[U-Boot] [Reproducible-builds] [PATCH] build: create time and date independent binary

[Paul Kocialkowski <contact@paulk.fr>]

Le dimanche 19 juillet 2015 ? 17:47 +0200, Holger Levsen a ?crit :
> > There seem to be two solutions to this:
> > * Including a script (e.g. the one from coreboot) to build the toolchain
> > as part of the build process
> > * Using native builds with visualization on the servers that run the
> > builds for the reproducible task force
> > 
> > I tend to prefer the second one since it only requires a one-time setup
> > cost, while the other one, that requires to build toolchains for each
> > test build, implies a considerably longer build time for each test.
> 
> these hosts also need maintenance so I actually prefer the first.

I understand. We could raise the topic on the U-Boot mailing list and
see whether adding the scripts to build the cross-compilers tu U-Boot
would be doable or not.

Otherwise, we can just grab those scripts aside the U-Boot source code
for the reproducible task, so that we don't have to wait for a long
discussion to conclude.
 
> > The basics for building U-Boot are the following (e.g. for the
> > Cubieboard2 target)
> > git clone git://git.denx.de/u-boot.git
> > cd u-boot
> > make -C $SRC O=$DST CROSS_COMPILE=$CROSS_COMPILE Cubieboard2_defconfig
> > make -C $SRC O=$DST CROSS_COMPILE=$CROSS_COMPILE
> 
> aint there a makefile with a proper target? Also how to build these cross 
> compilers?

I am using those scripts, that I wrote:
http://git.paulk.fr/gitweb/?p=embedded-freedom-scripts.git;a=tree;f=u-boot;h=f735bc015b056c3b63a0144703d7f7168382ca59;hb=HEAD

That can help but is not really usable as-is.

> > Let me know if you need more indications on this.
> 
> yes, please. best a complete runnable script, aka a _working_ 5-10 liner, not 
> the fancy one with variations, rebuilds and running debbindiff. Just the above 
> "4 lines in working" - (those 4 lines dont work cause the variables are not 
> defined...)

I could do that, but we have to figure out the toolchain issue first, I
suppose.

-- 
Paul Kocialkowski, Replicant developer

Replicant is a fully free Android distribution running on several
devices, a free software mobile operating system putting the emphasis on
freedom and privacy/security.

Website: http://www.replicant.us/
Blog: http://blog.replicant.us/
Wiki/tracker/forums: http://redmine.replicant.us/
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