LLVM/Clang now builds for Cortex-M3?

llvm

cd llvm
git clone http://llvm.org/git/llvm.git

cd llvm/tools
git clone http://llvm.org/git/clang.git

cd llvm/projects
git clone http://llvm.org/git/compiler-rt.git

cd ../llvm-build/
../llvm/configure --prefix=$(HOME)/bin/llvm
--exec-prefix=$(HOME)/bin/llvm  --enable-targets=x86_64,arm,cpp
--enable-optimized

make
make install

clang -v
clang++ -ccc-gcc-name arm-none-linux-gnueabi-g++ -ccc-host-triple
thumbv7m-none-gnueabi testReference.cpp -c

It seems like it worked.

$ arm-none-linux-gnueabi-objdump -D --section=.text testReference.o

testReference.o:     file format elf32-littlearm

Disassembly of section .text:

00000000 <main>:
   0:   e92d4800        push    {fp, lr}
   4:   e1a0b00d        mov     fp, sp
   8:   e24dd030        sub     sp, sp, #48     ; 0x30

https://gist.github.com/jsnyder/1108326