Set OpenGL preference to GLVND

ShadowNinja · ShadowNinja · commit 1ec5028e5a0e · 2018-08-18T14:23:41.000-04:00
This silences a CMake warning introduced in CMAKE 3.11.
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
@@ -296,6 +296,7 @@ else()
 		if(NOT HAIKU)
 			find_package(X11 REQUIRED)
 		endif(NOT HAIKU)
+		set(OpenGL_GL_PREFERENCE "GLVND")
 		find_package(OpenGL REQUIRED)
 		find_package(JPEG REQUIRED)
 		find_package(BZip2 REQUIRED)
