#if CMINUSMINUS
-#define ACQUIRE_LOCK(mutex) pthread_mutex_lock(mutex)
-#define RELEASE_LOCK(mutex) pthread_mutex_unlock(mutex)
+#define ACQUIRE_LOCK(mutex) foreign "C" pthread_mutex_lock(mutex)
+#define RELEASE_LOCK(mutex) foreign "C" pthread_mutex_unlock(mutex)
#define ASSERT_LOCK_HELD(mutex) /* nothing */
#else
#if CMINUSMINUS
-#define ACQUIRE_LOCK(mutex) EnterCriticalSection(mutex)
-#define RELEASE_LOCK(mutex) LeaveCriticalSection(mutex)
+/* We jump through a hoop here to get a CCall EnterCriticalSection
+ and LeaveCriticalSection, as that's what C-- wants. */
+
+#define ACQUIRE_LOCK(mutex) foreign "stdcall" EnterCriticalSection(mutex)
+#define RELEASE_LOCK(mutex) foreign "stdcall" LeaveCriticalSection(mutex)
#define ASSERT_LOCK_HELD(mutex) /* nothing */
#else