diff --git a/src/auto/configure b/src/auto/configure
index 75f76a6301dc10f55e735e405f0822cc8f5289e6..bb079f0fc0bbc3c79c313ffb9398143625e30a06 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -4263,11 +4263,17 @@ else
 $as_echo "no" >&6; }
 fi
 
-ac_fn_c_check_header_mongrel "$LINENO" "AvailabilityMacros.h" "ac_cv_header_AvailabilityMacros_h" "$ac_includes_default"
+for ac_header in AvailabilityMacros.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "AvailabilityMacros.h" "ac_cv_header_AvailabilityMacros_h" "$ac_includes_default"
 if test "x$ac_cv_header_AvailabilityMacros_h" = x""yes; then :
-  HAVE_AVAILABILITYMACROS_H=1
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_AVAILABILITYMACROS_H 1
+_ACEOF
+
 fi
 
+done
 
 
 
diff --git a/src/configure.in b/src/configure.in
index ee70682b221ba2e014be44af0d24accefe49e562..df28a246b792906a639d5fd54d9fb2a6f1fd4c40 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -230,7 +230,7 @@ fi
 
 dnl Mac OS X 10.9+ no longer include AvailabilityMacros.h in Carbon
 dnl so we need to include it to have access to version macros.
-AC_CHECK_HEADER(AvailabilityMacros.h, HAVE_AVAILABILITYMACROS_H=1)
+AC_CHECK_HEADERS(AvailabilityMacros.h)
 
 AC_SUBST(OS_EXTRA_SRC)
 AC_SUBST(OS_EXTRA_OBJ)
diff --git a/src/version.c b/src/version.c
index 5ef4c228cca890326713f7b2235f64f676eb7629..229672a30b72fd10a67389790c24c5c0769687e1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    62,
 /**/
     61,
 /**/