[FFmpeg-cvslog] configure: Check for the atomic. h functions used in the suncc atomics header

Martin Storsjö git at videolan.org
Wed Apr 3 15:13:21 CEST 2013

ffmpeg | branch: master | Martin Storsjö <martin at martin.st> | Thu Mar 28 10:48:39 2013 +0100| [817dff578f13ce97576c609ab141508b9dc782e9] | committer: Anton Khirnov

configure: Check for the atomic.h functions used in the suncc atomics header

The "suncc" atomics implementation uses a suncc specific memory
barrier, but also relies on a few atomic functions from atomic.h,
that are not suncc specific but specific to solaris. This made
the current implementation fail on suncc on linux.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=817dff578f13ce97576c609ab141508b9dc782e9

 configure |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 7f77b00..46635ce 100755
--- a/configure
+++ b/configure
@@ -1241,6 +1241,7 @@ HAVE_LIST="
+    atomic_cas_ptr
@@ -3467,6 +3468,7 @@ check_func  strtok_r
 check_func  sched_getaffinity
 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
+check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
 check_func  sysconf
 check_func  sysctl
@@ -3537,7 +3539,7 @@ for thread in $THREADS_LIST; do
 enabled sync_val_compare_and_swap && enable atomics_gcc
-enabled machine_rw_barrier && enable atomics_suncc
+enabled machine_rw_barrier && enabled atomic_cas_ptr && enable atomics_suncc
 enabled MemoryBarrier && enable atomics_win32
 check_lib math.h sin -lm && LIBM="-lm"

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