| CMP0072 |
| ------- |
| |
| :module:`FindOpenGL` prefers GLVND by default when available. |
| |
| The :module:`FindOpenGL` module provides an ``OpenGL::GL`` target and an |
| ``OPENGL_LIBRARIES`` variable for projects to use for legacy GL interfaces. |
| When both a legacy GL library (e.g. ``libGL.so``) and GLVND libraries |
| for OpenGL and GLX (e.g. ``libOpenGL.so`` and ``libGLX.so``) are available, |
| the module must choose between them. It documents an ``OpenGL_GL_PREFERENCE`` |
| variable that can be used to specify an explicit preference. When no such |
| preference is set, the module must choose a default preference. |
| |
| CMake 3.11 and above prefer to choose GLVND libraries. This policy provides |
| compatibility with projects that expect the legacy GL library to be used. |
| |
| The ``OLD`` behavior for this policy is to set ``OpenGL_GL_PREFERENCE`` to |
| ``LEGACY``. The ``NEW`` behavior for this policy is to set |
| ``OpenGL_GL_PREFERENCE`` to ``GLVND``. |
| |
| This policy was introduced in CMake version 3.11. CMake version |
| |release| warns when the policy is not set and uses ``OLD`` behavior. |
| Use the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` |
| explicitly. |
| |
| .. include:: DEPRECATED.txt |