I am running Linux 2.6.20.11 on AT91SAM9260-EK evaluation kit and I am trying to build “Hello world” program with armgcc pre-built compiler version 4.1.1.

arm-elf-gcc -mcpu=arm9 -o hello hello.c

When I run the executable on the evaluation board I get this error:

# ./hello
Illegal instruction

If I build the same program with the same arm-elf-gcc version compiler under Linux, all works fine.

Does anyone have an explanation why the Cygwin cross compiler can’t generate good executable? I tried various compiler options and cpu targets but I always get the same error.

Thanks and regards,
Vlad

I'm having a similar but a bit different problem:

I'm testing an AT91SAM9G45-EKES board.
On my x86_64 machine i've compiled the gnu toolchain for cross compiling, and seems to work fine, because i've created working kernel modules, running fine in the board.

Now i'm trying to compile a simple program for reading data from a device, which basically uses fopen/fread/fclose functions.



There is some problem related to fpu, which is really strange, considering i'm forcing it to use the soft one for both compiling and linking. If i try with -mfpu=fpa it compiles, but i get an "Illegal instruction" at runtime.

Any idea?

Regards