Android Open Handset Developers Community

1) Create your hello world program:

#include

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

}

2) Compile with an arm cross-compiler toolchain. I used a toolchain I
built with gentoo’s crossdev tool, but there are lots out there.
Assuming your c file is hi.c and your cross compiler is called armv6-
vfp-linux-gnueabi-gcc, you can compile using:

armv6-vfp-linux-gnueabi-gcc hi.c -o hi -static

Note the -static. I’ve not figured out the version of libc etc or the
ABI used yet, so for now, link applications statically.

3) Copy to a running emulator:
adb push hi /system/sbin/hi

4) Run it! From the emulator console:
cd /system/sbin
./hi

5) Smile as you see “hello world” printed on the console.