atomic variables on Maemo?
 

Hi,

I'd like to use gcc intrinsics for atomic memory access (__sync_lock_test_and_set etc.) in my application, but under scratchbox, a program with them doesn't link. Googling shows it's a known gcc problem, which

a) may be solved by using the correct -march switch - which would be the right value for Maemo? or

b) may not be solvable on ARM, since it (generally - not always) doesn't support the necessary atomic instructions.

So, did anybody need atomic variables on Maemo? How did you go about getting them?

Re: atomic variables on Maemo?
 

The -march switch would be armv7-a (with the A standing for the A in Cortex-A8.

Re: atomic variables on Maemo?
 

Still the same problem:

undefined reference to `__sync_lock_test_and_set_4'

I guess the intrinsics really aren't supported...