From 709a49fcabb8a1088ef70456c81b553167ebc8e7 Mon Sep 17 00:00:00 2001
From: David Allsopp <david.allsopp@metastack.com>
Date: Fri, 10 Jun 2022 11:33:31 +0100
Subject: [PATCH] Only install modules for 4.14+

Use the Standard Library modules for OCaml 4.x, but override 4.14's to
eliminate the deprecation warning.
---
 CHANGES.md |  3 ++-
 src/dune   | 12 +++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/CHANGES.md b/CHANGES.md
index 4cba8f2..230a2dc 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,7 +2,8 @@
 
 - Update licensing metadata.
 - Update dune files to 2.7 to autogenerate opam files correctly (#2)
-- Lower OCaml version to 4.02.3
+- Lower OCaml version to 4.02.3 (#3)
+- Install empty library for OCaml < 4.14 (#5)
 
 # Release 5.0  (2021-06-29)
 
diff --git a/src/dune b/src/dune
index 1a23450..e666e35 100644
--- a/src/dune
+++ b/src/dune
@@ -1,5 +1,15 @@
+(* -*- tuareg -*- *)
+
+open Jbuild_plugin.V1
+
+let modules =
+  let version = Scanf.sscanf ocaml_version "%u.%u" (fun a b -> (a, b)) in
+  if version >= (4, 14) then ":standard" else ""
+
+let () = Printf.ksprintf send {|
 (library
  (name camlp_streams)
  (public_name camlp-streams)
+ (modules %s)
  (wrapped false)
- (flags :standard -w -9))
+ (flags :standard -w -9))|} modules