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-rwxr-xr-xsetup.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/setup.py b/setup.py
index d38321c..1e41f72 100755
--- a/setup.py
+++ b/setup.py
@@ -837,8 +837,10 @@ class ArgParser():
(opt, arg, i) = (optqueue[i], argqueue[i], i + 1)
opt = self.optmap[opt][0]
if (opt not in self.opts) or (self.opts[opt] is None):
- self.opts[opt] = []
- self.opts[opt].append(arg)
+ self.opts[opt] = [arg]
+ else:
+ sys.stderr.write('%s: fatal: duplicate option %s\n' % (self.__program, arg))
+ exit(-1)
'''
Prints a colourful help message