Re: iWMMXt Linux EABI cross toolchain (an update)

[Steven Newbury <s_j_newbury at yahoo dot co dot uk>]

After taking a little break to work on other things I've made a lot of progress
getting this to work, although I'm not there yet.

My stage1 gcc build is/was ok both for trunk (4.2.0) and 4.1.0.  However to get
glibc to build with NPTL I had to overide a couple of configure tests since
they were attempting to link against crti.o which hadn't yet been built:

 libc_cv_c_cleanup=yes  libc_cv_forced_unwind=yes

So I now have glibc 2.4 built with NPTL/TLS support for
arm-iwmmxt-linux-gnueabi, time to rebuild the compiler:

After doing well it fails linking libgcc:

bpabi_s.o libgcc/./unaligned-funcs_s.o libgcc/./unwind-arm_s.o
libgcc/./libunwind_s.o libgcc/./pr-support_s.o libgcc/./unwind-c_s.o -lc && rm
-f ./libgcc_s.so && if [ -f ./libgcc_s.so.1 ]; then mv -f ./libgcc_s.so.1
./libgcc_s.so.1.backup; else true; fi && mv ./libgcc_s.so.1.tmp ./libgcc_s.so.1
&& ln -s libgcc_s.so.1 ./libgcc_s.so
libgcc/./_addsub_sf_s.o: In function
`__subsf3':/var/tmp/portage/gcc-4.2.0_alpha20060317/work/build/gcc/fp-bit.c:766:
multiple definition of `__subsf3'
libgcc/./_addsubsf3_s.o:/var/tmp/portage/gcc-4.2.0_alpha20060317/work/gcc-4.2-20060317/gcc/config/arm/ieee754-sf.S:64:
first defined here
/usr/arm-iwmmxt-linux-gnueabi/bin/ld: Warning: size of symbol `__subsf3'
changed from 404 in libgcc/./_addsubsf3_s.o to 88 in libgcc/./_addsub_sf_s.o
libgcc/./_addsub_sf_s.o: In function
`__addsf3':/var/tmp/portage/gcc-4.2.0_alpha20060317/work/build/gcc/fp-bit.c:746:
multiple definition of `__addsf3'
libgcc/./_addsubsf3_s.o:/var/tmp/portage/gcc-4.2.0_alpha20060317/work/gcc-4.2-20060317/gcc/config/arm/ieee754-sf.S:73:
first defined here
/usr/arm-iwmmxt-linux-gnueabi/bin/ld: Warning: size of symbol `__addsf3'
changed from 400 in libgcc/./_addsubsf3_s.o to 76 in libgcc/./_addsub_sf_s.o
libgcc/./_mul_sf_s.o: In function `__mulsf3':/var/tmp/portage/

...etc

I've been staring at this for too long; obviously something is getting wrongly
included somewhere or isn't properly defined for the ieee754... it could be
something I've done.. I have had to "fix" a few things as I've gone along...
 ...anybody??


Steve


		
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