Re: [ECOS] JFFS2 on ARM target

[Jürgen Lambrecht <Jurgen dot Lambrecht at tiscali dot be>]

I had the same problem with JFFS2 on my ARM target, and I also do not get the error message about a broken compiler.
I use an Atmel ARM7 AT91M55800A (on eb55 demo board), an arm7tdmi.
As you request below:

$ arm-elf-gcc -v
Reading specs from /opt/ecos/gnutools/arm-elf/bin/../lib/gcc-lib/arm-elf/3.2.1/specs
Configured with: /local/demonweb/tools/ecos-gnutools-v1.4/r2/arm-elf/cygwin/tar_bz2/source/gcc-3.2.1
/configure --target=arm-elf --prefix=/local/demonweb/tools/ecos-gnutools-v1.4/r2/arm-elf/cygwin/tar_
bz2/opt/ecos/gnutools/arm-elf --enable-languages=c,c++ --with-gnu-as --with-gnu-ld --with-newlib --w
ith-gxx-include-dir=/local/demonweb/tools/ecos-gnutools-v1.4/r2/arm-elf/cygwin/tar_bz2/opt/ecos/gnut
ools/arm-elf/arm-elf/include
Thread model: single
gcc version 3.2.1

with ' arm-elf-gcc -dumpspecs', I get amongs others this output:

*cpp_cpu_arch:
-Acpu=arm -Amachine=arm %{march=arm2:-D__ARM_ARCH_2__} %{march=arm250:-D__ARM_ARCH_2__} %{march=arm3
:-D__ARM_ARCH_2__} %{march=arm6:-D__ARM_ARCH_3__} %{march=arm600:-D__ARM_ARCH_3__} %{march=arm610:-D
__ARM_ARCH_3__} %{march=arm7:-D__ARM_ARCH_3__} %{march=arm700:-D__ARM_ARCH_3__} %{march=arm710:-D__A
RM_ARCH_3__} %{march=arm720:-D__ARM_ARCH_3__} %{march=arm7100:-D__ARM_ARCH_3__} %{march=arm7500:-D__
ARM_ARCH_3__} %{march=arm7500fe:-D__ARM_ARCH_3__} %{march=arm7m:-D__ARM_ARCH_3M__} %{march=arm7dm:-D
__ARM_ARCH_3M__} %{march=arm7dmi:-D__ARM_ARCH_3M__} %{march=arm7tdmi:-D__ARM_ARCH_4T__} %{march=arm8
:-D__ARM_ARCH_4__} %{march=arm810:-D__ARM_ARCH_4__} %{march=arm9:-D__ARM_ARCH_4T__} %{march=arm920:-
D__ARM_ARCH_4__} %{march=arm920t:-D__ARM_ARCH_4T__} %{march=arm9tdmi:-D__ARM_ARCH_4T__} %{march=stro
ngarm:-D__ARM_ARCH_4__} %{march=strongarm110:-D__ARM_ARCH_4__} %{march=strongarm1100:-D__ARM_ARCH_4_
_} %{march=xscale:-D__ARM_ARCH_5TE__} %{march=xscale:-D__XSCALE__} %{march=armv2:-D__ARM_ARCH_2__} %
{march=armv2a:-D__ARM_ARCH_2__} %{march=armv3:-D__ARM_ARCH_3__} %{march=armv3m:-D__ARM_ARCH_3M__} %{
march=armv4:-D__ARM_ARCH_4__} %{march=armv4t:-D__ARM_ARCH_4T__} %{march=armv5:-D__ARM_ARCH_5__} %{ma
rch=armv5t:-D__ARM_ARCH_5T__} %{march=armv5e:-D__ARM_ARCH_5E__} %{march=armv5te:-D__ARM_ARCH_5TE__}
%{!march=*:  %{mcpu=arm2:-D__ARM_ARCH_2__}  %{mcpu=arm250:-D__ARM_ARCH_2__}  %{mcpu=arm3:-D__ARM_ARC
H_2__}  %{mcpu=arm6:-D__ARM_ARCH_3__}  %{mcpu=arm600:-D__ARM_ARCH_3__}  %{mcpu=arm610:-D__ARM_ARCH_3
__}  %{mcpu=arm7:-D__ARM_ARCH_3__}  %{mcpu=arm700:-D__ARM_ARCH_3__}  %{mcpu=arm710:-D__ARM_ARCH_3__}
  %{mcpu=arm720:-D__ARM_ARCH_3__}  %{mcpu=arm7100:-D__ARM_ARCH_3__}  %{mcpu=arm7500:-D__ARM_ARCH_3__
}  %{mcpu=arm7500fe:-D__ARM_ARCH_3__}  %{mcpu=arm7m:-D__ARM_ARCH_3M__}  %{mcpu=arm7dm:-D__ARM_ARCH_3
M__}  %{mcpu=arm7dmi:-D__ARM_ARCH_3M__}  %{mcpu=arm7tdmi:-D__ARM_ARCH_4T__}  %{mcpu=arm8:-D__ARM_ARC
H_4__}  %{mcpu=arm810:-D__ARM_ARCH_4__}  %{mcpu=arm9:-D__ARM_ARCH_4T__}  %{mcpu=arm920:-D__ARM_ARCH_
4__}  %{mcpu=arm920t:-D__ARM_ARCH_4T__}  %{mcpu=arm9tdmi:-D__ARM_ARCH_4T__}  %{mcpu=strongarm:-D__AR
M_ARCH_4__}  %{mcpu=strongarm110:-D__ARM_ARCH_4__}  %{mcpu=strongarm1100:-D__ARM_ARCH_4__}  %{mcpu=x
scale:-D__ARM_ARCH_5TE__}  %{mcpu=xscale:-D__XSCALE__}  %{!mcpu*:%(cpp_cpu_arch_default)}}

