Date: Thu, 17 Apr 2014 06:44:33 -0600 From: Ian Lepore <ian@FreeBSD.org> To: Mark R V Murray <mark@grondar.org> Cc: Tim Kientzle <tim@kientzle.com>, freebsd-arm <freebsd-arm@FreeBSD.org> Subject: Re: Building an ARM/RPI-B release (hacked) on CURRENT/AMD64. Message-ID: <1397738673.1124.153.camel@revolution.hippie.lan> In-Reply-To: <4B9FEF94-9912-4861-9FE2-E8EC7BE3509C@grondar.org> References: <9FDD6F0E-B2A9-48D9-A3E4-181868995FDA@grondar.org> <EC41E53F-96EF-4652-9A02-D49448D104BE@kientzle.com> <4B9FEF94-9912-4861-9FE2-E8EC7BE3509C@grondar.org>
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On Thu, 2014-04-17 at 08:23 +0100, Mark R V Murray wrote:
> On 17 Apr 2014, at 02:25, Tim Kientzle <tim@kientzle.com> wrote:
>
> >> The problem is that during the u-boot build, a CLANG-based xdev build is used, and this has no *-gcc, only a *-cc. If I fix that with a symlink, clang then objects to the -ffixed-r8 option. Clang has an equivalent -ffixed-r9, but the u-boot that is mandated for FreeBSD/Arm/RPI use doesn˙t have the R9 fix.
> >>
> >> Questions:
> >>
> >> 1) Are you aware of any of this?
> >
> > Yes.
> >
> >>
> >> 2) Do you have a quick fix idea (preferably not involving GCC)?
> >
> > No. <sigh>
> >
> > Right now, the ´get it workingˇ answer is to install GCC XDEV tools.
>
> Even that was broken, but I have it fixed now, locally. I˙ll tidy up the patches and send them all out later.
>
> > Though I tried that on a clean system last weekend and it
> > still failed to build. Haven˙t tracked down why.
>
> src/release/arm/release.sh needs this:
>
> @@ -96,27 +96,27 @@
> # This is not '-j'-safe, so force '-j1' to allow using
> # additional, non-'-j' options specified in WORLD_FLAGS.
> eval chroot ${CHROOTDIR} make -C /usr/src/gnu/usr.bin/cc \
> - WITH_GCC=1 ${WORLD_FLAGS} -j1 obj depend all install
> + WITH_GCC=1 WITH_GNUXX=1 ${WORLD_FLAGS} -j1 obj depend all install
> # Build the 'xdev' target for crochet.
> - eval chroot ${CHROOTDIR} make -C /usr/src WITHOUT_CLANG_IS_CC=1 \
> - XDEV=${XDEV} XDEV_ARCH=${XDEV_ARCH} WITH_GCC=1 \
> + eval chroot ${CHROOTDIR} make -C /usr/src WITHOUT_CLANG_IS_CC=1 WITHOUT_CLANG=1 \
> + XDEV=${XDEV} XDEV_ARCH=${XDEV_ARCH} WITH_GCC=1 WITH_GNUXX=1 \
> ${WORLD_FLAGS} xdev
>
WITH_GNUXX doesn't seem right, shouldn't that be WITH_GNUCXX? If you
generated that with diff rather than typing from memory, then maybe that
port of the change isn't what fixes things and only WITH_GCC is needed.
> # Run the ldconfig(8) startup script so /var/run/ld-elf*.so.hints
> # is created.
>
> >> I˙m rather short of time right now, but may be able to get to this over Easter.
> >
> > Long-term, we˙d all like to see U-Boot build with clang.
> >
> > No idea yet whether that˙s hard or not. No idea if
> > I˙ll have time to work on it in the near future.
>
> How much hacking does u-boot need for 1) FreeBSD and 2) RPI?
>
> Should its head-of-trunk ´just workˇ? They have apparently sorted out the R8/R9 business which should make it CLANG-ready, IIUC.
>
> M
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