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-rw-r--r--attoconf/lib/arches.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/attoconf/lib/arches.py b/attoconf/lib/arches.py
index c168292..595b396 100644
--- a/attoconf/lib/arches.py
+++ b/attoconf/lib/arches.py
@@ -20,6 +20,9 @@ from __future__ import print_function, division, absolute_import
from ..classy import ClassyProject
from ..types import triple
+def build(build, BUILD):
+ pass
+
def host(build, HOST):
if HOST is None:
BUILD, origin = build.vars['BUILD']
@@ -41,7 +44,7 @@ class Arches2(ClassyProject):
super(Arches2, self).arches()
self.add_help('System types:', hidden=False)
self.add_option('--build', init=None,
- type=triple, check=None,
+ type=triple, check=build,
help='configure for building on BUILD', hidden=False,
help_def='native')
self.add_option('--host', init=None,