答复: Can OProfile support reproducible bui ld?

Thank you.
I tried to replace the time stamps __DATE__ and __TIME__ macros by a fixed time string, and it works.
Can Oprofile add configurations or just remove the time stamps(if they are not necessary ) in future versions?

-----邮件原件-----
发件人: Michael Petlan [mailto:[email protected]] 
发送时间: 2017年8月30日 22:35
收件人: Zhongwenlin
抄送: William Cohen; Gaokun (King); [email protected]
主题: RE: Can OProfile support reproducible build?

Well, if just these three points are the whole show-stopper, we might make them conditional like

#ifdef REPRODUCIBLE_BUILD
  cout << argv[0] << ": " << PACKAGE << " " << VERSION << endl; #else // the original stuff #endif

... or just remove the timestamps entirely...

If you replace the __DATE__ and __TIME__ macros there by some dummy string, does it build reproducibly?

Michael

On Wed, 30 Aug 2017, Zhongwenlin wrote:
> Hi,
> I use the latest version 1.2.0. And I found that the code below would generate timestamps----just they cause the difference.
> How
> 
>     libutil/op_version.c: 
>                     21: printf("%s: " PACKAGE " " VERSION " compiled on "
> 	                22：__DATE__ " " __TIME__ "\n", app_name);
>            
> 	pe_counting/ocount.cpp:
>                         659: case 'v':
> 			            660: cout << argv[0] << ": " << PACKAGE << " " << VERSION << " compiled on " << __DATE__
> 			            661:<< " " << __TIME__ << endl;
> 
> 	pe_profiling/operf.cpp: 
>                       1344:case 'v':
> 			          1345:cout << argv[0] << ": " << PACKAGE << " " << VERSION << " compiled on " << __DATE__
> 			          1346:<< " " << __TIME__ << endl;
> 
> How can I eliminate the timestamps?
> 
> 
> -----邮件原件-----
> 发件人: William Cohen [mailto:[email protected]]
> 发送时间: 2017年8月29日 2:14
> 收件人: [email protected]; Zhongwenlin
> 抄送: Gaokun (King)
> 主题: Can OProfile support reproducible build?
> 
> From [email protected]:
> 
> 
> Hi,
> 
> When I build Oprofile, I find the build results are different every time. It seems to be caused by some time stamps. How can I get rid of the time stamps?
> 
> As we know, reproducible build is a good way to counter malicious attacks that generate malicious executables, by making it easy to recreate the executable to determine if the result is correct.  How can I eliminate the differences caused by the time stamps? Just remove some code? Or is there any configuration?
> 
> Can Oprofile support reproducible build in later versions?
> 
> Thank you.
> 
> 
> 
> ---------------
> 
> 
> Hi,
> 
> It would be helpful to describe in more detail which version of OProfile is being built, how OProfile is being built, and specific differences between the repeated builds.
> 
> Debian does have some information on techniques on indentify reproducible build issues and ways to address them:
> 
> https://wiki.debian.org/ReproducibleBuilds/Howto
> 
> -Will
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