COMPMID-557 Added some GLES documentation and rework following OOB testing

Change-Id: I56333ed23d30c5ec3094f64b78a023589064fe06
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/113375
Tested-by: BSG Visual Compute Jenkins server to access repositories on http://mpd-gerrit.cambridge.arm.com <bsgcomp@arm.com>
Reviewed-by: Jim He <jim.he@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/SConstruct b/SConstruct
index 9f772f4..6eba392 100644
--- a/SConstruct
+++ b/SConstruct
@@ -231,7 +231,9 @@
     SConscript("./opencl-1.2-stubs/SConscript", variant_dir="build/%s/opencl-1.2-stubs" % env['build_dir'], duplicate=0)
 
 if env['gles_compute'] and env['os'] != 'android':
-    SConscript("./opengles-3.1/stubs/SConscript", variant_dir="build/%s/opengles-3.1/stubs" % env['build_dir'], duplicate=0)
+    env.Append(CPPPATH = ['#/include/linux'])
+    env.Append(LIBPATH = ["#build/%s/opengles-3.1-stubs" % env['build_dir']])
+    SConscript("./opengles-3.1-stubs/SConscript", variant_dir="build/%s/opengles-3.1-stubs" % env['build_dir'], duplicate=0)
 
 SConscript('./SConscript', variant_dir='#build/%s' % env['build_dir'], duplicate=0)