Utilities: add lost openssl dependency

CMakeLists.txt

@@ -121,6 +121,13 @@ if(NOT CMake_TEST_EXTERNAL_CMAKE)
       string(APPEND DEPS_BUNDLED " ${util}")
     endif()
   endforeach()
+
+  # OpenSSL is not included in the UTILITIES list,
+  # but it is a system dependency, if used
+  if(CMAKE_USE_OPENSSL)
+    string(APPEND DEPS_SYSTEM " OPENSSL")
+  endif()
+
   if(DEPS_SYSTEM)
     message(STATUS "Using system-installed:${DEPS_SYSTEM}")
   endif()

Utilities/cmThirdParty.h.in

@@ -16,3 +16,6 @@
 #cmakedefine CMAKE_USE_SYSTEM_LIBRHASH
 #cmakedefine CMAKE_USE_SYSTEM_LIBUV
 #cmakedefine CMAKE_USE_SYSTEM_ZSTD
+
+/* Whether CMake is using OpenSSL library.  */
+#cmakedefine CMAKE_USE_OPENSSL