On Thu, Apr 03, 2014 at 09:42:54PM +0200, Vladimir 'φ-coder/phcoder' Serbinenko
wrote:
> On 03.04.2014 21:26, Ram Pai wrote:
> >> > BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
> >> > -fno-strict-aliasing -Os -msoft-float -pipe \
> >> > -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
> >> > -isystem $(shell $(CROSS32CC) -print-file-name=include)
> >> > \
> >> > -mbig-endian
> >
> > But that is different though.
> How so? It's exactly the same thing: compilation of standalone BE using
> LE compiler.
> Andrey found a very good argument. And if distro can't compile Linux,
> it's surely broken.
> Also powerpc64le is relatively new platform as far as distrros are
> concerned. I think if big distros show good example, other minor will
> follow, resulting in more comfortable environment rather than locking
> ourselves into uncomfortable environments.
Two things:
a) the cross-compilation on 64bit LE to 32bit-BE target has to be
working and supported.
b) distros need to enable (a).
regarding (a) -- is not true currently and i am told that its not in their
plans in
the near future.
regarding (b) -- can't speak for all the major distros. But none have it
currently.
> > Yes it is possible to cross compile for
> > any target on any arch. But the key is that the environment needs to be
> > setup to do so.
> >
> > We are talking about generating crosscompiled grub boot loader by an
> > uninitiated/not-so-expert adminstrator.
> It probably amounts to adding -mbig-endian to TARGET_* and using right
> --target. Both of which can be automated in configure.ac rather than
> maintaining yet another port.
Yes, if (a) and (b) line up.
RP
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