opengl v2022-12-04

The package opengl is compatible with built-in CMake targets via CMake v3.7 and prior syntax

find_package(OpenGL REQUIRED)
target_link_libraries(main PRIVATE ${OPENGL_LIBRARIES})
target_include_directories(main PRIVATE ${OPENGL_INCLUDE_DIR}) 

and the CMake v3.8 and beyond imported target syntax

find_package(OpenGL REQUIRED)
target_link_libraries(main PRIVATE OpenGL::GL) 

introduction of various components

find_package(OpenGL REQUIRED COMPONENTS GL      # v3.8
                                        GLU     # v3.8
                                        GLX     # v3.10
                                        EGL     # v3.10
                                        OpenGL) # v3.10 

The OpenGL SDK is highly platform dependent and is usually an OS component. It's not realistic to build from source for every platform.

WINDOWS: is part of the Windows SDK which this package installs.
LINUX: the SDK may be installed from your distro's repo or from 3rd parties manually. There are too many to count.
APPLE: consult your distribution vendor on the state of OpenGL support: https://support.apple.com/en-us/HT202823