Re: [Reproducible-builds] randomness_in_objects_inv

2015-03-02 Thread Jérémy Bobbio
Nikolaus Rath:
 Can someone give me more information about how to reproduce this issue?
 I tried to change the file system order of the sphinx documents, but got
 identical results: […]

You could try with the little LD_PRELOAD library that I had found on
Stack Overflow:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=719845#39
http://stackoverflow.com/a/8866709

It will return files from readdir() in reverse order, so if you run it
twice on the same set of files, you have a strong guarantee that it's
going to be in a different order in a subsequent build.

-- 
Lunar.''`. 
lu...@debian.org: :Ⓐ  :  # apt-get install anarchism
`. `'` 
  `-   


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Re: [Reproducible-builds] randomness_in_objects_inv

2015-03-02 Thread Nikolaus Rath
On Mar 02 2015, Jérémy Bobbio lunar-8fiuurrzop0dnm+yrof...@public.gmane.org 
wrote:
 Nikolaus Rath:
 Can someone give me more information about how to reproduce this issue?
 I tried to change the file system order of the sphinx documents, but got
 identical results: […]

 You could try with the little LD_PRELOAD library that I had found on
 Stack Overflow:
 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=719845#39
 http://stackoverflow.com/a/8866709

 It will return files from readdir() in reverse order, so if you run it
 twice on the same set of files, you have a strong guarantee that it's
 going to be in a different order in a subsequent build.

Did you read the example in my mail? ls -U shows the files in readdir
order, and for the second build the positions of file1 and file2 were
switched - yet the sphinx output unchanged.


Best,
-Nikolaus
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