On Tue, 25 Oct 2005, M. Warner Losh wrote:
> In message: <20051024064605.A44523@cons.org>
> Martin Cracauer <cracauer@cons.org> writes:
> : ELF object files are timestamped. But there's some elf-cmp out there.
>
> Elf .o's are timestampped,
Script started on Thu Oct 27 15:17:31 2005
ttyv2:bde@epsplex:/tmp/z> echo "int i = 1;" >z.c
ttyv2:bde@epsplex:/tmp/z> cc -c z.c
ttyv2:bde@epsplex:/tmp/z> mv z.o z.o~
ttyv2:bde@epsplex:/tmp/z> cc -c z.c
ttyv2:bde@epsplex:/tmp/z> md5 z.o~ z.o
MD5 (z.o~) = c92e2bbb5a0e8b4f05eced238762dde1
MD5 (z.o) = c92e2bbb5a0e8b4f05eced238762dde1
ttyv2:bde@epsplex:/tmp/z> cmp z.o~ z.o
ttyv2:bde@epsplex:/tmp/z> exit
Script done on Thu Oct 27 15:18:14 2005
> but Elf executables are 100% reproducible,
> except when people go out of their way to not make them so. Like
> adding the date or person builder.
True.
Bruce
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