在android模拟器运行arm 移植的 c程序

• first : download arm cross compliers

• next : modify env

  [dengwei@localhost ~]$ vi ~/.bashrc 

  export PATH="/home/dengwei/arm-marvell-linux-gnueabi/bin:$PATH"
•  third: code here
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  int main(int argc, char** argv) {
     printf("hello world\n");
    
     FILE *pfd = fopen("/mnt/sdcard/345","a+");
      fwrite("abcedfg", sizeof(char), strlen("abcdefg"),pfd);
      fclose(pfd);
     return 0;

  } 

   

• fourth: compile: arm-marvel-linux-gnueabi-gcc -static hi.c -o hi123

• fifth: usage of adb

  
  adb push ~/hi123 /data
  adb shell # /data/hi123
  hello world
  # pwd
  /mnt/sdcard
  # cat 345
  abcedfg#

if you intend to use cpp file , just : mv hi123.c hi.cpp ,and use: arm-marvell-linux-gnueabi-g++ -static hi.cpp -o hi1234
if you meet "Read-only file system " error, pls do the following:
mount -o remount,rw /
when I put the executable file to real mobile phone , excuted it by console by emulator
#/sdcard/hi1234,I encount a error: Permission denied. It works now after I #chmod u+x /sdcard/hi1234 # mv /sdcard/hi1234 /system/sbin/