--- a/setup.py
+++ b/setup.py
@@ -695,7 +695,18 @@ def determine_gl_flags():
         c_options['use_x11'] = True
         c_options['use_egl'] = True
     else:
-        flags['libraries'] = ['GL']
+        if cross_sysroot:
+            flags['include_dirs'] = [cross_sysroot + '/usr/include']
+            flags['library_dirs'] = [cross_sysroot + '/usr/lib']
+
+        if c_options['use_opengl_es2']:
+            print("using GLESv2 libraries")
+            flags['libraries'] = ['GLESv2']
+        else:
+            flags['libraries'] = ['GL']
+
+
+    print("cross_sysroot: " + str(cross_sysroot))
     return flags, base_flags
 
 
@@ -723,14 +734,13 @@ def determine_sdl2():
             sdl_inc = join(include, 'SDL2')
             if isdir(sdl_inc):
                 sdl2_paths.append(sdl_inc)
-        sdl2_paths.extend(['/usr/local/include/SDL2', '/usr/include/SDL2'])
 
     flags['include_dirs'] = sdl2_paths
     flags['extra_link_args'] = []
     flags['extra_compile_args'] = []
     flags['library_dirs'] = (
         sdl2_paths if sdl2_paths else
-        ['/usr/local/lib/'])
+        [''])
 
     if sdl2_flags:
         flags = merge(flags, sdl2_flags)