From 817dff578f13ce97576c609ab141508b9dc782e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Thu, 28 Mar 2013 10:48:39 +0100
Subject: [PATCH] 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.
---
 configure | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 7f77b007e6..46635ce21f 100755
--- a/configure
+++ b/configure
@@ -1241,6 +1241,7 @@ HAVE_LIST="
     arpa_inet_h
     asm_mod_q
     asm_mod_y
+    atomic_cas_ptr
     atomics_native
     attribute_may_alias
     attribute_packed
@@ -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
 done
 
 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"