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-rw-r--r--Lib/distutils/command/build_ext.py15
1 files changed, 15 insertions, 0 deletions
diff --git a/Lib/distutils/command/build_ext.py b/Lib/distutils/command/build_ext.py
index 8666975..f732373 100644
--- a/Lib/distutils/command/build_ext.py
+++ b/Lib/distutils/command/build_ext.py
@@ -177,6 +177,21 @@ class build_ext (Command):
# building python standard extensions
self.library_dirs.append('.')
+ # The argument parsing will result in self.define being a string, but
+ # it has to be a list of 2-tuples. All the preprocessor symbols
+ # specified by the 'define' option will be set to '1'. Multiple
+ # symbols can be separated with commas.
+
+ if self.define:
+ defines = string.split(self.define, ',')
+ self.define = map(lambda symbol: (symbol, '1'), defines)
+
+ # The option for macros to undefine is also a string from the
+ # option parsing, but has to be a list. Multiple symbols can also
+ # be separated with commas here.
+ if self.undef:
+ self.undef = string.split(self.undef, ',')
+
# finalize_options ()