Avoid the use of 'unset', which isn't available on all platforms. Fixes SF

Yhg1s · Yhg1s · commit ee6a4a28ceb8 · 2001-07-19T09:34:09.000Z
bug #442627.
diff --git a/Makefile.pre.in b/Makefile.pre.in
@@ -286,7 +286,7 @@ platform: $(PYTHON)
 
 # Build the shared modules
 sharedmods: $(PYTHON)
-	unset PYTHONPATH PYTHONHOME PYTHONSTARTUP; \
+	PYTHONPATH= PYTHONHOME= PYTHONSTARTUP= \
 		./$(PYTHON) $(srcdir)/setup.py build
 
 # buildno should really depend on something like LIBRARY_SRC
