Let --with-opengl default to automatic, don't link with the lib if it wasn't built.

buildtools/build_wxwidgets.py

@@ -280,7 +280,6 @@ def main(wxDir, args):
                 configure_opts.append("--with-gtk=2")
 
         wxpy_configure_opts = [
-                            "--with-opengl",
                             "--enable-sound",
                             "--enable-graphics_ctx",
                             "--enable-display",

wscript

@@ -221,8 +221,12 @@ def configure(conf):
                        uselib_store='WXHTML', mandatory=True,
                        msg='Finding libs for WXHTML')
 
+        if cfg.checkSetup(wxConfigDir, 'wxUSE_GLCANVAS'):
+            gl_libs = '--libs gl,core,net'
+        else:
+            gl_libs = '--libs core,net'
         conf.check_cfg(path=conf.options.wx_config, package='',
-                       args='--cxxflags --libs gl,core,net' + rpath,
+                       args='--cxxflags ' + gl_libs + rpath,
                        uselib_store='WXGL', mandatory=True,
                        msg='Finding libs for WXGL')