From Ellcc

Directory Structure

.../ellcc/newlib
.../ellcc/newlib/src                The newlib sources.
.../ellcc/newlib/obj                The newlib build directory.
.../ellcc/newlib/obj/host           The host library build directory/
.../ellcc/newlib/obj/arm-elf        The arm-elf library build directory.

Building the Host newlib

cd obj/host
../../src/configure --with-newlib

Building a Target newlib

cd obj/arm-elf
../../src/configure --target=arm-elf CC_FOR_TARGET=/home/rich/ellcc/ellcc/arm-elf-ecc