Arch Linux

Description: After updating my packages with pacman -Syu, allegro will not compile anymore. There are a bunch of olenGL related functions that are undefined.

I tried compiling manually from the git repository at https://github.com/liballeg/allegro5, both the master branch and the 5.2.4 tag. Also tried compiling by downloading the PKGBUILD from https://www.archlinux.org/packages/community/x86_64/allegro/ and the outcome is the same. I'm attaching the output of makepkg -i.

Also, there is the following warning when configuring. I added the following to the CMakeLists.txt file and the warning went away but there are still a lot of compile errors related to GL functions not being declared.

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CMake Warning (dev) at /usr/share/cmake-3.12/Modules/FindOpenGL.cmake:270 (message):
Policy CMP0072 is not set: FindOpenGL prefers GLVND by default when
available. Run "cmake --help-policy CMP0072" for policy details. Use the
cmake_policy command to set the policy and suppress this warning.

FindOpenGL found both a legacy GL library:

OPENGL_gl_LIBRARY: /usr/lib/libGL.so

and GLVND libraries for OpenGL and GLX:

OPENGL_opengl_LIBRARY: /usr/lib/libOpenGL.so
OPENGL_glx_LIBRARY: /usr/lib/libGLX.so

OpenGL_GL_PREFERENCE has not been set to "GLVND" or "LEGACY", so for
compatibility with CMake 3.10 and below the legacy GL library will be used.