Re: Xscale big endian tool-chain (how to build it?)

[Richard Earnshaw <rearnsha at arm dot com>]

On Tue, 2006-01-03 at 17:15, Karel Gardas wrote:

> I have tried this with binutils 2.16.1 and gcc 4.0.1, but w/o success. The 
> failure happen during compilation of gcc and it looks like:
> 
> /tmp/arm-elf-build/obj-gcc/gcc/xgcc -B/tmp/arm-elf-build/obj-gcc/gcc/ 
> -nostdinc -B/tmp/arm-elf-build/obj-gcc/arm-elf/newlib/ -isystem 
> /tmp/arm-elf-build/obj-gcc/arm-elf/newlib/targ-include -isystem 
> /tmp/arm-elf-build/gcc-4.0.1/newlib/libc/include 
> -B/home/karel/usr/local/arm-elf1/arm-elf/bin/ 
> -B/home/karel/usr/local/arm-elf1/arm-elf/lib/ -isystem 
> /home/karel/usr/local/arm-elf1/arm-elf/include -isystem 
> /home/karel/usr/local/arm-elf1/arm-elf/sys-include -O2  -DIN_GCC 
> -DCROSS_COMPILE   -W -Wall -Wwrite-strings -Wstrict-prototypes 
> -Wmissing-prototypes -Wold-style-definition  -isystem ./include 
> -Dinhibit_libc -fno-inline -g  -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED 
> -Dinhibit_libc -I. -I. -I../../gcc-4.0.1/gcc -I../../gcc-4.0.1/gcc/. 
> -I../../gcc-4.0.1/gcc/../include -I../../gcc-4.0.1/gcc/../libcpp/include 
> -mhard-float -DL_addsubdf3 -xassembler-with-cpp -c 
> ../../gcc-4.0.1/gcc/config/arm/lib1funcs.asm -o libgcc/fpu/_addsubdf3.o
> ../../gcc-4.0.1/gcc/config/arm/ieee754-df.S: Assembler messages:
> ../../gcc-4.0.1/gcc/config/arm/ieee754-df.S:454: Error: selected processor does not support `mvfeqd f0,#0.0'
> ../../gcc-4.0.1/gcc/config/arm/ieee754-df.S:476: Error: selected processor does not support `mvfeqd f0,#0.0'
> ../../gcc-4.0.1/gcc/config/arm/ieee754-df.S:530: Error: selected processor does not support `ldfd f0,[sp],#8'
> make[2]: *** [libgcc/fpu/_addsubdf3.o] Error 1
> make[2]: Leaving directory `/tmp/arm-elf-build/obj-gcc/gcc'
> make[1]: *** [stmp-multilib] Error 2
> make[1]: Leaving directory `/tmp/arm-elf-build/obj-gcc/gcc'
> make: *** [all-gcc] Error 2
> 
> First of all, I've thought this is because of my original binutils 
> binaries configured with out --with-cpu=xscale, but even if I add this 
> configure switch and rebuild them, the issue is still the same. Perhaps, 
> my bintutils config is still wrong? But I'm short of ideas what to do 
> now...
> 
> Thanks!
> Karel
> PS: in gcc/config/arm/t-arm-elf I only uncommented those options to get BE 
> build:
> 
> MULTILIB_OPTIONS     += mlittle-endian/mbig-endian
> MULTILIB_DIRNAMES    += le be
> MULTILIB_MATCHES     += mbig-endian=mbe mlittle-endian=mle
> 
> MULTILIB_OPTIONS    += mhard-float/msoft-float
> MULTILIB_DIRNAMES   += fpu soft
> MULTILIB_EXCEPTIONS += *mthumb/*mhard-float*
> 
> MULTILIB_OPTIONS    += mno-thumb-interwork/mthumb-interwork
> MULTILIB_DIRNAMES   += normal interwork

You don't need the hard/soft float variants.  Just comment them out (the
middle group).

R.