From: Gustavo Zacarias <gustavo@zacarias.com.ar>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH 8/9] blackfin: set GNU_TARGET_NAME accordingly
Date: Sun, 21 Jul 2013 13:32:05 -0300 [thread overview]
Message-ID: <51EC0D05.7010204@zacarias.com.ar> (raw)
In-Reply-To: <20130721173845.15f7da05@skate>
On 07/21/2013 12:38 PM, Thomas Petazzoni wrote:
> Isn't the 'uclinux' OS part something that is not specific to Blackfin?
> I.e, should this rather be something like:
>
> ifeq ($(BR2_USE_MMU),y)
> OS=linux
> else
> OS=uclinux
> endif
In theory, yes.
For blackfin, doesn't seem so.
Seems (caveat: no access to blackfin.uclinux.org IF it's even
documented, bizarre patches and so on) that for blackfin being MMU-less
across the whole arch it's used to select from FDPIC and FLAT*.
Again going to the source (gcc to be precise) we see that crtreloc.o
(for FDPIC targets) is used in gcc/config/bfin/linux.h (linux tuple),
and crtlibid (for FLAT targets, internal to gcc) is used in
gcc/config/bfin/uclinux.h
crtreloc.o is generated by uClibc only when doing FDPIC, and used by
'linux', and 'uclinux' doesn't do FDPIC (no linking with crtreloc.o)
hence FLAT.
Regards.
next prev parent reply other threads:[~2013-07-21 16:32 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-20 12:52 [Buildroot] [PATCH 0/9] Fix internal blackfin toolchain Gustavo Zacarias
2013-07-20 12:52 ` [Buildroot] [PATCH 1/9] gcc/bfin: doesn't support --with-cpu defaults Gustavo Zacarias
2013-07-21 15:35 ` Thomas Petazzoni
2013-07-21 16:26 ` Gustavo Zacarias
2013-07-20 12:52 ` [Buildroot] [PATCH 2/9] uclibc/bfin: only supports linuxthreads.old Gustavo Zacarias
2013-07-20 12:58 ` Yann E. MORIN
2013-07-27 14:21 ` Thomas Petazzoni
2013-07-20 12:52 ` [Buildroot] [PATCH 3/9] uclibc: make target utils optional Gustavo Zacarias
2013-07-20 13:08 ` Yann E. MORIN
2013-07-20 12:52 ` [Buildroot] [PATCH 4/9] gcc/bfin: 4.{6,7,8}.x are broken Gustavo Zacarias
2013-07-20 12:52 ` [Buildroot] [PATCH 5/9] uclibc: use builtin startfiles target Gustavo Zacarias
2013-07-20 12:52 ` [Buildroot] [PATCH 6/9] uclibc/bfin: set the appropiate binfmt in the configuration Gustavo Zacarias
2013-07-20 12:52 ` [Buildroot] [PATCH 7/9] uclibc/bfin: don't install host utils if not FDPIC Gustavo Zacarias
2013-07-20 12:52 ` [Buildroot] [PATCH 8/9] blackfin: set GNU_TARGET_NAME accordingly Gustavo Zacarias
2013-07-21 15:38 ` Thomas Petazzoni
2013-07-21 16:32 ` Gustavo Zacarias [this message]
2013-07-27 14:22 ` Thomas Petazzoni
2013-07-20 12:52 ` [Buildroot] [PATCH 9/9] gcc/mudflap: disable for blackfin, it doesn't build Gustavo Zacarias
2013-07-27 14:23 ` [Buildroot] [PATCH 0/9] Fix internal blackfin toolchain Thomas Petazzoni
2013-07-27 14:35 ` Gustavo Zacarias
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