llvm dev - May 2010 - [LLVMdev] How to build a cross llvm-gcc compiler for Arm Cortex-A8

hi
      My host is Linux on x86, and I want llvm-gcc generate code for Arm
Cortex-A8.
      I saw that in LLVM 2.7 Release Notes, but I can't find step to build
it. Anyone tell me?
llvm-gcc now has complete support for the ARM v7 NEON instruction set. This
support differs slightly from the GCC implementation. Please see the ARM
Advanced SIMD (NEON) Intrinsics and Types in LLVM Blog
Post<http://blog.llvm.org/2010/04/arm-advanced-simd-neon-intrinsics-and.html>
for
helpful information if migrating code from GCC to LLVM-GCC

Thank you all

-Liu
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Hello
>       My host is Linux on x86, and I want llvm-gcc generate code for Arm
> Cortex-A8.
>       I saw that in LLVM 2.7 Release Notes, but I can't find step to
build
> it. Anyone tell me?
Build llvm-gcc exactly the same way you're building the cross gcc for
your target.

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

I do it like this:
export PATH=/opt/arm-2010q1/bin/:$PATH
../llvm-gcc-4.2-2.7.source/configure --prefix=/opt/llvm
--enable-languages=c,c++  --enable-checking --enable-llvm=/root/llvm-obj
--disable-bootstrap --disable-multilib --target=arm-none-linux-gnueabi
--enable-cross --with-as=/opt/arm-2010q1/arm-none-linux-gnueabi/bin/as
--with-ld=/opt/arm-2010q1/arm-none-linux-gnueabi/bin/ld
make
it gets error:
/opt/arm-2010q1/arm-none-linux-gnueabi/bin/ld: crti.o: No such file: No such
file or directory
collect2: ld returned 1 exit status

I copy arm-linux's crti.o and crtn.o there. It gets another error:
/root/llvm-gcc-obj/./gcc/crti.o: In function `_init':
/home/oe/stuff/workspace/work/armv7a-angstrom-linux-gnueabi/glibc-2.9-r36.3/build-arm-angstrom-linux-gnueabi/nptl/crti.S:37:
undefined reference to `__pthread_initialize_minimal_internal'
/opt/arm-2010q1/arm-none-linux-gnueabi/bin/ld: ./libgcc_s.so.1.tmp: hidden
symbol `__pthread_initialize_minimal_internal' isn't defined
/opt/arm-2010q1/arm-none-linux-gnueabi/bin/ld: final link failed:
Nonrepresentable section on output
collect2: ld returned 1 exit status



2010/5/7 Anton Korobeynikov <anton at korobeynikov.info>
> Hello
>
> >       My host is Linux on x86, and I want llvm-gcc generate code for
Arm
> > Cortex-A8.
> >       I saw that in LLVM 2.7 Release Notes, but I can't find step
to
> build
> > it. Anyone tell me?
> Build llvm-gcc exactly the same way you're building the cross gcc for
> your target.
>
> --
> With best regards, Anton Korobeynikov
> Faculty of Mathematics and Mechanics, Saint Petersburg State University
>
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