Re: [Chicken-users] cross-chicken for m68k-elf

[felix winkelmann]

On 5/28/07, Lev Shamardin <address@hidden> wrote:
> Hi all,
>
> I'm trying to compile the cross-chicken for the m68k-elf platform (for a clone
> of uCDimm if you bother) using the instructions from
> http://chicken.wiki.br/cross%20compilation, but I get the following error trying
> to build either 'native' or 'cross' versions:
>
> [...skipped...]
> m68k-elf-gcc -DHAVE_CONFIG_H -I. -I../chicken-2.613 -I. -DC_BUILDING_LIBCHICKEN
> -Ipcre -DSUPPORT_UTF8 -DSUPPORT_UCP -DPCRE_STATIC -Os -g -fomit-frame-pointer
> -m68000 -DCONFIG_LINEO -Dlinux -D__linux__ -Dunix -D__uClinux__ -DEMBED
> -D__USE_BSD -I/home/sunpos/uClinux-dist/lib/uClibc/include
> -I/home/sunpos/uClinux-dist/lib/libm
> -I/home/sunpos/uClinux-dist/lib/libcrypt_old -I/home/sunpos/uClinux-dist
> -I./include -I/home/sunpos/uClinux-dist/sunyard/include
> -I/home/sunpos/uClinux-dist/linux-2.4.x/include -fno-builtin -msep-data
> -DC_ENABLE_PTABLES -c ../chicken-2.613/runtime.c -o libchicken_la-runtime.o
> In file included from ../chicken-2.613/runtime.c:134:
> chicken-config.h:25: warning: `C_STACK_GROWS_DOWNWARD' redefined
> ../chicken-2.613/chicken.h:144: warning: this is the location of the previous
> definition
> /tmp/ccaTtfAl.s: Assembler messages:
> /tmp/ccaTtfAl.s:44537: Fatal error: Tried to convert PC relative conditional
> branch to absolute jump
> gmake[1]: *** [libchicken_la-runtime.lo] Error 1
> gmake[1]: Leaving directory `/home/sunpos/cross-chicken/build'
> make: *** [all] Error 2
>
> Any clues how to fix this?

No. I haven't had any success yet compiling for uClinux myself (but haven't
tried very hard and don't have much experience with it).

That the assembler aborts doesn't really look too good. Is there some
gcc option to emit "long" jumps (assuming there is some range problem)?
Try to remove the optimization flags (-Os -fomit-frame-pointer) from CFLAGS.
The STACK_GROWS_DOWNWARD warning can be ignored.


cheers,
felix