diff --git a/src/auto/configure b/src/auto/configure
index 75f76a6..bb079f0 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -4263,11 +4263,17 @@
 $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 ee70682..df28a24 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -230,7 +230,7 @@
 
 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 5ef4c22..229672a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    62,
+/**/
     61,
 /**/
     60,