qtbase_gui.libraries.opengl_es2.headers.0' passed condition.
GLES2/gl2.h not found in [] and global paths.
=> source produced no result.
test config.qtbase_gui.libraries.opengl_es2 FAILED
loaded result for library config.qtbase_gui.libraries.drm
Trying source 0 (type pkgConfig) of library drm ...
/usr/bin/pkg-config --exists --silence-errors libdrm
pkg-config did not find package.
=> source produced no result.
Trying source 1 (type inline) of library drm ...
xf86drmMode.h not found in [] and global paths.
xf86drm.h not found in [] and global paths.
=> source produced no result.
Trying source 2 (type inline) of library drm ...
=> source failed condition 'config.integrity'.
test config.qtbase_gui.libraries.drm FAILED
loaded result for library config.qtbase_gui.libraries.openvg
Trying source 0 (type pkgConfig) of library openvg ...
/usr/bin/pkg-config --exists --silence-errors vg
pkg-config did not find package.
=> source produced no result.
Trying source 1 (type makeSpec) of library openvg ...
VG/openvg.h not found in [] and global paths.
=> source produced no result.
test config.qtbase_gui.libraries.openvg FAILED

SGaist · 14 Dec 2020, 16:21

What exact packages did you install for OpenGL development ?

UltraBurstXD · S SGaist 14 Dec 2020, 15:22

@SGaist,
libgl-dev, freeglut3-dev, mesa-common-dev and another related. Ubuntu build-essential package too...

SGaist · wrote on 14 Dec 2020, 16:26

Did you restart the build from a clean state after you installed the development packages ?

UltraBurstXD · wrote on 14 Dec 2020, 16:33

How do I do that? I'm new in C++, I came from Java. The "clean state" thing... But did some tests, openGL works well for me in the terminal...

SGaist · wrote on 14 Dec 2020, 18:47

Use an out of source build and nuke it if something goes wrong.

By the way, why are you trying to build from sources ? You can either use the version provided with your distribution or the pre-built version provided by the Qt Company.

UltraBurstXD · wrote on 14 Dec 2020, 19:38

The one provided by my distro is outdated, very outdated. I downloaded the "offline installer" because there are times I'm without internet.

SGaist · wrote on 14 Dec 2020, 19:47

The offline installer already provides you with a pre-built Qt.

UltraBurstXD · wrote on 14 Dec 2020, 19:50

How do I activate it? In tutorial they where explaining how to build from source only... From what I remember. I kinda read the readme file... And the instruction in readme file is:

./configure -prefix $PWD/qtbase <license> -nomake tests
    make -j 4

SGaist · wrote on 14 Dec 2020, 22:22

Did you actually ran the offline installer ?

UltraBurstXD · 15 Dec 2020, 07:52

There is no runnable binary, for what I can see. Or I don't know the name... There are many modules here.

jsulm · wrote on 15 Dec 2020, 07:52

@UltraBurstXD The offline installer is just one file. But offline installers are not available anymore for open source users (without commercial license). So, what exactly did you download?

UltraBurstXD · 15 Dec 2020, 08:03

I downloaded here: https://www.qt.io/offline-installers

jsulm · 15 Dec 2020, 08:11

@UltraBurstXD As I said: offline installer is just one file. Make it executable (chmod u+x OFFLINE_INSTALLER_FILE) and execute it. No need to build anything.

UltraBurstXD · 15 Dec 2020, 08:13

@jsulm I don't know name of offline installer... It's my first time using qt... perhaps should I specify qt modules path to qt creator? And configure the environment variables?

jsulm · wrote on 15 Dec 2020, 08:13

@UltraBurstXD Lets do one step after another: you downloaded the offline installer, is that correct? Like http://download.qt.io/official_releases/qt/5.12/5.12.10/qt-opensource-linux-x64-5.12.10.run