group WITH_LEGACY_OPENGL with the other GL options

Blender subsystems that care about OpenGL use GL_DEFINITIONS, which now includes the newest (temporary) WITH_LEGACY_OPENGL.

Also updated Gawain's CMake to use this instead of its own logic.

CMakeLists.txt

@@ -1074,6 +1074,10 @@ if(WITH_GL_EGL)
 
 endif()
 
+if(WITH_LEGACY_OPENGL)
+	list(APPEND GL_DEFINITIONS -DWITH_LEGACY_OPENGL)
+endif()
+
 if(WITH_GL_PROFILE_COMPAT)
 	list(APPEND GL_DEFINITIONS -DWITH_GL_PROFILE_COMPAT)
 endif()

intern/gawain/CMakeLists.txt

@@ -28,12 +28,6 @@ set(SRC
 	gawain/vertex_format.h
 )
 
-# remove this when we switch to core profile
-if(WITH_GL_PROFILE_COMPAT)
-	add_definitions(-DWITH_GL_PROFILE_COMPAT)
-	add_definitions(-DWITH_OPENGL_LEGACY)
-else()
-	add_definitions(-DWITH_GL_PROFILE_CORE)
-endif()
+add_definitions(${GL_DEFINITIONS})
 
 blender_add_lib(bf_intern_gawain "${SRC}" "${INC}" "${INC_SYS}")