arm相關工具編譯

busybox
#make menuconfig
#make
#make install

tslib
./autogen.sh
./configure --prefix=$PWD/_install  --host=arm-linux
make
make install


zlib
./configure --prefix=$PWD/_install
修改Makefile 將gcc ar 等改成arm-linux-gcc

libpng
./configure --prefix=$PWD/_install --host=arm-linux LDFLAGS=-L/zlib/lib CFLAGS=-I/zlib/include LIBS=-lz