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authorSimon McVittie <simon.mcvittie@collabora.co.uk>2007-10-11 09:57:48 +0100
committerSimon McVittie <simon.mcvittie@collabora.co.uk>2007-10-11 09:57:48 +0100
commit176738f0f0f57de3f4c8553a411b26b171fdd117 (patch)
treeed98d6dd258fc0e65ab2bdff2a335b91910ae330 /dbus
parent077fb290c57ee937330b22b2ae794fc9967d4722 (diff)
Fix detection of i486 atomic ops.
Previously, the attempts to determine support at compile-time on Darwin were causing the i486 atomic ops to be used on *all* i386 or x86-64 GCC builds (AH_VERBATIM can't be conditionalized like we were trying to).
Diffstat (limited to 'dbus')
-rw-r--r--dbus/dbus-sysdeps-unix.c6
-rw-r--r--dbus/dbus-sysdeps.h10
2 files changed, 13 insertions, 3 deletions
diff --git a/dbus/dbus-sysdeps-unix.c b/dbus/dbus-sysdeps-unix.c
index 0ab5e730..2ce7427b 100644
--- a/dbus/dbus-sysdeps-unix.c
+++ b/dbus/dbus-sysdeps-unix.c
@@ -1741,7 +1741,7 @@ _dbus_parse_uid (const DBusString *uid_str,
_DBUS_DEFINE_GLOBAL_LOCK (atomic);
-#ifdef DBUS_USE_ATOMIC_INT_486
+#if DBUS_USE_ATOMIC_INT_486_COND
/* Taken from CVS version 1.7 of glibc's sysdeps/i386/i486/atomicity.h */
/* Since the asm stuff here is gcc-specific we go ahead and use "inline" also */
static inline dbus_int32_t
@@ -1768,7 +1768,7 @@ atomic_exchange_and_add (DBusAtomic *atomic,
dbus_int32_t
_dbus_atomic_inc (DBusAtomic *atomic)
{
-#ifdef DBUS_USE_ATOMIC_INT_486
+#if DBUS_USE_ATOMIC_INT_486_COND
return atomic_exchange_and_add (atomic, 1);
#else
dbus_int32_t res;
@@ -1791,7 +1791,7 @@ _dbus_atomic_inc (DBusAtomic *atomic)
dbus_int32_t
_dbus_atomic_dec (DBusAtomic *atomic)
{
-#ifdef DBUS_USE_ATOMIC_INT_486
+#if DBUS_USE_ATOMIC_INT_486_COND
return atomic_exchange_and_add (atomic, -1);
#else
dbus_int32_t res;
diff --git a/dbus/dbus-sysdeps.h b/dbus/dbus-sysdeps.h
index eadfb433..1a52e7fb 100644
--- a/dbus/dbus-sysdeps.h
+++ b/dbus/dbus-sysdeps.h
@@ -199,6 +199,16 @@ struct DBusAtomic
#endif
};
+/* The value we get from autofoo is in the form of a cpp expression;
+ * convert that to a conventional defined/undef switch. (We can't get
+ * the conventional defined/undef because of multiarch builds only running
+ * ./configure once, on Darwin.) */
+#if DBUS_HAVE_ATOMIC_INT_COND
+# define DBUS_HAVE_ATOMIC_INT 1
+#else
+# undef DBUS_HAVE_ATOMIC_INT
+#endif
+
dbus_int32_t _dbus_atomic_inc (DBusAtomic *atomic);
dbus_int32_t _dbus_atomic_dec (DBusAtomic *atomic);