request for assistance in using binutils to link a .o which was cross-compiled to mips64 using Clang/LLVM

[Daniel Wilkerson <daniel dot wilkerson at gmail dot com>]

I wonder if I may trouble you with what I am sure is a simple linking
question for someone who is not a beginner at linking internals such
as myself.

I am attempting to cross-compile to MIPS64 on an Ubuntu x86 machine.
Here is my input file, zero.c:

    int main() {
      return 0;
    }

With some help from the LLVM people, I can now compile and assemble a
.o file as follows:

clang -o zero.o -target mips64 -integrated-as -c  -Wall -Wextra
-Werror -O0 -g zero.c

file zero.o
zero.o: ELF 64-bit MSB  relocatable, MIPS, MIPS64 version 1 (SYSV), not stripped

I configured and built binutils-2.24 (attempting to integrate with
gcc) as follows:

../binutils-2.24/configure --target=mips64 --prefix=/home/dsw/gcc-4.8.3-mips64

An now attempting to link the above-generated .o:

/home/dsw/gcc-4.8.3-mips64/bin/mips64-ld -o zero zero.o
/home/dsw/gcc-4.8.3-mips64/bin/mips64-ld: zero.o: ABI is incompatible
with that of the selected emulation
/home/dsw/gcc-4.8.3-mips64/bin/mips64-ld: failed to merge target
specific data of file zero.o
/home/dsw/gcc-4.8.3-mips64/bin/mips64-ld: warning: cannot find entry
symbol _start; defaulting to 0000000000400000
make: *** [zero] Error 1

I thought perhaps running the linker through the cross-compiled gcc
might help in some way, but no:

/home/dsw/gcc-4.8.3-mips64/bin/mips64-gcc -o zero zero.o
/home/dsw/gcc-4.8.3-mips64/lib/gcc/mips64/4.8.3/../../../../mips64/bin/ld:
zero.o: ABI is incompatible with that of the selected emulation
/home/dsw/gcc-4.8.3-mips64/lib/gcc/mips64/4.8.3/../../../../mips64/bin/ld:
failed to merge target specific data of file zero.o
/home/dsw/gcc-4.8.3-mips64/lib/gcc/mips64/4.8.3/../../../../mips64/bin/ld:
warning: cannot find entry symbol _start; defaulting to
0000000000400028
collect2: error: ld returned 1 exit status
make: *** [zero] Error 1

Feel free to point me to the documentation that I should have read
before bothering you.

Daniel