1) Create your hello world program:

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Using c Syntax Highlighting

1. #include
2.  
3. int main(int argc, char** argv) {
4.    printf("Hello World - says anddev.orgn");
5.    return 0;
6. }

Parsed in 0.001 seconds, using GeSHi 1.0.8.4

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.