diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index 7fc8b0f258..d095c5c874 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -1000,6 +1000,7 @@ DTOOL_CONFIG=[
     ("HAVE_UCONTEXT_H",                'UNDEF',                  '1'),
     ("HAVE_RTTI",                      '1',                      '1'),
     ("HAVE_X11",                       'UNDEF',                  '1'),
+    ("HAVE_XF86DGA",                   'UNDEF',                  '1'),
     ("IS_LINUX",                       'UNDEF',                  '1'),
     ("IS_OSX",                         'UNDEF',                  'UNDEF'),
     ("GLOBAL_OPERATOR_NEW_EXCEPTIONS", 'UNDEF',                  '1'),
@@ -1096,6 +1097,7 @@ def WriteConfigSettings():
         dtool_config["HAVE_SYS_MALLOC_H"] = '1'
         dtool_config["HAVE_OPENAL_FRAMEWORK"] = '1'
         dtool_config["HAVE_X11"] = 'UNDEF'  # We might have X11, but we don't need it.
+        dtool_config["HAVE_XF86DGA"] = 'UNDEF'
         dtool_config["IS_LINUX"] = 'UNDEF'
         dtool_config["IS_OSX"] = '1'
         dtool_config["HAVE_PROC_SELF_EXE"] = 'UNDEF'
@@ -1127,7 +1129,10 @@ def WriteConfigSettings():
 
     if (PkgSkip("PLUGIN")==0):
         #FIXME: do this at runtime or so.
-        plugin_config["P3D_PLUGIN_DOWNLOAD"] = "file://C:\\p3dstage"
+        if (sys.platform == "win32"):
+            plugin_config["P3D_PLUGIN_DOWNLOAD"] = "file://C:\\p3dstage"
+        else:
+            plugin_config["P3D_PLUGIN_DOWNLOAD"] = "/p3dstage"
         plugin_config["P3D_PLUGIN_LOGFILE1"] = ""
         plugin_config["P3D_PLUGIN_LOGFILE2"] = ""
         plugin_config["P3D_PLUGIN_P3D_PLUGIN"] = ""