Index: Lib/distutils/command/build_scripts.py
===================================================================
--- Lib/distutils/command/build_scripts.py	(Revision 86466)
+++ Lib/distutils/command/build_scripts.py	(Arbeitskopie)
@@ -74,7 +74,7 @@
             # that way, we'll get accurate feedback if we can read the
             # script.
             try:
-                f = open(script, "r")
+                f = open(script, "r", errors="surrogateescape")
             except IOError:
                 if not self.dry_run:
                     raise
@@ -95,7 +95,7 @@
                          self.build_dir)
                 updated_files.append(outfile)
                 if not self.dry_run:
-                    outf = open(outfile, "w")
+                    outf = open(outfile, "w", errors="surrogateescape")
                     if not sysconfig.python_build:
                         outf.write("#!%s%s\n" %
                                    (self.executable,