xf86atomic: require CAS support in libatomic_ops
Since AO_compare_and_swap_full() is used by libdrm, AO_REQUIRE_CAS must be defined before including <atomic_ops.h> so that we are sure that CAS support will be provided. This is necessary to make sure that the AO_compare_and_swap_full() function will be provided on all architectures, including the ones that don't have built-in CAS support such as SPARCv8. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Seiderer <ps.report@gmx.net> Acked-by: Eric Engestrom <eric.engestrom@intel.com>main
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8c1185d22c
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8c51195039
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@ -54,6 +54,7 @@ typedef struct {
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#endif
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#if HAVE_LIB_ATOMIC_OPS
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#define AO_REQUIRE_CAS
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#include <atomic_ops.h>
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#define HAS_ATOMIC_OPS 1
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