Index: tools/config.py
===================================================================
--- tools/config.py	(revision 1783f75118ab802742bad1e7331b0683d285eb5d)
+++ tools/config.py	(revision f69d5a8d20536cc23c13cd8c418a1ffcde6eab5a)
@@ -43,11 +43,12 @@
 
 ARGPOS_RULES = 1
-ARGPOS_CHOICE = 2
-ARGPOS_PRESET = 3
+ARGPOS_PRESETS_DIR = 2
+ARGPOS_CHOICE = 3
+ARGPOS_PRESET = 4
 
 RULES_FILE = sys.argv[ARGPOS_RULES]
 MAKEFILE = 'Makefile.config'
 MACROS = 'config.h'
-PRESETS_DIR = 'defaults'
+PRESETS_DIR = sys.argv[ARGPOS_PRESETS_DIR]
 
 class BinaryOp: