[Bug binutils/31077] objcopy has non-deterministic output

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31077

Nick Clifton <nickc at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nickc at redhat dot com

--- Comment #4 from Nick Clifton <nickc at redhat dot com> ---
(In reply to Yannik Sembritzki from comment #3)
> I have renamed the bug accordingly (the general issue of objcopy producing
> non-deterministic output still stands).

The effect you desire can be achieved by setting the SOURCE_DATE_EPOCH
environment variable and using the latest binutils sources:

  $ objcopy linuxx64.efi.stub fred.efi
  $ sha1sum linuxx64.efi.stub fred.efi
  12db40170c6cd10c7b4fd54843e8a0fb3a5fec8a  linuxx64.efi.stub
  4400f02b09c5b339d688409e56739084844e57c3  fred.efi

  $ export SOURCE_DATE_EPOCH=0
  $ objcopy linuxx64.efi.stub fred.efi
  $ sha1sum linuxx64.efi.stub fred.efi 
  12db40170c6cd10c7b4fd54843e8a0fb3a5fec8a  linuxx64.efi.stub
  12db40170c6cd10c7b4fd54843e8a0fb3a5fec8a  fred.efi

Cheers
  Nick

-- 
You are receiving this mail because:
You are on the CC list for the bug.