*cpp_cpu_arch_default:
-D__ARM_ARCH_4T__


Kind regards,
Jürgen Lambrecht


Andrew Lunn wrote:
> On Thu, Mar 09, 2006 at 11:27:02AM -0500, Doyle, Patrick wrote:
>
> > > -----Original Message-----
> > > From: Andrew Lunn [mailto:andrew@lunn.ch] 
> > > Sent: Wednesday, March 08, 2006 4:58 PM
> > > To: Doyle, Patrick
> > > Cc: ecos-discuss@ecos.sourceware.org
> > > Subject: Re: [ECOS] JFFS2 on ARM target
> > >
> > > packages/fs/jffs2/current/src/fs-ecos.c:24
> > >
> > > #if (__GNUC__ == 3) && (__GNUC_MINOR__ == 2) && defined 
> > > (__ARM_ARCH_4__)
> > > #error This compiler is known to be broken. Please see:
> > > #error 
> > > http://ecos.sourceware.org/ml/ecos-patches/2003-08/msg00006.html
> > > #endif
> > >
> > > 2003-09-23  Andrew Lunn  <andrew.lunn@ascom.ch>
> > >
> > >        * src/fs-ecos.c: Added test to detect known broken 
> > > ARM compiler
> > >
> > >        Andrew
> >
> > Thanks Andrew,
> > I'll look at mtd distribution, see if it includes ?yvind's patch, and figure
> > out what to do next based on what I find there.  In the mean time,
> > experimental evidence suggests that the 'defined(__ARM_ARCH_4__)' should be
> > 'defined(__ARM_ARCH_4T_)' in fs-ecos.c.  At least on my system, which
> > compiles fs-ecos.c with the following command:
> >
> > arm-elf-gcc -c  -I/home/wpd/ess/redboot/dbw-redboot-ram/install/include
> > -I/home/wpd/eCos/ecos-20060228/packages/fs/jffs2/current
> > -I/home/wpd/eCos/ecos-20060228/packages/fs/jffs2/current/src
> > -I/home/wpd/eCos/ecos-20060228/packages/fs/jffs2/current/tests -I.
> > -I/home/wpd/eCos/ecos-20060228/packages/fs/jffs2/current/src/
> > -finline-limit=7000 -mcpu=arm9 -Wall -Wpointer-arith -Wstrict-prototypes
> > -Winline -Wundef  -g -O2 -ffunction-sections -fdata-sections
> > -fno-exceptions   -D__ECOS -nostdinc -iwithprefix include
> > -Wp,-MD,src/fs-ecos.tmp -o src/fs_jffs2_fs-ecos.o
> > /home/wpd/eCos/ecos-20060228/packages/fs/jffs2/current/src/fs-ecos.c
>
>
> Strange, it works for me. I wounder if its becasue you are using arm9?
>
> Please could you give the output when you call gcc with -v. I think
> that will show all the defines which are passed to CPP.
>
>         Thanks
>                 Andrew

--
Jürgen Lambrecht
Diksmuidse Heerweg 338
8200 Sint-Andries
Tel: +32 (0)50 842901
GSM: +32 (0)476 313389

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