[libstdc++] dg-require-atomic-builtins on ARM

[Sebastian Huber]

Hello,

I would like to run as many tests as possible on the arm-rtems target. 
Unfortunately about 100 tests use this:

// { dg-require-atomic-builtins "" }

Which uses a function check_v3_target_atomic_builtins in libstdc++.exp, 
which uses this program to determine if the atomic builtins are available:

    puts $f "#if __GCC_ATOMIC_BOOL_LOCK_FREE < 2"
    puts $f "#  error No atomic bool"
    puts $f "#endif"
    puts $f "#if __GCC_ATOMIC_INT_LOCK_FREE < 2"
    puts $f "#  error No atomic int"
    puts $f "#endif"

The default architecture version on arm-rtems is v4, so 
__GCC_ATOMIC_BOOL_LOCK_FREE == 1 and __GCC_ATOMIC_INT_LOCK_FREE == 1.

How do the other ARM testers tackle this issue? Would it be possible to 
add for example a "-march=armv7-a" option if the target selector 
contains "arm"?

--
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.hu...@embedded-brains.de
PGP     : Public key available on request.

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.