[U-Boot] [RFC PATCH] tools: add a generic config for native tools building

[Tom Rini <trini@konsulko.com>]

On Sat, Dec 01, 2018 at 10:27:49AM +0000, Peter Robinson wrote:
> On Thu, Nov 29, 2018 at 6:40 PM Tom Rini <trini@konsulko.com> wrote:
> >
> > On Tue, Nov 27, 2018 at 06:20:08PM -0200, Otavio Salvador wrote:
> >
> > > The motivation for this is to allow distributions to distribute all
> > > possible tools in a generic way, avoiding the need of specific tools
> > > building for each machine.
> > >
> > > Especially on OpenEmbedded / Yocto Project ecosystem, it is very
> > > common each BSP to end providing their specific tools when they need
> > > to generate images for some SoC (e.g MX23 / MX28 in meta-freescale
> > > case).
> > >
> > > Using this, we can package the tools doing:
> > >
> > > $: make tools-only_defconfig
> > > $: make tools-only
> > >
> > > Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
> > > ---
> > >
> > >  configs/tools-only_defconfig | 3 +++
> > >  tools/Makefile               | 2 +-
> > >  2 files changed, 4 insertions(+), 1 deletion(-)
> > >  create mode 100644 configs/tools-only_defconfig
> > >
> > > diff --git a/configs/tools-only_defconfig b/configs/tools-only_defconfig
> > > new file mode 100644
> > > index 0000000000..be69bdf43a
> > > --- /dev/null
> > > +++ b/configs/tools-only_defconfig
> > > @@ -0,0 +1,3 @@
> > > +CONFIG_SYS_TEXT_BASE=0
> > > +CONFIG_FIT=y
> > > +CONFIG_FIT_SIGNATURE=y
> > > diff --git a/tools/Makefile b/tools/Makefile
> > > index 3c0521f655..e916d0cebb 100644
> > > --- a/tools/Makefile
> > > +++ b/tools/Makefile
> > > @@ -124,7 +124,7 @@ fit_info-objs   := $(dumpimage-mkimage-objs) fit_info.o
> > >  fit_check_sign-objs   := $(dumpimage-mkimage-objs) fit_check_sign.o
> > >  file2include-objs := file2include.o
> > >
> > > -ifneq ($(CONFIG_MX23)$(CONFIG_MX28),)
> > > +ifneq ($(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_FIT_SIGNATURE),)
> > >  # Add CONFIG_MXS into host CFLAGS, so we can check whether or not register
> > >  # the mxsimage support within tools/mxsimage.c .
> > >  HOSTCFLAGS_mxsimage.o += -DCONFIG_MXS
> >
> > Adding in Peter since Fedora had this same problem crop up.  Does
> > something like this work for you guys?  Also adding in Vagrant Cascadian
> > since Debian might want to switch to this too.  Thoughts?  Thanks!
> 
> We currently use the tools-all option, details below, to build the
> tools, which broken in 2018.11 on non arm/x86 platforms due to the
> sandbox dep being added in there. I'm happy to adjust as necessary to
> fix that but I'm not sure the difference between tools-all vs the
> above.
> 
> make CROSS_COMPILE="" defconfig V=1 O=builds/
> make CROSS_COMPILE="" tools-all V=1 O=builds/

Well, with the above you would do tools-only_defconfig then tools-all,
and we would make sure to _not_ enable options in tools-only_defconfig
that may not build on some host platforms as it's intended only for
building tools rather than the myriad of things sandbox is used for.

-- 
Tom
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