scons: builtin_glsl_function on windows needs bundled getopt.
diff --git a/src/SConscript b/src/SConscript
index d5cde1c..f11894f 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -1,9 +1,17 @@
Import('*')
+
if env['platform'] == 'windows':
SConscript('getopt/SConscript')
SConscript('glsl/SConscript')
+
+if env['hostonly']:
+ # We are just compiling the things necessary on the host for cross
+ # compilation
+ Return()
+
+
# When env['gles'] is set, the targets defined in mapi/glapi/SConscript are not
# used. libgl-xlib and libgl-gdi adapt themselves to use the targets defined
# in mapi/glapi-shared/SConscript. mesa/SConscript also adapts itself to