fix module compile error when RTT_ROOT variable not to be set
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1738 bbd45198-f89e-11dd-88c7-29a3b14d5316
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@ -6,7 +6,7 @@ import rtconfig
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if os.getenv('RTT_ROOT'):
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RTT_ROOT = os.getenv('RTT_ROOT')
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else:
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RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
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RTT_ROOT = os.path.normpath(os.getcwd() + '/../..')
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sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
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from building import *
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