From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 22 May 2015 00:37:19 +0200
From: Marc =?UTF-8?B?TWFyw60=?= <5.markmb.5@gmail.com>
Message-ID: <20150522003719.6e865e50@crunchbang>
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References: <20150521221811.1cc69dcd@crunchbang>
 <20150521212432.GQ10686@hermes.click-hack.org>
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Subject: Re: [Xenomai] Raspberry Pi + Xenomai doesn't compile
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To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org

El Thu, 21 May 2015 23:24:32 +0200
Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org> escribi=C3=B3:
> On Thu, May 21, 2015 at 10:18:11PM +0200, Marc Mar=C3=AD wrote:
> > Hello
> >=20
> > I'm trying to put Xenomai 2.6.4 on top of a Raspberry Pi model B
> > with kernel version 3.8.13. In theory, it should be
> > straightforward, but I don't get it to compile, and I don't know if
> > I'm missing something vital or something is broken.
> >=20
> > This is what I executed:
> >=20
> > $ git clone git@github.com:raspberrypi/linux.git
> > $ mv linux rpi-xenomai
> > $ git checkout rpi-3.8.y
> > $ patch -p1 -i \
> > ../xenomai-2.6.4/ksrc/arch/arm/patches/raspberry/ipipe-core-3.8.13-rasp=
berry-pre-2.patch
> > $ ../xenomai-2.6.4/scripts/prepare-kernel.sh --arch=3Darm --linux=3D./ \
> > --adeos=3D../xenomai-2.6.4/ksrc/arch/arm/patches/ipipe-core-3.8.13-arm-=
4.patch
> > $ patch -p1 -i \
> > ../xenomai-2.6.4/ksrc/arch/arm/patches/raspberry/ipipe-core-3.8.13-rasp=
berry-post-2.patch
> > $ make ARCH=3Darm CROSS_COMPILE=3Darm-linux-gnueabihf- bcmrpi_defconfig
> > $ make ARCH=3Darm CROSS_COMPILE=3Darm-linux-gnueabihf-
> >=20
> > I get this output:
> >=20
> > kernel/ipipe/core.c: In function =E2=80=98ipipe_probe_kernel_read=E2=80=
=99:
> > kernel/ipipe/core.c:1748:2: error: implicit declaration of function
> > =E2=80=98get_fs=E2=80=99 [-Werror=3Dimplicit-function-declaration]
> >   mm_segment_t old_fs =3D get_fs();
> >   ^
> > kernel/ipipe/core.c:1750:2: error: implicit declaration of function
> > =E2=80=98set_fs=E2=80=99 [-Werror=3Dimplicit-function-declaration]
> >   set_fs(KERNEL_DS);
> >   ^
> > kernel/ipipe/core.c:1750:9: error: =E2=80=98KERNEL_DS=E2=80=99 undeclar=
ed (first
> > use in this function)
> >   set_fs(KERNEL_DS);
> >          ^
> > kernel/ipipe/core.c:1750:9: note: each undeclared identifier is
> > reported only once for each function it appears in
> > kernel/ipipe/core.c:1753:2: error: implicit declaration of function
> > =E2=80=98__copy_from_user_inatomic=E2=80=99 [-Werror=3Dimplicit-functio=
n-declaration]
> >   ret =3D __copy_from_user_inatomic(dst,
> >   ^
> > kernel/ipipe/core.c: In function =E2=80=98ipipe_probe_kernel_write=E2=
=80=99:
> > kernel/ipipe/core.c:1767:9: error: =E2=80=98KERNEL_DS=E2=80=99 undeclar=
ed (first
> > use in this function)
> >   set_fs(KERNEL_DS);
> >          ^
> > kernel/ipipe/core.c:1770:2: error: implicit declaration of function
> > =E2=80=98__copy_to_user_inatomic=E2=80=99 [-Werror=3Dimplicit-function-=
declaration]
> >   ret =3D __copy_to_user_inatomic((__force void __user *)dst, src,
> > size);
>=20
> This part of the code is compiled conditionally if CONFIG_KGDB is
> enabled. Have you tried turning KGDB off? Chances are, nobody ever
> tried running Xenomai with KGDB on ARM, so, I doubt it has any
> chance to work anyway.
>=20

It stopped compiling asking to disable CC_STACKPROTECTOR. It now
compiles, but it doesn't boot, and also doesn't give much information.
Let's see if I can figure out this one.

Thanks!
Marc