Cleanup OpenGL linking and related code after libepoxy merge

This cleans up the OpenGL build flags and linking.
It additionally also removes some dead code.

One of these dead code paths is WITH_X11_ALPHA which actually never was
active even with the build flag on. The call to use this was never
called because the default initializer for GHOST was set to have it off
per default. Nothing called this function with a boolean value to enable it.

These cleanups are needed to support true headless OpenGL rendering.
Without these cleanups libepoxy will fail to load the correct OpenGL
Libraries as we have already linked them to the blender binary.

Reviewed By: Brecht, Campbell, Jeroen

Differential Revision: http://developer.blender.org/D15554

1 files changed, 0 insertions, 80 deletions

diff --git a/build_files/cmake/Modules/FindOpenGLES.cmake b/build_files/cmake/Modules/FindOpenGLES.cmake
deleted file mode 100644
index 5e82984bed6..00000000000
--- a/build_files/cmake/Modules/FindOpenGLES.cmake
+++ /dev/null
@@ -1,80 +0,0 @@
-# SPDX-License-Identifier: BSD-3-Clause
-# Copyright 2014 Blender Foundation.
-
-# - Try to find OpenGLES
-# Once done this will define
-#
-#  OPENGLES_FOUND           - system has OpenGLES and EGL
-#  OPENGL_EGL_FOUND         - system has EGL
-#  OPENGLES_INCLUDE_DIR     - the GLES include directory
-#  OPENGLES_LIBRARY         - the GLES library
-#  OPENGLES_EGL_INCLUDE_DIR - the EGL include directory
-#  OPENGLES_EGL_LIBRARY     - the EGL library
-#  OPENGLES_LIBRARIES       - all libraries needed for OpenGLES
-#  OPENGLES_INCLUDES        - all includes needed for OpenGLES
-
-# If OPENGLES_ROOT_DIR was defined in the environment, use it.
-IF(NOT OPENGLES_ROOT_DIR AND NOT $ENV{OPENGLES_ROOT_DIR} STREQUAL "")
-  SET(OPENGLES_ROOT_DIR $ENV{OPENGLES_ROOT_DIR})
-ENDIF()
-
-SET(_opengles_SEARCH_DIRS
-  ${OPENGLES_ROOT_DIR}
-)
-
-FIND_PATH(OPENGLES_INCLUDE_DIR
-  NAMES
-    GLES2/gl2.h
-  HINTS
-    ${_opengles_SEARCH_DIRS}
-)
-
-FIND_LIBRARY(OPENGLES_LIBRARY
-  NAMES
-    GLESv2
-  PATHS
-    ${_opengles_SEARCH_DIRS}
-  PATH_SUFFIXES
-    lib64 lib
-)
-
-FIND_PATH(OPENGLES_EGL_INCLUDE_DIR
-  NAMES
-    EGL/egl.h
-  HINTS
-    ${_opengles_SEARCH_DIRS}
-)
-
-FIND_LIBRARY(OPENGLES_EGL_LIBRARY
-  NAMES
-    EGL
-  HINTS
-    ${_opengles_SEARCH_DIRS}
-  PATH_SUFFIXES
-    lib64 lib
-)
-
-IF(OPENGLES_EGL_LIBRARY AND OPENGLES_EGL_INCLUDE_DIR)
-  SET(OPENGL_EGL_FOUND "YES")
-ELSE()
-  SET(OPENGL_EGL_FOUND "NO")
-ENDIF()
-
-IF(OPENGLES_LIBRARY AND OPENGLES_INCLUDE_DIR AND
-   OPENGLES_EGL_LIBRARY AND OPENGLES_EGL_INCLUDE_DIR)
-  SET(OPENGLES_LIBRARIES ${OPENGLES_LIBRARY} ${OPENGLES_LIBRARIES}
-                           ${OPENGLES_EGL_LIBRARY})
-  SET(OPENGLES_INCLUDES ${OPENGLES_INCLUDE_DIR} ${OPENGLES_EGL_INCLUDE_DIR})
-  SET(OPENGLES_FOUND "YES")
-ELSE()
-  SET(OPENGLES_FOUND "NO")
-ENDIF()
-
-MARK_AS_ADVANCED(
-  OPENGLES_EGL_INCLUDE_DIR
-  OPENGLES_EGL_LIBRARY
-  OPENGLES_LIBRARY
-  OPENGLES_INCLUDE_DIR
-)
-
-UNSET(_opengles_SEARCH_DIRS)