(OK) 交叉编译hello.c for android (--sysroot)，不使用Android.mk和ndk-build

# export PATH=$PATH:/opt/android-on-linux/android-ndk-r8e/toolchains/arm-linux-androideabi-4.7/prebuilt/linux-x86_64/bin/

# arm-linux-androideabi-gcc --sysroot=/opt/android-on-linux/android-ndk-r8e/platforms/android-14/arch-arm/ hello.c -o hello

# adb push hello /data/

# adb shell

执行命令： 
chmod 700 /data/hello
/data/hello

+++++++++++++++++++++++++++++++++

# adb push hello /data/data/www/cgi-bin

宿主机浏览器：
http://192.168.0.101:8000/cgi-bin/hello

如果成功的话, 可以看到浏览器上 Hello world!
++++++++++++++++++++++++++++++++++++++++++++++++
[root@localhost 桌面]# gedit readdisk.c


点击(此处)折叠或打开

  1. #include <stdio.h>
  2. #include <fcntl.h>

  4. int main()
  5. {
  6.     unsigned char buf[512];
  7.     int fd = open("/dev/blk/mmcblk1", O_RDWR);

  9.     printf("文件描述符%d", fd);
  10.     if (fd < 0) {        // printf("%d\n",errno);
  11.         return 0;
  12.     }
  13.     int num;
  14.     num = read(fd, buf, 512);
  15.     printf("读取字数%d", num);
  16.     printf("\n");
  17.     int i, j;
  18.     for (i = 0; i < 32; i++) {
  19.         for (j = 0; j < 16; j++)
  20.             printf("%02X ", buf[i * 16 + j]);
  21.         printf("\n");
  22.     }
  23.     printf("\n");
  24.     close(fd);
  25.     return 0;
  26. }

[root@localhost 桌面]# arm-linux-androideabi-gcc --sysroot=/opt/android-on-linux/android-ndk-r8e/platforms/android-14/arch-arm/ readdisk.c -o readdisk

++++++++++++++++++++++++++++++++++++
root@kltexx:/data # ./readdisk                                                                                                        
error: only position independent executables (PIE) are supported.

[root@localhost 桌面]# arm-linux-androideabi-gcc --sysroot=/opt/android-on-linux/android-ndk-r8e/platforms/android-14/arch-arm/ -pie -fPIE readdisk.c -o readdisk



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posted @ 2016-02-01 00:00  张同光  阅读(101)  评论(0)  编辑  收藏  举报