Problem installing on RedHat 8, can't find libGL.so

[Superduty60]

Hi, I'm trying to get started with Qt but have hit a roadblock on installation on my RHEL8 system. When running the ../qt5/configure script exactly as shown in the instructions, I'm getting the following error.

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.

The config.log file shows the following:

None of [libGL.so libGL.a] found in [] and global paths.

I have verified that libGL.so is indeed present in /usr/lib64 and I added a link to it in /usr/lib in an attempt to have it be seen. I have also tried adding the QMAKE_LIBDIR_OPENGL and QMAKE_LIBDIR_OPENGL_ES2 macros to the
qtbase/mkspecs/linux-g++/qmake.conf file.

I would appreciate some guidance on this.

Thank you!

[SGaist]

Hi and welcome to devnet,

You should check the test logs, there might be more hint about what exactly failed.

[Superduty60]

@SGaist Thank you, is that something other than the config.log file?

[SGaist]

If memory serves well, there's a folder containing the tests and their result that should also be there.

I don't remember whether RedHat has that option but on Debian you can request for the build dependencies of a package to be installed. This allows to install everything that is needed when you want to manually build a library such as Qt that has packages for that distribution.