首先，下载lrzsz-0.12.20.tar.gz源码包，并解压

然后，按如下步骤编译（只能动态链接，静态链接会出错）：

$ ./configure 

$ make CC=arm-none-linux-gnueabi-gcc

在源码的src/目录下会有lrz和lsz两个可执行文件

接下来，需要找到lrz和lsz所用到的动态库：

$ file src/lrz 
src/lrz: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.14, not stripped 
$ arm-none-linux-gnueabi-readelf -a src/lrz | grep Shared 
0x00000001 (NEEDED) Shared library: [libnsl.so.1] 
0x00000001 (NEEDED) Shared library: [libc.so.6] 
$ locate libnsl 
/lib/i386-linux-gnu/libnsl-2.15.so 
/lib/i386-linux-gnu/libnsl.so.1 
/lib/x86_64-linux-gnu/libnsl-2.15.so 
/lib/x86_64-linux-gnu/libnsl.so.1 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/armv4t/lib/libnsl-2.8.so 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/armv4t/lib/libnsl.so.1 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/armv4t/usr/lib/libnsl.a 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/armv4t/usr/lib/libnsl.so 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/lib/libnsl-2.8.so 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/lib/libnsl.so.1 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/thumb2/lib/libnsl-2.8.so 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/thumb2/lib/libnsl.so.1 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/thumb2/usr/lib/libnsl.a 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/thumb2/usr/lib/libnsl.so 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/libnsl.a 
/opt/armv6/codesourcery/arm-none-linux-gnueabi/libc/usr/lib/libnsl.so 
/usr/lib/x86_64-linux-gnu/libnsl.a 
/usr/lib/x86_64-linux-gnu/libnsl.so 

最后，把lrz、lsz和库文件一起拷贝到开发板上，验证OK！