llvm dev - May 2010 - [LLVMdev] linker errors when trying to link llvm-gcc

I am trying to build a cross compiler for arm on linux, here is how i
have configured it

cd llvm-gcc-4.2-2.7.source-objtree

../llvm-gcc-4.2-2.7.source/configure
--enable-llvm=/home/anatolyy/qctp406/pakman/depot/users/anatolyy/proto/crosscompiler/llvm-2.7
--enable-multilib --enable-target-optspace --enable-interwork
--with-newlib --with-gnu-as --with-gnu-ld --enable-languages=c,c++
--target=arm-elf
--prefix=/home/anatolyy/qctp406/pakman/depot/users/anatolyy/proto/crosscompiler/arm-elf

i've been able to build vanila gcc 4.2 to 4.5 using this configuration
for arm, but not llvm.  So i deleted my tree and tried again and i got
these errors now:


../../llvm-gcc-4.2-2.7.source/gcc/config/arm/lib1funcs.asm: Assembler messages:
../../llvm-gcc-4.2-2.7.source/gcc/config/arm/lib1funcs.asm:1004:
Error: backward ref to unknown label "8:"


Thanks,
Anatoly

On Mon, May 24, 2010 at 12:52 PM, Duncan Sands <baldrick at free.fr>
wrote:
> Hi Anatoly,
>
>> any ideas what library has these symbols
>>
>> lang_eh_catch_all
>> get_pointer_alignment
>> validate_arglist
>
> it sounds like you are trying to build a version of llvm-gcc without LLVM
> enabled.  Did you specify --enable-llvm=path_to_llvm_build_directory when
> configuring llvm-gcc?  These symbols are all defined in llvm-gcc itself,
> but only when ENABLE_LLVM is defined.  This suggests to me that you somehow
> configured llvm-gcc wrong.
>
> Ciao,
>
> Duncan.
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>

> ../llvm-gcc-4.2-2.7.source/configure
>
--enable-llvm=/home/anatolyy/qctp406/pakman/depot/users/anatolyy/proto/crosscompiler/llvm-2.7
> --enable-multilib --enable-target-optspace --enable-interwork
> --with-newlib --with-gnu-as --with-gnu-ld --enable-languages=c,c++
> --target=arm-elf
This means that the compiler is built for ARMv4 which is not pretty
good supported.
Try to switch to ARMv7, e.g. adding --with-cpu=cortex-a8. Also, LLVM
might not support interworking yet, so it's worth to remove this
option as well.

-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University

thanks, that worked, also interworking built without problems.  i
haven't tested an elf with it yet though.

On Tue, May 25, 2010 at 12:46 PM, Anton Korobeynikov
<anton at korobeynikov.info> wrote:
>> ../llvm-gcc-4.2-2.7.source/configure
>>
--enable-llvm=/home/anatolyy/qctp406/pakman/depot/users/anatolyy/proto/crosscompiler/llvm-2.7
>> --enable-multilib --enable-target-optspace --enable-interwork
>> --with-newlib --with-gnu-as --with-gnu-ld --enable-languages=c,c++
>> --target=arm-elf
> This means that the compiler is built for ARMv4 which is not pretty
> good supported.
> Try to switch to ARMv7, e.g. adding --with-cpu=cortex-a8. Also, LLVM
> might not support interworking yet, so it's worth to remove this
> option as well.
>
> --
> With best regards, Anton Korobeynikov
> Faculty of Mathematics and Mechanics, Saint Petersburg State University
>