hello world under openwrt

 

1. Prepare the environment

cd ~/openwrt/bin/ar71xx
tar -xjvf OpenWrt-Toolchain-ar71xx-for-mips_r2-gcc-4.6-linaro_uClibc-0.9.33.2.tar.bz2 #Decompression toolkit
cd OpenWrt-Toolchain-ar71xx-for-mips_r2-gcc-4.6-linaro_uClibc-0.9.33.2/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2

 

2. Coding

Since C is cross-platform, the hello world encoding is consistent on any platform.

#include <stdio.h>

int main(int argc,char **argv)
{
        printf("hello world\n");
        return 0;
}

 

3. Compile

openwrt provides a special gcc tool, the command is no different.

./bin/mips-openwrt-linux-uclibc-gcc -o hello hello.c

 

 

 

  The generated hello world is based on MIPS architecture. There are so many brands of routers. It seems that if you want to develop a product, you have to compile them one by one.

 

4. Upload to the router

It is recommended to use the winSCP tool and select the scp protocol to transmit. Note that sftp cannot be selected because the router does not have a built-in sftp-server service.

 

 

 

5. Operation

 

 Bingo .....