Index: setup.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/setup.py,v
retrieving revision 1.65
diff -c -r1.65 setup.py
*** setup.py	2001/11/24 09:28:42	1.65
--- setup.py	2001/12/10 12:37:13
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*** 733,738 ****
--- 733,753 ----
      # turn off warnings when deprecated modules are imported
      import warnings
      warnings.filterwarnings("ignore",category=DeprecationWarning)
+     
+     try: # this is something of a hack to semi-track dependencies
+         buildtime = os.path.getmtime("last_successful_build")
+     except OSError:
+         pass
+     else:
+         import glob
+         srcdir = sysconfig.get_config_var("srcdir")
+         files = glob.glob("%s/Include/*.h"%(srcdir,)) + ["pyconfig.h"]
+         times = map(os.path.getmtime, files)
+         modtime = max(times)
+         if modtime > buildtime:
+             print "REMOVING BUILD TREE"
+             os.system("rm -rf build")
+             
      setup(name = 'Python standard library',
            version = '%d.%d' % sys.version_info[:2],
            cmdclass = {'build_ext':PyBuildExt, 'install':PyBuildInstall},
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*** 743,748 ****
--- 758,765 ----
            # Scripts to install
            scripts = ['Tools/scripts/pydoc']
          )
+     # if setup() returns, it was successful:
+     os.system("touch last_successful_build")
  
  # --install-platlib
  if __name__ == '__main__':