make: Conditionally link to the OSX Security framework.
diff --git a/config.h.in b/config.h.in
index 4c049d2..7a832cd 100644
--- a/config.h.in
+++ b/config.h.in
@@ -33,8 +33,8 @@
 /* Define to 1 if you have the `memset' function. */
 #undef HAVE_MEMSET
 
-/* 1 if have OSX SecKeychain. */
-#undef HAVE_OSX_SECKEYCHAIN
+/* 1 if have the OSX framework. */
+#undef HAVE_OSX_SECURITY
 
 /* Have the SQLITE3 library */
 #undef HAVE_SQLITE3