According http://marc.info/?l=glibc-alpha&m=106734995615477&w=2 to fix my code.
2013-04-25
Add following new function

+cd $Location/glibc-2.2.3_build
+sed 's!AR =!AR = '$PREFIX'/bin/arm-linux-ar #!g' -i $Location/glibc-2.2.3_build/config.make
+sed 's!CFLAGS =!CFLAGS = -O2 -fno-inline -D_FORTIFY_SOURCE=1!g' -i $Location/glibc-2.2.3_build/config.make