# cd /usr/local/iphone-sysroot/usr/include
# ln -s /usr/local/iphone-sysroot/usr/include/arm/endian.h .

# rm stdarg.h
# ln -s /usr/local/lib/gcc/arm-apple-darwin9/4.2.1/include/stdarg.h .

# rm float.h
# ln -s /usr/local/lib/gcc/arm-apple-darwin9/4.2.1/include/float.h .

# rm varargs.h
# ln -s /usr/local/lib/gcc/arm-apple-darwin9/4.2.1/include/varargs.h .

（#include_nextが正しく動作しないようなので、仕方なく）