Re: coldfire and soft-float

[Luigi 'Comio' Mantellini <luigi dot mantellini at idf-hit dot com>]

On gio, 2008-06-19 at 11:27 +0200, Luigi 'Comio' Mantellini wrote:
> On gio, 2008-06-19 at 12:23 +0300, Kai Ruottu wrote:
> > Luigi 'Comio' Mantellini wrote:
> > 
> > > Kay, Thanks for your support.
> > > 
> > > this is the config.gcc (part of):
> > > 
> ....
> 
> > > 
> > > The target m68k-*-linux* doesn't set any tmake_file... I think that ïthe
> > > following should be added :
> > > 
> > >         tmake_file="m68k/t-floatlib m68k/t-mlibs m68k/t-m68kbare"

I modified this to:

    tmake_file="${tmake_file} m68k/t-floatlib m68k/t-linux m68k/t-mlibs"

and the compilation seems to be ok...

Now I'm this error in Kernel building:

kernel/built-in.o: In function `timespec_add_ns':
/mnt/devel/openwrt/OpenWRT.git/build_dir/linux-cf547x/linux-2.6.23/include/linux/time.h:177: undefined reference to `__umoddi3'
/mnt/devel/openwrt/OpenWRT.git/build_dir/linux-cf547x/linux-2.6.23/include/linux/time.h:177: undefined reference to `__udivdi3'
make[5]: *** [.tmp_vmlinux1] Error 1
make[5]: Leaving directory `/mnt/devel/openwrt/OpenWRT.git/build_dir/linux-cf547x/linux-2.6.23'
make[4]: *** [/mnt/devel/openwrt/OpenWRT.git/build_dir/linux-cf547x/linux-2.6.23/.image] Error 2
make[4]: Leaving directory `/mnt/devel/openwrt/OpenWRT.git/target/linux/cf547x'
make[3]: *** [install] Error 2
make[3]: Leaving directory `/mnt/devel/openwrt/OpenWRT.git/target/linux'
make[2]: *** [target/linux/install] Error 2
make[2]: Leaving directory `/mnt/devel/openwrt/OpenWRT.git'
make[1]: *** [/mnt/devel/openwrt/OpenWRT.git/staging_dir/m68k/stamp/.target_install] Error 2
make[1]: Leaving directory `/mnt/devel/openwrt/OpenWRT.git'
make: *** [world] Error 2
comio@cartesio:/mnt/devel/openwrt/OpenWRT.git$ cd /mnt/devel/openwrt/OpenWRT.git/build_dir/linux-cf547x/linux-2.6.23/
comio@cartesio:/mnt/devel/openwrt/OpenWRT.git/build_dir/linux-cf547x/linux-2.6.23$ mc

I think that this is an openwrt issue...

thanks again,

luigi


> > 
> > The 'm68020/m68881' and 'mcf5475' seem to be the defaults for Linux but
> > 'm68020/msoft-float' and 'mcf5206' for uClinux... So here we should talk
> > only about those (two) uClinux configurations. The 'oldabi' one or the
> > "new GNU/Linux-style ABI" being needed?
> > 
> > The startups, C library names memory layout ("flat") etc are different
> > between GNU/Linux and "Linux with uClibc" aka uClinux...
> > 
> 
> Are you sure about uClinux = Linux+uClibc? I know (but I can be wrong)
> that uClinux is Linux without MMU. I'm using a full Linux (2.6.23) with
> MMU...
> 
> > Ok, here seems to be a really silly bug, the target name
> > 'm68k-linux-uclibc' isn't using the right (here 'm68k-*-uclinux*')
> > template at all !!! It uses the 'm68k-*-linux*' template which of
> > course is totally wrong :(  Also all the other uClibc systems are
> > expecting the '-uclinux', not the de-facto '-linux-uclibc' target
> > name, only the new 'bfin-*-linux-uclibc' seems to be "updated" to
> > use the new name...
> > 
> 
> Again, this sound strange for me... 
> 
> > When seeing this, I remember there being patches for GCC in the
> > uClibc case which changed these templates. But they never were
> > moved to the GCC sources I think...
> > 
> > So please simply change the first template name to be :
> > 
> > m68k-*-linux-uclibc*)      # Motorola m68k/ColdFire running uClinux
> >                             # with uClibc, using the new GNU/Linux-style
> >                             # ABI.
> > 
> > and then see what you will get !
> 
> 
> Ok. I will try it.
> 
> Thanks a lot,
> 
> luigi
Industrie Dial Face S.p.A.
Luigi Mantellini
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