SF #1373150, diffs in working copy after a build

Strip off leading dots and slash so the generated files are the same regardless
of whether you configure in the checkout directory or build.

If anyone configures in a different directory, we might want a cleaner
approach using os.path.*().  Hopefully this is good enough.

1 files changed, 5 insertions, 1 deletions

diff --git a/Parser/asdl_c.py b/Parser/asdl_c.py
index d056c36..2167c30 100755
--- a/Parser/asdl_c.py
+++ b/Parser/asdl_c.py
@@ -638,7 +638,11 @@ class ChainOfVisitors:
             v.emit("", 0)
 
 def main(srcfile):
-    auto_gen_msg = '/* File automatically generated by %s */\n' % sys.argv[0]
+    argv0 = sys.argv[0]
+    index = argv0.find('/')
+    if index > 0:
+        argv0 = argv0[index + 1:]
+    auto_gen_msg = '/* File automatically generated by %s */\n' % argv0
     mod = asdl.parse(srcfile)
     if not asdl.check(mod):
         sys.exit(1)