updated for version 7.4.061
Problem: Availability macros configure check in wrong place.
Solution: Also check when not using Darwin. Remove version check.
diff --git a/src/os_unix.c b/src/os_unix.c
index 80459c9..5eb0936 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -804,9 +804,7 @@
* completely full.
*/
-#if defined(HAVE_AVAILABILITYMACROS_H) \
- && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) \
- && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1090)
+#if defined(HAVE_AVAILABILITYMACROS_H)
# include <AvailabilityMacros.h>
#endif